Posts belonging to Category hydrogene electric car



Ultrafast Flexible Electronic Memory

Engineering experts from the University of Exeter (UK) have developed innovative new memory using a hybrid of graphene oxide and titanium oxide. Their devices are low cost and eco-friendly to produce, are also perfectly suited for use in flexible electronic devices such as ‘bendablemobile phone, computer and television screens, and even ‘intelligentclothing.
. Crucially, these devices may also have the potential to offer a cheaper and more adaptable alternative to ‘flash memory’, which is currently used in many common devices such as memory cards, graphics cards and USB computer drives. The research team insist that these innovative new devices have the potential to revolutionise not only how data is stored, but also take flexible electronics to a new age in terms of speed, efficiency and power.

bendable mobile phone

Using graphene oxide to produce memory devices has been reported before, but they were typically very large, slow, and aimed at the ‘cheap and cheerful’ end of the electronics goods market”, said Professor David Wright, an Electronic Engineering expert from the University of Exeter.

Our hybrid graphene oxide-titanium oxide memory is, in contrast, just 50 nanometres long and 8 nanometres thick and can be written to and read from in less than five nanoseconds – with one nanometre being one billionth of a metre and one nanosecond a billionth of a second.”

The research is published in the scientific journal ACS Nano.

Source: http://www.exeter.ac.uk/

Clean Renewable Source Of Hydrogen Fuel For Electric Car

Rice University scientists have created an efficient, simple-to-manufacture oxygen-evolution catalyst that pairs well with semiconductors for solar water splitting, the conversion of solar energy to chemical energy in the form of hydrogen and oxygen.

anode RiceA photo shows an array of titanium dioxide nanorods with an even coating of an iron, manganese and phosphorus catalyst. The combination developed by scientists at Rice University and the University of Houston is a highly efficient photoanode for artificial photosynthesis. Click on the image for a larger version

The lab of Kenton Whitmire, a Rice professor of chemistry, teamed up with researchers at the University of Houston and discovered that growing a layer of an active catalyst directly on the surface of a light-absorbing nanorod array produced an artificial photosynthesis material that could split water at the full theoretical potential of the light-absorbing semiconductor with sunlight. An oxygen-evolution  catalyst splits water into hydrogen and oxygen. Finding a clean renewable source of hydrogen fuel is the focus of extensive research, but the technology has not yet been commercialized.

The Rice team came up with a way to combine three of the most abundant metalsiron, manganese and phosphorus — into a precursor that can be deposited directly onto any substrate without damaging it. To demonstrate the material, the lab placed the precursor into its custom chemical vapor deposition (CVD) furnace and used it to coat an array of light-absorbing, semiconducting titanium dioxide nanorods. The combined material, called a photoanode, showed excellent stability while reaching a current density of 10 milliamps per square centimeter, the researchers reported.

The results appear in two new studies. The first, on the creation of the films, appears in Chemistry: A European Journal. The second, which details the creation of photoanodes, appears in ACS Nano.

Source: http://news.rice.edu/

Hydrogen Electric Car: New Storage System

Lawrence Livermore scientists have collaborated with an interdisciplinary team of researchers, including colleagues from Sandia National Laboratories, to develop an efficient hydrogen storage system that could be a boon for hydrogen-powered vehicles.

hydrogen lithiumHydrogenation forms a mixture of lithium amide and hydride (light blue) as an outer shell around a lithium nitride particle (dark blue) nanoconfined in carbon

Hydrogen is an excellent energy carrier, but the development of lightweight solid-state materials for compact, low-pressure storage is a huge challenge. Complex metal hydrides are a promising class of hydrogen storage materials, but their viability is usually limited by slow hydrogen uptake and release. Nanoconfinementinfiltrating the metal hydride within a matrix of another material such as carbon — can, in certain instances, help make this process faster by shortening diffusion pathways for hydrogen or by changing the thermodynamic stability of the material.

However, the Livermore-Sandia team, in conjunction with collaborators from Mahidol University in Thailand and the National Institute of Standards and Technology, showed that nanoconfinement can have another, potentially more important consequence. They found that the presence of internal “nano-interfaces” within nanoconfined hydrides can alter which phases appear when the material is cycled.

The key is to get rid of the undesirable intermediate phases, which slow down the material’s performance as they are formed or consumed. If you can do that, then the storage capacity kinetics dramatically improve and the thermodynamic requirements to achieve full recharge become far more reasonable,” said Brandon Wood, an LLNL materials scientist and lead author of the paper. “In this material, the nano-interfaces do just that, as long as the nanoconfined particles are small enough. It’s really a new paradigm for hydrogen storage, since it means that the reactions can be changed by engineering internal microstructures.”

The research is reported  in the journal Advanced Materials Interfaces

Source: https://www.llnl.gov/

Car Pollution: Nanoparticles Travel Directly From The Nose To The Brain

The closer a person lives to a source of pollution, like a traffic dense highway, the more likely they are to develop Alzheimer’s or dementia, according to a study by the University of Southern California (USC) that has linked a close connection to pollution and the diseases. In a mobile lab, located just off of one of Los Angeles’ busiest freeways, USC scientists used a state-of-the-art pollution particle collector capable of gathering nano-sized particulate matter.

car pollution

CLICK ON THE IMAGE TO ENJOY THE VIDEO

We have shown that, as you would expect, the closer you get to the sources of these particles in our case the freeways, the higher the concentrations. So there is an exponential decay with distance. That means basically that, the concentration of where we are right now and if we were, let’s just say 20 or 10 or 50 yards from the freeway, those levels would be probably 10 times higher than where we are right now,” says Costas Sioutas, USC Professor of Environmental Engineering.

That means proximity to high concentrations of fossil fuel pollution, like a congested freeway, could be hazardous. Particulate matter roughly 30 times thinner than the width of a human hair, called PM2.5, is inhaled and can travel directly through the nose into the brain. Once there, the particles cause inflammatory responses and can result in the buildup of a type of plaque, which is thought to further the progression of Alzheimer’s. “Our study brought in this new evidence and I would say probably so far the most convincing evidence that the particle may increase the risk of dementia. This is really a public health problem. And I think the policy makers need to be aware of that, the public health risk associated with high level of PM2.5,” explains Jiu-Chiuan Chen, Associate Professor of Preventive Medicine.

USC researchers analyzed the data of more than 3,500 women who had the APOE4 gene, the major known risk-factor gene for Alzheimer’s disease. It showed that, over the course of a decade, the women who lived in a location with high levels of the PM2.5 pollution were 92 percent more likely to develop dementia.

Source: https://news.usc.edu/
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http://www.reuters.com/

The Rise Of The Hydrogen Electric Car

Right now, if you want an alternative-fuel vehicle, you have to pick from offerings that either require gasoline or an electrical outlet. The gas-electric hybrid and the battery-powered car — your Toyota Priuses, Chevy Volts, and Teslas — are staples in this space. There are drawbacks for drivers of both types. You still have to buy gas for your hybrid and you have to plug in your Tesla — sometimes under less than favorable conditions — lest you be stranded someplace far away from a suitable plug. Beyond that, automakers have been out to find the next viable energy source. Plug-in vehicles are more or less proven to be the answer, but Toyota and a handful of other carmakers are investigating hydrogen.

toyota-mirai

That’s where the Toyota Mirai comes in. The Mirai‘s interior center stack has all the technology you would expect from a car that retails for $57,500, including navigation, Bluetooth, and USB connectivity. It’s all accessible by touch screens and robust digital displays.
A fill-up on hydrogen costs just about as much as regular gasoline in San Francisco. The Mirai gets an estimated 67 MPGe (67 Miles per gallon gasoline equivalent = 28,5 kilometers per liter)), according to Toyota.
It’s an ambitious project for Toyota because the fueling infrastructure for this car is minimal. There are only 33 public hydrogen-filling stations in the US, according to the US Department of Energy. Twenty-six of those stations are in California, and there’s one each in Connecticut, Massachusetts, and South Carolina.

If you include public and private hydrogen stations, then the total climbs to 58 — nationwide. Compare that to the more than 15,100 public electric-charging stations and the 168,000 retail gas stations in the US, and you can see the obvious drawback of hydrogen-powered cars. Despite this, the Mirai is an interesting project, and you must keep in mind that Japan at the Government level seems to bet on a massively hydrogen powered economy in the near future (fuel, heating, replacement of nuclear energy, trains, electric vehicles, etc…).

Source: http://www.businessinsider.com

How To Store Hydrogen Fuel In Electric Cars

Layers of graphene separated by nanotube pillars of boron nitride may be a suitable material to store hydrogen fuel in cars, according to Rice University scientists. The Department of Energy has set benchmarks for storage materials that would make hydrogen a practical fuel for light-duty vehicles. The Rice lab of materials scientist Rouzbeh Shahsavari determined in a new computational study that pillared boron nitride and graphene could be a candidate.

hydrogenSimulations by Rice scientists show that pillared graphene boron nitride may be a suitable storage medium for hydrogen-powered vehicles. Above, the pink (boron) and blue (nitrogen) pillars serve as spacers for carbon graphene sheets (grey). The researchers showed the material worked best when doped with oxygen atoms (red), which enhanced its ability to adsorb and desorb hydrogen (white).

 

Just as pillars in a building make space between floors for people, pillars in boron nitride graphene make space for hydrogen atoms. The challenge is to make them enter and stay in sufficient numbers and exit upon demand.Shahsavari’s lab had already determined through computer models how tough and resilient pillared graphene structures would be, and later worked boron nitride nanotubes into the mix to model a unique three-dimensional architecture. (Samples of boron nitride nanotubes seamlessly bonded to graphene have been made.)

In their latest molecular dynamics simulations, the researchers found that either pillared graphene or pillared boron nitride graphene would offer abundant surface area (about 2,547 square meters per gram) with good recyclable properties under ambient conditions. Their models showed adding oxygen or lithium to the materials would make them even better at binding hydrogen. They focused the simulations on four variants: pillared structures of boron nitride or pillared boron nitride graphene doped with either oxygen or lithium. At room temperature and in ambient pressure, oxygen-doped boron nitride graphene proved the best, holding 11.6 percent of its weight in hydrogen (its gravimetric capacity) and about 60 grams per liter (its volumetric capacity); it easily beat competing technologies like porous boron nitride, metal oxide frameworks and carbon nanotubes.

The study by Shahsavari and Farzaneh Shayeganfar appears in the American Chemical Society journal Langmuir.

Source: http://news.rice.edu/

Solar-powered Wireless Charging Station For Electric Bikes

Members of the Delft University of Technology (TU Delft) in Netherlands have presented the first solar-powered wireless charging station for electric bikes.

electric-station-for-electric-bikes

This is a major step forward in terms of sustainable transport and accelerating the energy transition because the combination of solar energy, wireless charging and electric bikes is unique. In this charging station, we charge the DC battery in the bike with the solar energy from the eight solar panels via the DC supply. The charging station can also store 10 kWh of solar energy in the batteries, enabling it to function independently“, sayd  Pavol Bauer, who leads the Direct Current (DC) Systems, Energy Conversion & Storage group at the University.

The charging station is ready for immediate use: it can accommodate four electric bikesan electric scooter and a research bike that are charged wirelessly. The charging station also serves as a living lab, a testbed for further research. In the last two years, ten students have graduated on the strength of their work on the project. For example, a student of Electrical Engineering, Mathematics and Computer Science designed a DC system and created a system to enable the bike to be charged wirelessly, another calculated and determined the output and position of the solar panels, and an Industrial Design Engineering student was responsible for designing the charging station.

The electric research bike is equipped with a dual stand and a small coil. At the charging station, the bike can be parked on the stand on a magnetic tile. The bike is charged directly via the coil. The user can monitor the charging status on a built-in screen on the charging station or on his or her mobile phone. Wireless charging takes around the same time as the ‘conventional‘ charging of electric bikes.

It is anticipated that the eight panels will generate sufficient energy to power the electric bikes and the scooter in winter. In summer, any excess power will be fed to the electricity grid. Pavol Bauer’s group now plans to work on the further development of wireless charging for various bikes and scooters. The ultimate aim is for the charging station to consist solely of several tiles used as a solar panel, which can be cycled on, known as solar roads. Integrating solar cells and the wireless charging system makes an expensive system unnecessary.

Source: http://www.tudelft.nl/

Electric Train: Bye Bye Diesel, Hello Pure Air !

The French company Alstom has presented its zero-emission train at InnoTrans, the railway industry’s largest trade fair (Berlin September 2016). Despite numerous electrification projects in several countries, a significant part of Europe’s rail network will remain non-electrified in the long term. In many countries, the number of diesel trains in circulation is still high – more than 4,000 cars in Germany, for instance.

Coradia iLint from Alstom is a new CO2-emission-free regional train and alternative to diesel power. It is powered by a hydrogen fuel cell, its only emission being steam and condensed water while operating with a low level of noise. Alstom is among the first railway manufacturers in the world to develop a passenger train based on such a technology. To make the deployment of the Coradia iLint as simple as possible for operators, Alstom offers a complete package, consisting of the train and maintenance, as well as also the whole hydrogen infrastructure out of one hand thanks to help from partners.

Alstom expects to sign a firm order for a production build of hydrogen fuel cell powered multiple-units by the end of the year, Coradia LINT Product Manager Stefan Schrank told Railway Gazette on September 20.

The expected initial firm order would cover units for service in Nordrhein-Westfalen. Alstom has already signed letters of intent with four German Länder covering a total of 60 trainsets, and anticipates firm orders for between 40 and 70 units by the end of 2017. Schrank was speaking at InnoTrans following the unveiling of the first of two pre-production iLINT fuel cell multiple-units which are to be tested on regional services around Hannover under an agreement with the Land of Niedersachsen. The two pre-production units are owned by Alstom, which plans to conduct testing throughout 2017, including at the Velim test circuit. Type approval from Germany’s Federal Railway Office is expected by the end of 2017, enabling the start of trial passenger running around Hannover in late 2017 or early 2018.

alstom-hydrogen-electric-train

The fuel cell trainsets have the same bodies, bogies and drive equipment as the conventional diesels, and the two units will directly replace two diesel units to provide a real-world comparison of performance.

The hydrogen tanks and fuel cells are mounted on the car roofs, with the tanks carrying 94 kg of hydrogen per car, enough for around one day or 700 km of operation. The fuel cells were supplied by Hydrogenics, after Alstom took a decision to partner with an experienced specialist rather than develop its own technology. The fuel cells are linked to lithium ion batteries from Akasol.

Alstom anticipates that operating costs will be comparable to diesel units. The environmental footprint of the trainsets will depend on how the hydrogen is produced; under Germany’s current electricity generating mix and electrolysis produces an unfavourable comparison to diesel, but the generating mix predicted for 2020 would make the hydrogen greener, Schrank said.

He sees a bright future for fuel cells, which he believes have now reached a comparable level of development to diesel engines 100 years ago.

Source: http://www.railwaygazette.com/

Electric Bus Service Without Driver Open Next Week

A self shuttle service, electric and driverless but with passengers, was launched Friday in Lyon (France)  to be tested for a year in the new district of Confluence, “a world first” according to officials of the operation. Two “Armashuttles of the French company Navya, a prototype was tested in 2013 on the hill of the Croix-Rousse, must serve a 10-minute rotations five stops on route commissioning between the Hotel de Region and the tip of the peninsula of the city, Saône side.

Long of 1.3 kilometers and baptized Navly, the service will be open this weekend from 10:00 then at 17:00 from Monday to Friday, 7:30 a.m. to 7:00 p.m., from September 5. Fifteen people in total can be carried in each vehicle. Developed by Keolis, the network operator of the Lyon public transport (TCL) and Navya, a specialist in innovative mobility solutions, the project “meets the challenges of serving the last kilometer,” said Pascal Jacquesson, CEO of Keolis Lyon. Supported by the Metropolis of Lyon and approved in July by the Ministry of Ecology, the “fine service” must supplement the local tram and bus provides TCL, attention including “employees of large companies and administrative and cultural institutions of the district,” he said.

Driverless yellow bus

This period of one year is intended to test everything from technology to economic model” to be determined, for its part, Christophe Sapet, Chairman of Navya headquartered in Villeurbanne. Limited at a speed of 20 km / h for the service, the Arma shuttle is a jewel of technology to 200,000 euros each, equipped with guiding cameras in stereovision, laser sensors, GPS and a battery life of six to eight hours.

Already tested in many other cities of the Hexagon, but without passengers, Navya shuttles also run abroad as in Sion, Switzerland. other electric minibus without drivers have already been tested for several months in La Rochelle (Charente-Maritime), as part of European experience.

Source: http://archyworldys.com

Electric Car: Nanofiber Electrodes Boost Fuel Cells By 30 Percent

At the same time Honda and Toyota are introducing fuel cell cars to the U.S. market, a team of researchers from Vanderbilt University, Nissan North America and Georgia Institute of Technology have teamed up to create a new technology designed to give fuel cells more oomph. The project is part of a $13 million Department of Energy program to advance fuel cell performance and durability and hydrogen storage technologies announced last month.

hydrogen fuel cells

Fuel cells were invented back in 1839 but their first real world application wasn’t until the 1960’s when NASA used them to power the Apollo spacecraft. Fuel cells need fuel and air to run, like a gasoline engine, but they produce electricity, like a battery. In hydrogen/air fuel cells, hydrogen flows into one side of the device. Air is pumped into the other side. At the anode, the hydrogen is oxidized into protons. The protons flow to the cathode where the air is channeled, reducing the oxygen to form water. Special catalysts in the anode and cathode allow these reactions to occur spontaneously, producing electricity in the process. Fuel cells convert fuel to electricity with efficiencies ranging from 40 percent to 60 percent. They have no moving parts so they are very quiet. With the only waste product being water, they are environmentally friendly.The $2.5 million collaboration is based on a new nanofiber mat technology developed by Peter Pintauro, Professor of Chemical Engineering at Vanderbilt, that replaces the conventional electrodes used in fuel cells. The nanofiber electrodes boost the power output of fuel cells by 30 percent while being less expensive and more durable than conventional catalyst layers. The technology has been patented by Vanderbilt and licensed to Merck KGaA in Germany, which is working with major auto manufacturers in applying it to the next generation of automotive fuel cells.

Conventional fuel cells use thin sheets of catalyst particles mixed with a polymer binder for the electrodes. The catalyst is typically platinum on carbon powder. The Vanderbilt approach replaces these solid sheets with mats made from a tangle of polymer fibers that are each a fraction of the thickness of a human hair made by a process called electrospinning. Particles of catalyst are bonded to the fibers. The very small diameter of the fibers means that there is a larger surface area of catalyst available for hydrogen and oxygen gas reactions during fuel cell operation. The pores between fibers in the mat electrode also facilitate the removal of the waste water. The unique fiber electrode structure results in higher fuel cell power, with less expensive platinum.
Source: http://news.vanderbilt.edu/

The Rise Of The Electric Trucks

Nikola Motor, a company based in Salt Lake City, has announced that its  advanced R&D team has achieved 100% zero emissions on the Nikola One commercial class 8 truck. Working electric truck prototype will be unveiled on December 2 in Salt Lake City.

Nikola-One-Electric-Semi-Truck-Concept

While other companies have recently announced battery-powered semi-trucks, those trucks are restricted to a range of only a couple hundred miles and four to eight hours of charging between stops,” said Founder and CEO Trevor Milton. “Nikola has engineered the holy grail of the trucking industry. We are not aware of any zero emission truck in the world that can haul 80,000 pounds more than 1,000 miles and do it without stopping. The Nikola One requires only 15 minutes of downtime before heading out for the next 1,000 miles.” “Imagine what this could do for the air in every city in America. We knew our emissions would be low, but to have the ability to achieve true zero emissions is revolutionary for the worldwide trucking industry,” Milton added.

When asked why no one had accomplished this before, Milton said, “It requires a specific zero emission refinement process of fuel and gutsy engineering and product execution. A traditional manufacturer would have to partner with an oil company, environmental group, electric vehicle engineering firm, a broad spectrum of suppliers and a world-class consulting firm to have figured it out. At Nikola, all of our development and talent is under one roof”.

In addition to the zero emission semi-truck, Nikola has initiated the first steps to manufacture emission-free power plants that range from 50 kilowatts to 50 megawatts, cutting power generation costs in half. Nikola believes this technology not only has the ability to transform America’s roadways, but how the world will migrate towards zero-emission energy going forward.

Two months ago, Nikola announced more than $2.3 billion in reservations, totaling more than 7,000 truck reservations with deposits. The Nikola One truck leasing program costs $4000 to $5000 per month, depending on which truck configuration and options the customer chooses. The first million miles of fuel under the lease is included with each truck sale, potentially offsetting 100% of the monthly cost. An average diesel burns approximately $400,000 in fuel and can rack up over $100,000 in maintenance costs over 1,000,000 miles. These costs are eliminated with the Nikola One lease. Now companies can have a zero emission truck with a return on their investment in the first month.

Source: https://www.trucks.com/
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https://nikolamotor.com/

 

3D Nano-structured Porous Electrodes Boost Batteries

Battery-life is increasingly the sticking point of technological progress.The latest electric vehicles can practically drive themselve, but only for so long. Outback energy woes look like they could be solved by solar and home energy storage, if the available batteries can be improved. And what about the Pokemon GO players, cutting hunting trips short due to the battery-sapping requirements of the app?

The solution could come from Sunshine Coast nanotechnology company Nano Nouvelle, which is developing a three-dimensional, nano-structured, porous electrode that it says will help overcome the limitations of today’s batteries.The company announced today that its ‘Nanodenanomaterials were being tested and trialled by two unnamed US specialist battery manufacturers.

stephanie-moroz

CEO Stephanie Moroz said she hoped the profile of the trials would lead to wider adoption.“As Tesla proved with its Roadster EV sportscar, this sort of low-volume, high-margin starting point can provide a high visibility platform to demonstrate the benefits of innovative technology, which can accelerate its adoption by mass market manufacturers.”

Nano Nouvelle’s core technology, the Nanode uses tin as the electrode material, which has a much higher energy density than the current graphite technology. However, until now tin’s commercial use had been limited due to its tendency to swell during charging and subsequently lose energy.

This issue is overcome by the Nanode’s structure, made up of thin films of active material spread over a 3D and porous network of fibres, rather than stacked on a flat copper foil.

This enables the electrode structure to deal with the volume expansion of the tin while retaining dimensional stability at the electrode level. The result is batteries that can store the same amount of energy in a smaller volume, compared to commercial lithium ion batteries.

Moroz said she believed the nanotechnology could be easily incorporated into the existing battery manufacturing process. Moroz said she believed the nanotechnology could be easily incorporated into the existing battery manufacturing process.

We’re looking to make it plug and play for battery manufacturers,” she said.

Source: http://www.cio.com.au/