a development that could mean faster charging time and longer battery life in electric vehicles and portable electronics.
while supercapacitors have the potential to charge faster and last longer than conventional batteries, they also need to be much larger in size
and mass in order to hold the same electric energy as batteries. Thus, many scientists are working to develop green, lightweight, low-cost supercapacitors with high performance.
Conventional batteries on the other hand, are the opposite. They have high energy density or can store a lot of electric energy, but can take hours to charge and discharge.
Supercapacitors are a bridge between conventional capacitors and batteries, combining the advantageous properties of high power, high energy density and low internal resistance,
which may replace batteries as a fast, reliable and potentially safer power source for electric and portable electronic devices in future, said Singh.
have longer battery life and generate less heat than existing mobile devices. The first supercomputers using silicon photonics--already under development at companies such as Intel
They are used also in other industries to manufacture fuel cells, batteries, filters and light-emitting screens."
Twin boundaries in lithium-ion batteries May 21st, 2015insidde: Uncovering the real history of art using a graphene scanner May 21st,
Twin boundaries in lithium-ion batteries May 21st, 2015insidde: Uncovering the real history of art using a graphene scanner May 21st,
Twin boundaries in lithium-ion batteries May 21st, 2015insidde: Uncovering the real history of art using a graphene scanner May 21st,
Twin boundaries in lithium-ion batteries May 21st, 2015defects can'Hulk-up'materials: Berkeley lab study shows properly managed damage can boost material thermoelectric performances May 20th, 2015taking control of light emission:
soft batteries A method for making elastic high-capacity batteries from wood pulp was unveiled by researchers in Sweden and the US.
foam-like battery material that can withstand shock and stress.""It is possible to make incredible materials from trees
"There are limits to how thin a battery can be, but that becomes less relevant in 3d,
"A 3d structure enables storage of significantly more power in less space than is possible with conventional batteries,
In fact, this type of structure and material architecture allows flexibility and freedom in the design of batteries,
Similarly, a single cubic decimeter of the battery material would cover most of a football pitch,
"Hamedi says the aerogel batteries could be used in electric car bodies, as well as in clothing, providing the garment has a lining.
Another partner is leading battery researcher, Professor Yi Cui from Stanford university t
#Researchers synthesize magnetic nanoparticles that could offer alternative to Rare earth magnets Abstract: A team of scientists at Virginia Commonwealth University has synthesized a powerful new magnetic material that could reduce the dependence of the United states
Further potential applications could also be flexible and stretchable electronic devices, luminescent actuators, batteries, smart cloths or sacrificial templates for the growth of new materials.
soft batteries May 31st, 2015new'designer carbon'from Stanford boosts battery performance May 30th, 2015chemists discover key reaction mechanism behind the highly touted sodium-oxygen battery May 28th,
2015photonics/Optics/Lasers A major advance in mastering the extraordinary properties of an emerging semiconductor: Black phosphorus reveals its secrets thanks to a scientific breakthrough made by a team from Universite de Montreal, Polytechnique Montreal and CNRS in France June 2nd, 2015new heterogeneous wavelength tunable laser diode for high-frequency efficiency June 2nd,
2015laboratories NIST's'nano-raspberries'could bear fruit in fuel cells June 9th, 2015mesoporous Particles for the Development of Drug Delivery System Safe to Human bodies June 9th,
2015nist's'nano-raspberries'could bear fruit in fuel cells June 9th, 2015filming the film: Scientists observe photographic exposure live at the nanoscale:
2015investigation of Optical Properties of Quantum dots in Presence of Magnetic, Electrical Fields June 10th, 2015nist's'nano-raspberries'could bear fruit in fuel cells June 9th, 2015filming the film:
Gallium nitride (Gan) and Indium Gallium nitride (Ingan) Technology Targets Fast-growing Markets for Wearable Vision Systems June 2nd, 2015chemists discover key reaction mechanism behind the highly touted sodium-oxygen battery May 28th,
for example, in lambda sensors of automotive catalytic converters and solid oxide fuel cells. The ETH professor is convinced that the industrial importance of these materials will even further increase-for example, in gas sensors, new classes of data storage and computer circuits,
"Even in earlier experiments, scientists noticed that power generation in micro solid oxide fuel cells varies greatly depending on the structure of such cells.
This supports the development of future gas sensors, ion-based data storage and micro energy converters, such as fuel cells-and potentially a range of other as yet unknown applications in the promising field of ionics.##
2015binghamton engineer creates origami battery June 10th, 2015mipt physicists develop ultrasensitive nanomechanical biosensor June 9th, 2015new composite material as CO2 sensor June 8th, 2015discoveries Designer electronics out of the printer:
2015battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage Binghamton engineer creates origami battery June 10th, 2015ultrafast heat conduction can manipulate nanoscale magnets June 8th, 2015diffusion and Remote Detection of Hot-Carriers in Graphene June 8th,
Hydrogels block harmful oxygen June 15th, 2015nist's'nano-raspberries'could bear fruit in fuel cells June 9th, 2015unlocking nanofibers potential:
The results demonstrate a powerful operando technique--from the Latin for"in working condition"--that may revolutionize research on catalysts, batteries, fuel cells,
including batteries and fuel cells.""We are seeing the emergence of a very powerful and versatile technique that leverages both NSLS-II
New non-platinum and nanosized catalyst for polymer electrolyte fuel cell Abstract: Canadelectrochim have discovered a new non-platinum and nano-sized catalyst for the fuel cell based on Mother Nature
which mimics the plant leaf. PEMFC as an optimal solution for the future energy economypolymer electrolyte membrane or proton exchange membrane fuel cell (PEMFC), where chemical energy is converted directly to electrical energy,
provides a highly efficient alternative to a standard internal combustion engine. High power density, clean emissions (water), low temperature operation, rapid start-up and shutdown,
and ability to use fuels from renewable sources are several reason why fuel cells such as PEMFC have attracted attention for large market applications,
It is known that splitting a hydrogen molecule at the anode of fuel cell using platinum is relatively easy.
splitting the oxygen molecule at the cathode of fuel cell (oxygen reduction reaction(,ORR)) is more difficult
and this causes significant polarization losses (lowers efficiency of the fuel cell). An appropriate catalyst for this process has not been discovered
2). Fuel cells generate electricity by combining hydrogen gas with oxygen to produce water (figure 1). Although that sounds perfectly clean and green,
it can poison the platinum catalysts that are important to driving the fuel cell. In the heart of a fuel cell, CO binds tightly to platinum
and prevents it from grabbing hydrogen, the first step in the reaction.)However, Hydrogen produced from water splitting by photosynthesis is very clean
they would short circuit the current in the fuel cell and fuel cell degradation occurs. Advancements in the electrolyte system of PEMFCTHE commercial development of a special electrolyte (single ion conducting polymer electrolyte) changed the field of electrochemical devices in a significant way.
Electrochemists have spent many years in a continuing search for newer, more highly conducting (ions and not electrons) and a more electrochemically stable electrolyte system.
In the direction of operating the fuel cell using a cost effective and non-platinum based catalyst,
Alberta had presented a mechanism for the fuel cell reaction based on Mother Nature which mimics the plant leaf.
Based on this mechanism the reaction of the fuel cell does not require platinum. References 1 Hydrogen
Fuel cells & Infrastructure Technologies Program Multi-Year Research, Development and Demonstration Plan, U s. Department of energy, October 2007.2 Hydrogen fuel Cells & Infrastructure Technologies Program Multi
-Year Research, Development and Demonstration Plan, U s. Department of energy, October 2007.3 M. Doyle and G. Rajendran, Chapter 10, Handbook of fuel cell, edited by W. Vielstich, Volume 3:
Fuel cell technology and Applications, John Wiley Ltd. 2003)##For more information, please click herecontacts: M. Redaphone:
Hydrogels block harmful oxygen June 15th, 2015nist's'nano-raspberries'could bear fruit in fuel cells June 9th, 201 2
News and information Samsung's New Graphene technology Will Double Life Of Your Lithium-Ion Battery July 1st,
2015announcements Samsung's New Graphene technology Will Double Life Of Your Lithium-Ion Battery July 1st, 2015researchers from the UCA, key players in a pioneering study that may explain the origin of several digestive diseases June 30th,
2015interviews/Book reviews/Essays/Reports/Podcasts/Journals/White papers Samsung's New Graphene technology Will Double Life Of Your Lithium-Ion Battery July 1st,
or combusted in fuel cells-in cars for example-to drive engines. Solar fuel cell To connect an existing silicon solar cell to a battery that splits the water may well be an efficient solution now
but it is a very expensive one. Many researchers are therefore targeting their search at a semiconductor material that is able to both convert sunlight into an electrical charge and split the water, all in one;
even though this is still some way off the fifteen percent achieved by silicon cells coupled to a battery.
-so you then actually have a fuel cell in which you can temporarily store your solar energy.
Capacitors often complement batteries in these applications because they can provide large amounts of current quickly.
The performance exceeds that of conventional electrolytic capacitors and thin-film lithium ion batteries, though it doesn't match the lithium ion battery formats commonly used in electronic devices and vehicles."
"This is the first time I've seen a capacitor beat a battery on energy density, "said Perry."
"The combination of high energy density and high power density is uncommon in the capacitor world.""Researchers in Perry's lab have been making arrays of small sol-gel capacitors in the lab to gather information about the material's performance.
have longer battery life and generate less heat than existing mobile devices. The first supercomputers using silicon photonics--already under development at companies such as Intel
#Researchers form complete nanobatteries inside nanopores Nanostructured batteries, when properly designed and built, offer promise for delivering their energy at much higher power and longer life than conventional technology.
Up to a billion of these nanopore batteries could fit in a grain of sand. The nanobatteries were fabricated by atomic layer deposition to make oxide nanotubes (for ion storage) inside metal nanotubes for electron transport, all inside each end of the nanopores.
Research Insights Tiny batteries formed inside nanopores were used to demonstrate that properly scaled nanostructures can utilize the full theoretical capacity of the charge storage material
soft and elastic batteries (Nanowerk News) A method for making elastic high-capacity batteries from wood pulp was unveiled by researchers in Sweden and the US.
foam-like battery material that can withstand shock and stress (Nature Communications, "Self-assembled three-dimensional and compressible interdigitated thin-film supercapacitors and batteries").
"This is a closeup of the soft battery, created with wood pulp nanocellulose. Image: Max Hamedi and Wallenberg Wood Science Center)" It is possible to make incredible materials from trees
and cellulose,"says Max Hamedi, who is a researcher at KTH and Harvard university. One benefit of the new wood-based aerogel material is that it can be used for three-dimensional structures."
"There are limits to how thin a battery can be, but that becomes less relevant in 3d,
"A 3d structure enables storage of significantly more power in less space than is possible with conventional batteries,
In fact, this type of structure and material architecture allows flexibility and freedom in the design of batteries,"Hamedi.
Similarly, a single cubic decimeter of the battery material would cover most of a football pitch,
"Hamedi says the aerogel batteries could be used in electric car bodies, as well as in clothing, providing the garment has a lining.
Another partner is leading battery researcher, Professor Yi Cui from Stanford university y
#Intelligent bacteria for detecting disease Another step forward has just been taken in the area of synthetic biology.
#'Nano-raspberries'could bear fruit in fuel cells (Nanowerk News) Researchers at the National Institute of Standards
which offers high surface area for catalyzing reactions in fuel cells. Individual particles are 3-4 nm in diameter
Curtin/NIST)( click on image to enlarge) The research could help make fuel cells more practical.
Nanoparticles can act as catalysts to help convert methanol to electricity in fuel cells. NIST's 40-minute process for making nano-raspberries, described in a new paper,*has several advantages.
For fuel cells, nanoparticles often are mixed with solvents to bind them to an electrode. To learn how such formulas affect particle properties,
For applications such as liquid methanol fuel cells, catalyst particles should remain separated and dispersed in the liquid,
#New NMR tool helps scientists study elusive battery reaction (Nanowerk News) When working on a unique lithium-germanide battery with colleagues from the National University of Singapore,
scientists at Pacific Northwest National Laboratory encountered a catch-22: They knew an exciting reaction was occurring inside the battery that increased its energy storage capacity dramatically
-but they could not observe the reaction. The researchers needed to understand the process, but taking the battery apart caused the reaction to stop.
PNNL scientist Jian Zhi Hu displays a tiny experimental battery mounted in NMR apparatus used to observe the chemical reaction inside.
To solve the problem, the PNNL scientists encapsulated the battery cell in a plastic holder to allow magnetic waves to penetrate it
and developed a powerful nuclear magnetic resonance (NMR) technique to"see "and understand the electrochemical reactions taking place inside.
lithium-germanide battery and demonstrated how their unique NMR"camera"can be used to examine it
and gather data about reactions that can be observed only as they are happening inside a battery("Probing Lithium Germanide Phase Evolution and Structural Change in a Germanium-in-Carbon nanotube Energy storage system").
"Why It Matterslithium-ion batteries have many uses besides powering cell phones and laptops. Developing safer, more powerful cells with longer life is a worldwide challenge,
Germanium can take on more lithium during the reaction than other materials-making it a promising component for delivering higher battery capacity and superior discharge speeds,
but high battery performance resulting from its favorable uptake of lithium may be a factor in making lithium-germanide batteries attractive in the marketplace.
Scientists can create high-energy density batteries by using lithium with a number of different materials.
and reduce battery life and storage capacity. By using the NMR process to look inside the battery
and observe this reaction as it happened, the scientists found a way to protect the germanium from expanding
This technique significantly stabilizes battery performance. Without embedding germanium in carbon tubes, a battery performs well for a few charging-discharging cycles,
but fades rapidly after that. Using the"core-shell"structure, however, the battery can be discharged and charged thousands of times.
What's Next? Scientists are testing many different materials, including sulfur, cobalt, magnesium, manganese and others, to use with lithium in making batteries.
Many of these materials are potentially useful, but only those that are safe to use
The NMR technique used to enhance the performance of the lithium-germanide reaction may prove useful to scientists working on other types of batteries
"It's all about how to engineer the battery to make it safer and more powerful with a longer life,"said Jian Zhi Hu of PNNL, the lead NMR investigator and a collaborator in the project with Kian Ping Loh,
the leader of the team at the National University of Singapore where the battery was developed."
you have to understand the electrochemistry in the battery. Using NMR to understand hard-to-observe battery reaction phases is useful
when they exist only inside the battery. The procedure could lead to additional opportunities to collaborate with other researchers
#First solar cell made of highly ordered molecular frameworks (Nanowerk News) Researchers at KIT have developed a material suited for photovoltaics.
however, will require extremely low-power sensors that can run for months without battery changes or, even better,
Where its predecessors could use a solar cell to either charge a battery or directly power a device,
and it can power the device directly from the battery. All of those operations also share a single inductor the chip main electrical component which saves on circuit board space
the chip power consumption remains low. e still want to have battery-charging capability, and we still want to provide a regulated output voltage,
Ups and downs The circuit chief function is to regulate the voltages between the solar cell, the battery,
If the battery operates for too long at a voltage that either too high or too low, for instance, its chemical reactants break down,
the new design helps solve many key problems affecting mobile displays such as how to provide an always-on display function without requiring more frequent battery charging
In an engineering first, Cui and his colleagues used lithium-ion battery technology to create one low-cost catalyst that is capable of driving the entire water-splitting reaction.'
'Our group has pioneered the idea of using lithium-ion batteries to search for catalysts, 'Cui said.'
But in 2014, Stanford chemist Hongjie Dai developed a water splitter made of inexpensive nickel and iron that runs on an ordinary 1. 5-volt battery.
'Marriage of batteries and catalysis To find catalytic material suitable for both electrodes, the Stanford team borrowed a technique used in battery research called lithium-induced electrochemical tuning.
The idea is to use lithium ions to chemically break the metal oxide catalyst into smaller and smaller pieces.'
The technique has been used in battery research for many years, but it's a new approach for catalysis. The marriage of these two fields is very powerful
have developed a new method to see inside battery-like devices known as supercapacitors at the atomic level.
where they can be used alongside batteries to enhance a vehicle performance. By using a combination of nuclear magnetic resonance (NMR) spectroscopy
They are used also in flashes in mobile phones and as a complementary technology to batteries in order to boost performance.
when placed alongside a battery in an electric car, a supercapacitor is useful when a short burst of power is required,
such as when overtaking another car, with the battery providing the steady power for highway driving. upercapacitors perform a similar function to batteries
and the paper lead author. heye much better at absorbing charge than batteries, but since they have much lower density,
and that might make them a high-power alternative to batteries. At its most basic level, a battery is made of two metal electrodes (an anode and a cathode) with some sort of solution between them (electrolyte.
When the battery is charged, electrolyte ions are stored in the anode. As the battery discharges, electrolyte ions leave the anode
and move across the battery to chemically react with the cathode. The electrons necessary for this reaction travel through the external circuit,
generating an electric current. A supercapacitor is similar to a battery in that it can generate and store electric current,
but unlike a battery, the storage and release of energy does not involve chemical reactions: instead, positive and negative electrolyte ions simply tickto the surfaces of the electrodes when the supercapacitor is being charged.
When a supercapacitor is being discharged to power a device, the ions can easily opoff the surface
and move back into the electrolyte. The reason why supercapacitors charge and discharge so much faster is that the tickingand oppingprocesses happen much faster than the chemical reactions at work in a battery. o increase the area for ions to stick to,
we fill the carbon electrode with tiny holes, like a carbon sponge, said Griffin. ut it hard to know what the ions are doing inside the holes within the electrode we don know exactly what happens
while it charges. n a battery, the two electrodes are different materials, so different processes are said at work
#New lithium ion battery is safer, tougher, and more powerful Lithium ion batteries (LIBS) are a huge technological advancement from lead acid batteries
which have existed since the late 1850. Thanks to their low weight, high energy density and slower loss of charge when not in use, LIBS have become the preferred choice for consumer electronics.
Lithium-ion cells with cobalt cathodes hold twice the energy of a nickel-based battery and four times that of lead acid.
Despite being a superior consumer battery, LIBS still have some drawbacks. Current manufacturing technology is reaching the theoretical energy density limit for LIBS
These types of batteries, in all of their different lithium-anode combinations, continue to be an essential part of modern consumer electronics
The Korean team tried a totally new approach in making the batteries. According to Dr. Kimoon Kim at IBS, e have investigated already high
and highly anisotropic directionally dependent proton conducting behaviors in porous CB 6 for fuel cell electrolytes.
The new battery is built from pumpkin-shaped molecules called cucurbit 6 uril (CB 6) which are organized in a honeycomb-like structure.
The physical structure of the porous CB 6 enables the lithium ions to battery to diffuse more freely than in conventional LIBS
and exist without the separators found in other batteries. In tests the porous CB 6 solid electrolytes showed impressive lithium ion conductivity.
To compare this to existing battery electrolytes, the team used a measurement of the lithium transference number (tli)
They also subjected the batteries to extreme temperatures of up to 373 K (99.85°C), well above the 80°C typical upper temperature window for exiting LIBS.
In the tests, the batteries were cycled at temperatures between 298 K and 373 K (24.85°C and 99.85°C) for a duration of four days and after each cycle the results showed no thermal runaway and hardly any change in conductivity.
but a lithium air battery potentially feasible. What makes this new technique most exciting is that it is a new method of preparing a solid lithium electrolyte
At its most basic level, your smart phone's battery is powering billions of transistors using electrons to flip on and off billions of times per second.
foldable and lightweight energy storage device that provides the building blocks for next-generation batteries needed to power wearable electronics and implantable medical devices (ACS Central Science,"Self-Assembled Multifunctional Hybrids:
such as batteries and supercapacitors, has been figuring out how to increase the surface area of the device, to store more charge,
and will be more lightweight than traditional batteries used in present day electronics. The ISEM study has been supported financially by the Automotive Australia 2020 CRC as part of its research into electric vehicles.
and plays crucial role for design of next generation electric vehicles A key to unlocking the electric vehicle capability is a lightweight and powerful battery pack. ur simple fabrication method of eco-friendly materials
with increased performance has great potential to be scaled up for use supercapacitor and battery technology. Our next step is to use this material to fabricate flexible wearable supercapacitors with high power density and energy density as well as large scale supercapacitors for electric vehicles. u
"The research focused on a class of oxides called perovskites that are of interest for applications such as gas sensing, water purification, batteries, and fuel cells.
extending a smartphone's battery life by as much as 30%.%Announced as part of an upcoming Kickstarter fundraising campaign, the technology,
which is recycled then back into the phone's battery.""Nikola Technology efficiently converts RF signals like Wi-fi, Bluetooth,
which doesn't so much charge an iphone actively as it does extend its normal battery life.
and the case itself doesn't contain an actual battery of its own to store excess charge.
acting as an all-in-one battery extension package that's sleek, discreet and unobtrusive.""As magical as this sounds, the iphone case won't be able to charge your phone from zero to 100,
either--the antenna and power-converting circuit can only extend the battery life of an iphone 6 by about 30,
#This device brings dead batteries back to life DID you know when a disposable battery stops working,
there is still close to 80 per cent of its power remaining? The team from the Batteroo office in Silicon valley certainly did
and now they have created a new device to ensure batteries are operating to their full capacity.
Known as Batteriser, the device crafted from. 1mm thin stainless-steel slides over a range of battery types
Mr Roohparvar said he hoped the product would shake up the $14 billion disposable battery market. atteroo is the first to unleash existing unused power from a seemingly powerless battery
and by extending battery life by up to eight times, Batteriser pays for itself with the very first purchased pack,
he said. hy throw away perfectly good batteries, or waste money buying new batteries, when we now have a technology that saves money, saves energy,
and can cut the number of batteries that end up in landfills by more than half. Currently the only device of its kind, Batteriser will be available for AA, AAA, C and D-cell batteries,
and will retail at under $us10. 00 for a pack of four sleeves. The product will be available for purchase on Amazon later this year z
#The revolution of military aircraft For anyone with a fascination for flying it is a surreal experience to stand in a hangar with five Bell 407 helicopters and not a single pilot in sight.
The system powered temperature sensors and battery-less low-resolution cameras, and charged standard batteries. The hard part is getting the router to constantly push out enough energy,
says team member Vamsi Talla from the University of Washington in Seattle. When someone is browsing the web,
"Removing the need to think about batteries takes away one of the barriers to the exploitation of those technologies,
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