Tiny probe could produce big improvements in batteries and fuel cells: A new method helps scientists get an atom's level understanding of electrochemical properties -- ScienceDaily
The key to needed improvements in the quest for better batteries and fuels cells likely lies in the nanoscale, a realm so tiny that the movement of a few atoms or molecules can shift the landscape. A team researchers has built a new window into this world to help scientists better understand how batteries really work.
Affichage des articles dont le libellé est batteries. Afficher tous les articles
Affichage des articles dont le libellé est batteries. Afficher tous les articles
New concept turns battery technology upside-down | MIT News
New concept turns battery technology upside-down | MIT News
A new approach to the design of a liquid battery, using a passive, gravity-fed arrangement similar to an old-fashioned hourglass, could offer great advantages due to the system’s low cost and the simplicity of its design and operation, says a team of MIT researchers who have made a demonstration version of the new battery.
A new approach to the design of a liquid battery, using a passive, gravity-fed arrangement similar to an old-fashioned hourglass, could offer great advantages due to the system’s low cost and the simplicity of its design and operation, says a team of MIT researchers who have made a demonstration version of the new battery.
PNNL: News - Feature: How to make a battery in 7 easy steps (with video)
PNNL: News - Feature: How to make a battery in 7 easy steps (with video)
From smartphones to electric cars to home energy storage devices, rechargeable batteries power our modern lives. But have you ever stopped to wonder what's inside these devices that allow us to send emojis, drive around town and so much more? If so, check out the Advanced Battery Facility.
The facility is one of a very few experimental battery manufacturing labs that are available to help academia and industry develop and test new batteries. Most of these places are owned by private companies that keep their proprietary tests under wraps, but a few DOE labs — Pacific Northwest National Laboratory, Oak Ridge National Laboratory and Argonne National Laboratory — operate more open facilities so the results can often be made public.
Hierarchical Assemblies of Carbon Nanotubes for Ultraflexible Li-Ion Batteries - Ahmad - 2016 - Advanced Materials - Wiley Online Library
Hierarchical Assemblies of Carbon Nanotubes for Ultraflexible Li-Ion Batteries - Ahmad - 2016 - Advanced Materials - Wiley Online Library
The flexible batteries that are needed to power flexible circuits and displays remain challenging, despite considerable progress in the fabrication of such devices. Here, it is shown that flexible batteries can be fabricated using arrays of carbon nanotube microstructures, which decouple stress from the energy-storage material. It is found that this battery architecture imparts exceptional flexibility (radius ≈ 300 μm), high rate (20 A g−1), and excellent cycling stability.
The flexible batteries that are needed to power flexible circuits and displays remain challenging, despite considerable progress in the fabrication of such devices. Here, it is shown that flexible batteries can be fabricated using arrays of carbon nanotube microstructures, which decouple stress from the energy-storage material. It is found that this battery architecture imparts exceptional flexibility (radius ≈ 300 μm), high rate (20 A g−1), and excellent cycling stability.
Speedy ion conduction in solid electrolytes clears road for advanced energy devices | ORNL
Speedy ion conduction in solid electrolytes clears road for advanced energy devices | ORNL
In a rechargeable battery, the electrolyte transports lithium ions from the negative to the positive electrode during discharging. The path of ionic flow reverses during recharging. The organic liquid electrolytes in commercial lithium-ion batteries are flammable and subject to leakage, making their large-scale application potentially problematic. Solid electrolytes, in contrast, overcome these challenges, but their ionic conductivity is typically low.
In a rechargeable battery, the electrolyte transports lithium ions from the negative to the positive electrode during discharging. The path of ionic flow reverses during recharging. The organic liquid electrolytes in commercial lithium-ion batteries are flammable and subject to leakage, making their large-scale application potentially problematic. Solid electrolytes, in contrast, overcome these challenges, but their ionic conductivity is typically low.
The Search for a Better Battery - IEEE Spectrum
The Search for a Better Battery - IEEE Spectrum
The classic combination of government research funding and entrepreneurial gumption won’t take energy storage to the next level anytime soon
By G. Pascal Zachary Posted 25 Apr 2016
The classic combination of government research funding and entrepreneurial gumption won’t take energy storage to the next level anytime soon
By G. Pascal Zachary Posted 25 Apr 2016
Unexpected discovery leads to a better battery
Unexpected discovery leads to a better battery
(Nanowerk News) An unexpected discovery has led to a rechargeable battery that's as inexpensive as conventional car batteries, but has a much higher energy density. The new battery could become a cost-effective, environmentally friendly alternative for storing renewable energy and supporting the power grid. A team based at DOE's Pacific Northwest National Laboratory identified this energy storage gem after realizing the new battery works in a different way than they had assumed. A recent study in the journal Nature Energy describes the battery ("Reversible aqueous zinc/manganese oxide energy storage from conversion reactions").
Read more: Unexpected discovery leads to a better battery
(Nanowerk News) An unexpected discovery has led to a rechargeable battery that's as inexpensive as conventional car batteries, but has a much higher energy density. The new battery could become a cost-effective, environmentally friendly alternative for storing renewable energy and supporting the power grid. A team based at DOE's Pacific Northwest National Laboratory identified this energy storage gem after realizing the new battery works in a different way than they had assumed. A recent study in the journal Nature Energy describes the battery ("Reversible aqueous zinc/manganese oxide energy storage from conversion reactions").
Read more: Unexpected discovery leads to a better battery
A battery you never have to replace | KurzweilAI
A battery you never have to replace | KurzweilAI
University of California, Irvine researchers have invented a new nanowire-based battery material that can be recharged hundreds of thousands of times, moving us closer to a battery that would never require replacement.
It could lead to commercial batteries with greatly lengthened lifespans for computers, smartphones, appliances, cars, and spacecraft.
University of California, Irvine researchers have invented a new nanowire-based battery material that can be recharged hundreds of thousands of times, moving us closer to a battery that would never require replacement.
It could lead to commercial batteries with greatly lengthened lifespans for computers, smartphones, appliances, cars, and spacecraft.
PNNL: News - Unexpected discovery leads to a better battery
PNNL: News - Unexpected discovery leads to a better battery
An unexpected discovery has led to a rechargeable battery that's as inexpensive as conventional car batteries, but has a much higher energy density. The new battery could become a cost-effective, environmentally friendly alternative for storing renewable energy and supporting the power grid.
A team based at the Department of Energy's Pacific Northwest National Laboratory identified this energy storage gem after realizing the new battery works in a different way than they had assumed. The journal Nature Energy published a paper today that describes the battery.
An unexpected discovery has led to a rechargeable battery that's as inexpensive as conventional car batteries, but has a much higher energy density. The new battery could become a cost-effective, environmentally friendly alternative for storing renewable energy and supporting the power grid.
A team based at the Department of Energy's Pacific Northwest National Laboratory identified this energy storage gem after realizing the new battery works in a different way than they had assumed. The journal Nature Energy published a paper today that describes the battery.
CNRS – Batterie 19-08-15
CNRS – Batterie 19-08-15
Télécharger le portefeuille des offres technologiques du CNRS sur la thématique des Batteries
Innovate UK and Warwick to power up new 30% cheaper battery technology for solar storage - Science|Business
Innovate UK and Warwick to power up new 30% cheaper battery technology for solar storage - Science|Business
Researchers at WMG, University of Warwick have formed a new research partnership with battery technology innovators Faradion, and smart energy storage specialists Moixa Technology, to develop sodium-ion cells as a significantly lower cost alternative to lithium-ion batteries for solar energy storage. This collaboration is being part funded by Innovate UK, the UK’s innovation agency.
Researchers at WMG, University of Warwick have formed a new research partnership with battery technology innovators Faradion, and smart energy storage specialists Moixa Technology, to develop sodium-ion cells as a significantly lower cost alternative to lithium-ion batteries for solar energy storage. This collaboration is being part funded by Innovate UK, the UK’s innovation agency.
Flexible, printed and thin film batteries:A new era for energy storage
Flexible, printed and thin film batteries:A new era for energy storage
To get a better understanding of batteries with new form andstructural factors, their technologies, markets, opportunities and players, please refer to IDTechEx's report Flexible, Printed and Thin
Film Batteries 2016-2026: Technologies, Forecasts, and Players External Link and attend the Energy Harvesting and Storage Europe External Link event at IDTechEx Show!
To get a better understanding of batteries with new form andstructural factors, their technologies, markets, opportunities and players, please refer to IDTechEx's report Flexible, Printed and Thin
Film Batteries 2016-2026: Technologies, Forecasts, and Players External Link and attend the Energy Harvesting and Storage Europe External Link event at IDTechEx Show!
Nanotubes and nanocrystals combine to produce green fuels - Materials Today
Nanotubes and nanocrystals combine to produce green fuels - Materials Today
Chemists at the University of Texas at Arlington (UTA) have developed new high-performing materials that can use sunlight to split carbon dioxide and water into usable fuels like methanol and hydrogen gas. These ‘green fuels’ could be used to power cars and home appliances, or store energy in batteries.
Chemists at the University of Texas at Arlington (UTA) have developed new high-performing materials that can use sunlight to split carbon dioxide and water into usable fuels like methanol and hydrogen gas. These ‘green fuels’ could be used to power cars and home appliances, or store energy in batteries.
La vie des électrons et le vieillissement de batteries
La vie des électrons et le vieillissement de batteries
Comprendre comment les électrons émis lors de la décharge d’une batterie interagissent avec l’électrolyte est indispensable pour mieux appréhender les causes de leur vieillissement. Les chercheurs du Laboratoire de chimie-physique (CNRS/Université Paris-Sud) et du laboratoire Nanosciences et innovation pour les matériaux la biomédecine et l'énergie (CNRS/CEA) ont utilisé la radiolyse impulsionnelle picoseconde pour étudier la formation des électrons et leur interaction avec les carbonates de l’électrolyte. Ils ont mis en évidence un comportement particulier dans le cas du carbonate de propylène cyclique par rapport aux espèces non cycliques (linéaires). Ces travaux font l’objet d’une publication dans le Journal of Physical Chemistry Letters.
Comprendre comment les électrons émis lors de la décharge d’une batterie interagissent avec l’électrolyte est indispensable pour mieux appréhender les causes de leur vieillissement. Les chercheurs du Laboratoire de chimie-physique (CNRS/Université Paris-Sud) et du laboratoire Nanosciences et innovation pour les matériaux la biomédecine et l'énergie (CNRS/CEA) ont utilisé la radiolyse impulsionnelle picoseconde pour étudier la formation des électrons et leur interaction avec les carbonates de l’électrolyte. Ils ont mis en évidence un comportement particulier dans le cas du carbonate de propylène cyclique par rapport aux espèces non cycliques (linéaires). Ces travaux font l’objet d’une publication dans le Journal of Physical Chemistry Letters.
Graphenano and Grabat launch graphene-based batteries! | Graphene-Info
Graphenano and Grabat launch graphene-based batteries! | Graphene-Info
"The Spanish Graphenano recently introduced, together with its Chinese partner Chint, graphene polymer batteries that reportedly allow for a range of 800 kilometers in electric vehicles and can be charged in a few minutes. The batteries are meant for domestic use, in the automotive sector (both cars and bicycles), drones or even pacemakers. "
"The Spanish Graphenano recently introduced, together with its Chinese partner Chint, graphene polymer batteries that reportedly allow for a range of 800 kilometers in electric vehicles and can be charged in a few minutes. The batteries are meant for domestic use, in the automotive sector (both cars and bicycles), drones or even pacemakers. "
Des batteries en seconde vie réutilisées pour la recharge rapide des véhicules électriques
Des batteries en seconde vie réutilisées pour la recharge rapide des véhicules électriques
A l’image d’autres constructeurs, Renault s’engage pour développer la seconde vie des batteries lithium-ion. A l’issue d’un partenariat avec Connected Energy, celles-ci serviront à stocker de l’électricité d'origine renouvelable destinée à la recharge rapide des véhicules électriques.
A l’image d’autres constructeurs, Renault s’engage pour développer la seconde vie des batteries lithium-ion. A l’issue d’un partenariat avec Connected Energy, celles-ci serviront à stocker de l’électricité d'origine renouvelable destinée à la recharge rapide des véhicules électriques.
La voiture électrique est-elle vraiment écologique ?
La voiture électrique est-elle vraiment écologique ?
Extrait :
"Une voiture alimentée par de l'électricité provenant d'une centrale nucléaire, comme c'est souvent le cas en France, émet en moyenne un gramme par kilomètre d'équivalent CO2. Quand l'électricité d'un véhicule vient d'une centrale au charbon, c'est 150 fois plus ! Le taux est alors supérieur à la moyenne actuelle des émissions de CO2 des voitures à essence en France. La situation est particulièrement problématique dans des pays comme la Chine, dont la production électrique est assurée à 70 % par des centrales au charbon et qui prévoit en 2020 un parc de cinq millions de véhicules rechargeables"
Extrait :
"Une voiture alimentée par de l'électricité provenant d'une centrale nucléaire, comme c'est souvent le cas en France, émet en moyenne un gramme par kilomètre d'équivalent CO2. Quand l'électricité d'un véhicule vient d'une centrale au charbon, c'est 150 fois plus ! Le taux est alors supérieur à la moyenne actuelle des émissions de CO2 des voitures à essence en France. La situation est particulièrement problématique dans des pays comme la Chine, dont la production électrique est assurée à 70 % par des centrales au charbon et qui prévoit en 2020 un parc de cinq millions de véhicules rechargeables"
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