AIST team developing Li-air capacitor-battery targeted for EVs

AIST team developing Li-air capacitor-battery targeted for EVs:
A team from Japan’s AIST (National Institute of Advanced Industrial Science and Technology) reports on the development of a “lithium–air capacitor–battery based on a hybrid electrolyte” in a paper in the RSC journal Energy & Environmental Science.
The team had earlier investigated a hybrid electrolyte lithium–air battery, in which a lithium anode in a non-aqueous electrolyte and an air-catalytic cathode in an aqueous electrolyte solution were separated by a ceramic LISICON film. (Earlier post.)
As reported then, the lithium-air cell showed a continuous cathode discharge capacity of 50,000 mAh g-1 (per unit mass of the carbon, catalyst and binder). By comparison, conventional Li-ion batteries offer 120-150 mAh g-1 (active material + conduction assisting carbon + binder), and conventional lithium-air cells offer 700-3,000 mAh g-1.
In the present work, a capacitor electrode was put in the non-aqueous electrolyte solution as an additional cathode in parallel with the air catalytic cathode. The proposed lithium–air batteries with an additional capacitor cathode can successfully unite capacitor character and lithium–air battery character in one device which is now nominated as a “lithium–air capacitor–battery based on a hybrid electrolyte”.
When high power is needed, the capacitor cathode would play the main role of peak power output; when high energy is demanded, the air catalytic cathode would display its high energy character. The adjustability of power output and energy output demonstrate that the proposed lithium–air capacitor–battery should be a promising power system for future electric vehicles.
—Wang et al.
Resources
  • Yonggang Wang, Ping He and Haoshen Zhou (2011) A lithium–air capacitor–battery based on a hybrid electrolyte. Energy Environ. Sci., DOI: 10.1039/C1EE02121D
(Via Green Car Congress)
Related articles
Enhanced by Zemanta

Comments

Post a Comment

Popular posts from this blog

Panasonic to begin mass-production of long-life Li-ion battery system for solar-powered homes in Europe

Image
Panasonic to begin mass-production of long-life Li-ion battery system for solar-powered homes in Europe : Panasonic Corporation will begin mass- production this month of a compact, secure and long-life lithium-ion battery system the company has developed for European homes. This marks the first time for the company to produce in volume such a system designed for Europe. The lithium-ion battery system consists of the Panasonic battery module with nominal capacity of 1.35 kWh and a battery management system designed to control charge and discharge of the battery in accordance with customer needs. The battery system stores excess energy generated from the photovoltaic (PV) power system during peak hours of PV generation and discharges the energy as needed, providing a solution as a household battery storage system that helps self-consumption of solar-generated power. It will also enable households to reduce the dependence on grid power and facilitate the further spread of green ener...
Read more

Short notes on Open Access, Peer review & (insane) publications

Image
This is insane! As a long term peer reviewer I read all articles (not only under review) very carefully. From relatively wide observation the only half of the submitted papers might be accepted for further publication. Not counting in this half the articles which need some (more or less) modifications. Indeed, there are almost half of the articles which went through my hands have a very low quality. These include repeating/copying someone else's research, very poor understanding of the obtained results, not willingness, even to try to explain the obtained results, but just referring to previously published articles (from other researchers)  (which means their result is not unique). Since I do not connect with the publishers other than by e-mail as a reviewer or author, I do not know how busy are Journals is to feel the issues. However, I understand that the publishers have to earn some money from what they are doing. Good it or not (very much) for the progress is a big question...
Read more

Well-dispersed bi-component-active CoO/CoFe2O4 nanocomposites with tunable performances as anode materials for lithium-ion batteries

Image
Well-dispersed bi-component-active CoO/CoFe2O4 nanocomposites with tunable performances as anode materials for lithium-ion batteries : Chem. Commun. , 2012, Advance Article DOI : 10.1039/C1CC15322F, Communication Meixia Li, Ya-Xia Yin, Congju Li, Fazhi Zhang, Li-Jun Wan, Sailong Xu, David G. Evans CoO/CoFe 2 O 4 nanocomposites, calcined from hydrotalcite precursors, exhibit tunable cycle performances and rate capabilities underlain by well-dispersed bi-component active phases. To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry (Via RSC - Chem. Commun. latest articles ) Related articles Graphene nanocomposite a bridge to better batteries (sciencedaily.com) Scientists Discover Promising Experimental Nanocomposite Fire Retardant (azonano.com) Graphene-based nanocomposite to boost battery performance (news.bioscholar.com) NaturalNano Receives Allowance for Crucia...
Read more