Power storage device and material for its electrode

Achieve energy density equivalent to lead battery by using only organic material!
Safe, Low cost, and Long life

Overview

　The applicability of quinone compound for both cathode and anode has been considered, aiming for low cost and safe energy storage material that does not contain rare or toxic element. However, even if quinone compound is supported on a porous material such as activated carbon, the quinone compound leaches out from the porous material, resulting in a short life span (that is to say poor cycle life) as an energy storage material.　
　This invention solves the issue of cycle life. Consequently, we have demonstrated that the energy density of the new power storage device reaches the same level as a lead battery even though it is composed only of organic material.

Cycle life

Product Application

・Stationary storage battery application for smart grid　
・Home energy storage system
・Distributed power source for industrial application

Related Works

[1] Takaaki Tomai, Satoshi Mitani, Daiki Komatsu, Yuji Kawaguchi, Itaru Honma Sci. Rep. 4, 3591 (2014).

IP Data

IP No.　 ： JP6158308,US9620297,CN201480017828.6,KR1834623
Inventor ： HONMA Itaru, MITANI Satoshi, TOMAI Takaaki
keyword ： RedoxCapacitor, QuinonicCathode, OrganicCathode