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RESEARCH

ENERGY STORAGE & CONVERSION MATERIALS LAB.

Next generation battery

Home Research Next generation battery

Fundamentals on Lithium metal battery

Rechargeable non-aqueous lithium oxygen (Li-O2) batteries have attracted worldwide research attention due to high theoretical specific energy density (more than 1000 Wh kg-1). However, poor cycle life and low energy efficiency, derived from electrical insulating nature of discharge product and irreversible side reactions, limit the practical application of Li-O2 batteries.

Redox mediator

In order to facilitate the formation and decomposition of Li2O2 and increase the energy efficiency, our researches are focused on redox mediators (RMs) which is the soluble catalyst in Li-O2 batteries. We are developing the new RMs, making strategies to use the RMs more effectively, and revealing the problems of RMs.

Singlet oxygen chemistry

Our researches are focused on alleviating the irreversible side reactions in Li-O2 batteries. As it is demonstrated that singlet oxygen (1O2) revealed as main cause of side reactions in Li-O2 batteries, we are also focusing on the singlet oxygen chemistry to improve the stability of the Li-O2 batteries.

Lithium metal protection

For the Next-generation batteries using lithium metal as anode material, controlling the lithium metal, which is very reactive material, is important issue.
We are developing the stable lithium metal protective layer to suppress the lithium dendrite and side reactions on the surface of lithium.

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