Proposal Papers for Policy Making and Governmental Action toward Low Carbon Society

LCS-FY2015-PP-02

Secondary Battery System (Vol. 3):
Cost Evaluation and Technological Challenges of a Lithium-air Battery

Summary

 Center for Low Carbon Society Strategy( LCS) has been designing several lithium ion batteries, which are the combinations of conventional cathode active materials, i.e. lithium cobalt oxide, lithium manganese oxide, lithium nickel oxide with graphite as anode active material, and innovative cathode active material of Li2O with silicon-based anode active materials.

 The results showed that production cost of the designed battery is possibly reduced to 5 JPY/ WhST in year 2030 by utilizing high-capacity active materials. On the other hand, introduction and propagation of high power, high specific energy, and low-cost batteries is necessary to realize a low carbon society. In this proposal, we examined a lithium-air battery which is expected to have higher density energy than a lithium ion battery. Specifically, we designed a 10kWh lithium-air battery system for stationary storage, which is composed by lithium-graphene anode and porous graphene cathode with 2000mAh/g capacity. Performance and cost of this battery system are analyzed. This analysis reveals the specific energy of the lithium-air battery system is 180WhST/kg, and the production cost is 28 JPY/ WhST.

All Pages

Related Proposal Papers