Elucidation of electrode-reaction mechanism of manganese-based cathode materials for lithium-ion batteries

2016 Fiscal Year Final Research Report

• Project/Area Number: 25410256
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Device related chemistry
• Research Institution: National Institute for Materials Science
• Principal Investigator: Ozawa Kiyoshi 国立研究開発法人物質・材料研究機構, エネルギー・環境材料研究拠点, 主席研究員 (90343855)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: リチウム二次電池

Outline of Final Research Achievements

We studied the electrode mechanism systems of Li2MnO3 and Ni- and Cr-doped Li2MnO3. In the latter half of the research, we also studied MoS2/C composite anode materials for lithium-ion battery system. It was found that the electrode characteristics of the materials significantly depend on the diffusion of Li ions in the cathode materials during charge-discharge cycling. The diffusion is related to the crystalline particle size and also types and amounts of transition metal ions to be added. For the study of MoS2/C composites, it was found that the electrode characteristics are improved by using graphene as carbon.

Free Research Field

電気化学