Development of New Highly Active and Multi-functional Air Electrode Catalysts Based on Manganese Oxides

2015 Fiscal Year Final Research Report

• Project/Area Number: 25870899
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Inorganic industrial materials; Energy-related chemistry
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: Saito Morihiro 東京農工大学, 大学院工学研究院, 准教授 (20408719)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 高機能触媒 / エネルギー変換

Outline of Final Research Achievements

New air electrode catalysts composed of a manganese oxide (perovskite La0.6Sr0.4MnO3 (LS0.4M) or MnO2 nanosheet (MnNS)) and nano-carbon materials (Ketjen black (KB), carbon nanotube (CNT) and graphene (GP)) were synthesized, and their oxygen reduction/evolution activities and durability against oxidative corrosion were evaluated for the development of next-generation energy conversion and storage devices such as anion-exchange membrane fuel cells (AEMFC) and Li-air secondary batteries (LABs). As a result, LS0.4M/CNT and MnNS/CNT catalysts using the CNT support with high specific surface area and high graphitization degree were found to exhibit the best balanced performances for both catalytic activity and durability.

Free Research Field

電気化学、燃料電池、リチウム電池