Space-resolved active site analysis of non-Pt group oxygen reduction reaction catalysts

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K20940
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry; Analytical chemistry
• Research Institution: University of Tsukuba
• Principal Investigator: NIWA Hideharu 筑波大学, 数理物質系, 助教 (50704566)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 燃料電池 / 二次電池 / 軟X線分光 / 正極触媒 / 放射光

Outline of Final Research Achievements

Active sites of non-Pt group oxygen reduction reaction catalysts for polymer electrolyte fuel cell were studied by space-resolved X-ray spectroscopy. Scanning transmission x-ray microscopy of the non-Pt cathode catalysts with different particle sizes showed that the non-Pt cathod catalyst with a smaller particle size formed a fine three-phase boundary.
Cathode active materials for sodium-ion batteries, which have larger particle sizes were also studied. The effects of element substitution and redox reactions on electronic states of layered oxides and metal-hexacyanoferrates for sodium-ion battery cathodes were revealed by X-ray spectroscopy.

Free Research Field

物理化学