Development of Innovative Technologies for Reduction in Platinum Usage

Abstract

Reduction of the usage of platinum, which is used as a catalyst, in polymer electrolyte fuel cells (PEFCs) is one of the most important issues for the widespread commercialization of fuel cell vehicles. To achieve the activity in the 2030 NEDO target, development of highly active and durable Pt core-shell and alloy catalysts was started in 2020 by five academic and industrial institutions focusing on the following innovative technologies: 1) innovative core-shell catalyst technology, 2) innovative surface modification with special organic compounds, 3) innovative supporting materials with high surface areas interconnected pores, 4) innovative proton conduction within the pores of supporting materials using ionic liquids. In this review article, the background and recent activities on the development of Pt core-shell catalysts in our project are overviewed.