|英文要約||Title: Technology Development for PEFC Highly Utilization. Advanced Analysis and Evaluation Technology. Development of Innovative Technologies to Reduce Platinum (Pt) Usage (FY2015-FY2019) FY2017 Annual Report
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 PEFC-driven vehicles. The target of this project is to establish an innovative concept that can improve the index “power density multiplied by durability per unit PGM loading” more than 10 times of the present level in FY2019. To attain the target, development of highly active and durable Pt core-shell catalysts with advanced core and shell composition and structure have been carried out through a collaboration of five academic and industrial institutions. Doshisha University, Tohoku University and Toyota Central R&D Laboratories have developed highly active and durable Pt core-shell catalysts, especially focusing on the composition and structure of the core materials. Chiba University and National Institute of Advanced Industrial Science and Technologies (AIST) have developed the structure of the catalyst/electrolyte interface that gives high activity to Pt core-shell catalysts. By the end of this fiscal year, highly active and durable Pt core-shell catalysts were developed and several promising organic molecules improving the activity were identified, so that the intermediate target of the project has been achieved.