Ontology highlight
ABSTRACT:
SUBMITTER: Wang YC
PROVIDER: S-EPMC9629713 | biostudies-literature | 2022 Nov
REPOSITORIES: biostudies-literature
Wang Yu-Cheng YC Huang Wen W Wan Li-Yang LY Yang Jian J Xie Rong-Jie RJ Zheng Yan-Ping YP Tan Yuan-Zhi YZ Wang Yue-Sheng YS Zaghib Karim K Zheng Li-Rong LR Sun Shu-Hui SH Zhou Zhi-You ZY Sun Shi-Gang SG
Science advances 20221102 44
The rational design of non-Pt oxygen reduction reaction (ORR) catalysts and catalyst layers in fuel cells is largely impeded by insufficient knowledge of triple-phase boundaries (TPBs) in the micropore and mesopore ranges. Here, we developed a size-sensitive molecular probe method to resolve the TPB of Fe/N/C catalyst layers in these size ranges. More than 70% of the ORR activity was found to be contributed by the 0.8- to 2.0-nanometer micropores of Fe/N/C catalysts, even at a low micropore area ...[more]