An integrated platinum-nanocarbon electrocatalyst for efficient oxygen reduction

作者：Lei Huang, Min Wei, Ruijuan Qi, Chung‐Li Dong, Dai Dang, Cheng‐Chieh Yang, Chenfeng Xia, Chao Chen, Shahid Zaman, Fumin Li, Bo You, Bao Yu Xia · 发表于：Nature Communications · 年份：2022 · DOI：10.1038/s41467-022-34444-w · 被引用次数：227 · 研究领域：Electrocatalysts for Energy Conversion、Fuel Cells and Related Materials、Advanced battery technologies research

Abstract Efficient and robust platinum-carbon electrocatalysts are of great significance for the long-term service of high-performance fuel cells. Here, we report a Pt alloy integrated in a cobalt-nitrogen-nanocarbon matrix by a multiscale design principle for efficient oxygen reduction reaction. This Pt integrated catalyst demonstrates an increased mass activity, 11.7 times higher than that of commercial Pt catalyst, and retains a stability of 98.7% after 30,000 potential cycles. Additionally, this integrated catalyst delivers a current density of 1.50 A cm −2 at 0.6 V in the hydrogen-air fuel cell and achieves a power density of 980 mW cm −2 . Comprehensive investigations demonstrate that the synergistic contribution of components and structure in the platinum-carbon integrated catalyst is responsible for the high-efficiency ORR in fuel cells.