An integrated platinum-nanocarbon electrocatalyst for efficient oxygen reduction

• DOI: 10.1038/s41467-022-34444-w
• Publication Date: 2022-11-07T05:02:54Z
• Authors: Lei Huang; Min Wei; Ruijuan Qi; Chung-Li Dong; Dai Dang; Cheng-Chieh Yang; Chenfeng Xia; Chao Chen; Shahid Zaman; Fu-Min Li; Bo You; Bao Yu Xia
• Keywords: Science; Q; 7. Clean energy; Article

AbstractEfficient 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.