| 论文标题 |
Boosting Oxygen Reduction via Integrated Construction and Synergistic Catalysis of Porous Platinum Alloy and Defective Graphitic Carbon |
| 作者 |
Lei Huang, Ya‐Qiong Su, Ruijuan Qi, Dai Dang, Yanyang Qin, Shibo Xi, Shahid Zaman, Bo You, Shujiang Ding, Bao Yu Xia |
| 发表/完成日期 |
2021-11-22 |
| 期刊名称 |
Angewandte Chemie International Edition |
| 期卷 |
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| 相关文章 |
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| 论文简介 |
Integrated fabrication through the strong interaction between catalyst and carrier is crucial to realize efficient oxygen electrocatalysis for fuel cells. We report herein a porous Pt‐rich alloy encapsulated by graphitic carbon via integration engineering, where a synergistic catalysis between ternary PtCuCo alloy and graphitic Co‐N‐C results in the optimized reaction pathway and improved oxygen reduction reaction (ORR) performance. The hybrid catalyst PtCuCo@Co‐N‐C delivers a mass activity of 1.14 A mgPt−1 at 0.9 V vs. RHE and a peak power density of 960 mW cm−2 in the full‐cell assessment, outperforming commercial Pt/C catalyst (0.12 A mgPt−1 and 780 mW cm−2). Experimental results combined with theoretical simulations suggest that the mutual assistance between porous Pt alloy and Co‐N‐C accounts for the enhanced catalytic performance. Such integrated engineering concept is significant … |
(创新港)
