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An integrated platinum-nanocarbon electrocatalyst for efficient oxygen reduction.

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.

SUBMITTER: Huang L

PROVIDER: S-EPMC9640595 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature

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An integrated platinum-nanocarbon electrocatalyst for efficient oxygen reduction.

Huang Lei L Huang Lei L Wei Min M Qi Ruijuan R Dong Chung-Li CL Dang Dai D Yang Cheng-Chieh CC Xia Chenfeng C Chen Chao C Zaman Shahid S Li Fu-Min FM You Bo B Xia Bao Yu BY

Nature communications 20221107 1

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 inte ...[more]

PMID: 36344552

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