Design of N-Coordinated Dual-Metal Sites: A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction

Jing Wang; Zhengqing Huang; Wei Liu; Chunran Chang; Haolin Tang; Zhijun Li; Wenxing Chen; Chunjiang Jia; Tao Yao; Shiqiang Wei; Yuen Wu; Yadong Li

doi:10.1021/jacs.7b10385

Design of N-Coordinated Dual-Metal Sites: A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction

Jing Wang, Zhengqing Huang, Wei Liu, Chunran Chang^*, Haolin Tang, Zhijun Li, Wenxing Chen, Chunjiang Jia, Tao Yao, Shiqiang Wei, Yuen Wu, Yadong Li

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1310 Citations (Scopus)

Abstract

We develop a host-guest strategy to construct an electrocatalyst with Fe-Co dual sites embedded on N-doped porous carbon and demonstrate its activity for oxygen reduction reaction in acidic electrolyte. Our catalyst exhibits superior oxygen reduction reaction performance, with comparable onset potential (E_onset, 1.06 vs 1.03 V) and half-wave potential (E_1/2, 0.863 vs 0.858 V) than commercial Pt/C. The fuel cell test reveals (Fe,Co)/N-C outperforms most reported Pt-free catalysts in H₂/O₂ and H₂/air. In addition, this cathode catalyst with dual metal sites is stable in a long-term operation with 50 000 cycles for electrode measurement and 100 h for H₂/air single cell operation. Density functional theory calculations reveal the dual sites is favored for activation of O-O, crucial for four-electron oxygen reduction.

Original language	English
Pages (from-to)	17281-17284
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	139
Issue number	48
DOIs	https://doi.org/10.1021/jacs.7b10385
Publication status	Published - 6 Dec 2017
Externally published	Yes

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title = "Design of N-Coordinated Dual-Metal Sites: A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction",

abstract = "We develop a host-guest strategy to construct an electrocatalyst with Fe-Co dual sites embedded on N-doped porous carbon and demonstrate its activity for oxygen reduction reaction in acidic electrolyte. Our catalyst exhibits superior oxygen reduction reaction performance, with comparable onset potential (Eonset, 1.06 vs 1.03 V) and half-wave potential (E1/2, 0.863 vs 0.858 V) than commercial Pt/C. The fuel cell test reveals (Fe,Co)/N-C outperforms most reported Pt-free catalysts in H2/O2 and H2/air. In addition, this cathode catalyst with dual metal sites is stable in a long-term operation with 50 000 cycles for electrode measurement and 100 h for H2/air single cell operation. Density functional theory calculations reveal the dual sites is favored for activation of O-O, crucial for four-electron oxygen reduction.",

author = "Jing Wang and Zhengqing Huang and Wei Liu and Chunran Chang and Haolin Tang and Zhijun Li and Wenxing Chen and Chunjiang Jia and Tao Yao and Shiqiang Wei and Yuen Wu and Yadong Li",

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year = "2017",

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doi = "10.1021/jacs.7b10385",

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T1 - Design of N-Coordinated Dual-Metal Sites

T2 - A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction

AU - Wang, Jing

AU - Huang, Zhengqing

AU - Liu, Wei

AU - Chang, Chunran

AU - Tang, Haolin

AU - Li, Zhijun

AU - Chen, Wenxing

AU - Jia, Chunjiang

AU - Yao, Tao

AU - Wei, Shiqiang

AU - Wu, Yuen

AU - Li, Yadong

PY - 2017/12/6

Y1 - 2017/12/6

N2 - We develop a host-guest strategy to construct an electrocatalyst with Fe-Co dual sites embedded on N-doped porous carbon and demonstrate its activity for oxygen reduction reaction in acidic electrolyte. Our catalyst exhibits superior oxygen reduction reaction performance, with comparable onset potential (Eonset, 1.06 vs 1.03 V) and half-wave potential (E1/2, 0.863 vs 0.858 V) than commercial Pt/C. The fuel cell test reveals (Fe,Co)/N-C outperforms most reported Pt-free catalysts in H2/O2 and H2/air. In addition, this cathode catalyst with dual metal sites is stable in a long-term operation with 50 000 cycles for electrode measurement and 100 h for H2/air single cell operation. Density functional theory calculations reveal the dual sites is favored for activation of O-O, crucial for four-electron oxygen reduction.

AB - We develop a host-guest strategy to construct an electrocatalyst with Fe-Co dual sites embedded on N-doped porous carbon and demonstrate its activity for oxygen reduction reaction in acidic electrolyte. Our catalyst exhibits superior oxygen reduction reaction performance, with comparable onset potential (Eonset, 1.06 vs 1.03 V) and half-wave potential (E1/2, 0.863 vs 0.858 V) than commercial Pt/C. The fuel cell test reveals (Fe,Co)/N-C outperforms most reported Pt-free catalysts in H2/O2 and H2/air. In addition, this cathode catalyst with dual metal sites is stable in a long-term operation with 50 000 cycles for electrode measurement and 100 h for H2/air single cell operation. Density functional theory calculations reveal the dual sites is favored for activation of O-O, crucial for four-electron oxygen reduction.

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DO - 10.1021/jacs.7b10385

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AN - SCOPUS:85037524569

SN - 0002-7863

VL - 139

SP - 17281

EP - 17284

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 48

ER -

Design of N-Coordinated Dual-Metal Sites: A Stable and Active Pt-Free Catalyst for Acidic Oxygen Reduction Reaction

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