Enhanced oxygen reduction with single-atomic-site iron catalysts for a zinc-air battery and hydrogen-air fuel cell

Yuanjun Chen, Shufang Ji, Shu Zhao, Wenxing Chen, Juncai Dong, Weng-Chon Cheong, Rongan Shen, Xiaodong Wen, Lirong Zheng, Alexandre I. Rykov, Shichang Cai, Haolin Tang, Zhongbin Zhuang, Chen Chen, Qing Peng, Dingsheng Wang () and Yadong Li
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Yuanjun Chen: Tsinghua University
Shufang Ji: Tsinghua University
Shu Zhao: Beijing University of Technology
Wenxing Chen: Tsinghua University
Juncai Dong: Chinese Academy of Sciences
Weng-Chon Cheong: Tsinghua University
Rongan Shen: Tsinghua University
Xiaodong Wen: Chinese Academy of Sciences
Lirong Zheng: Chinese Academy of Sciences
Alexandre I. Rykov: Chinese Academy of Sciences
Shichang Cai: Wuhan University of Technology
Haolin Tang: Wuhan University of Technology
Zhongbin Zhuang: Beijing University of Chemical Technology
Chen Chen: Tsinghua University
Qing Peng: Tsinghua University
Dingsheng Wang: Tsinghua University
Yadong Li: Tsinghua University

Nature Communications, 2018, vol. 9, issue 1, 1-12

Abstract: Abstract Efficient, durable and inexpensive electrocatalysts that accelerate sluggish oxygen reduction reaction kinetics and achieve high-performance are highly desirable. Here we develop a strategy to fabricate a catalyst comprised of single iron atomic sites supported on a nitrogen, phosphorus and sulfur co-doped hollow carbon polyhedron from a metal-organic framework@polymer composite. The polymer-based coating facilitates the construction of a hollow structure via the Kirkendall effect and electronic modulation of an active metal center by long-range interaction with sulfur and phosphorus. Benefiting from structure functionalities and electronic control of a single-atom iron active center, the catalyst shows a remarkable performance with enhanced kinetics and activity for oxygen reduction in both alkaline and acid media. Moreover, the catalyst shows promise for substitution of expensive platinum to drive the cathodic oxygen reduction reaction in zinc-air batteries and hydrogen-air fuel cells.

Date: 2018
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DOI: 10.1038/s41467-018-07850-2

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