Iron-facilitated surface reconstruction to in-situ generate nickel–iron oxyhydroxide on self-supported FeNi alloy fiber paper for efficient oxygen evolution reaction

Zhang，Gaowei1; Zeng，Junrong1; Yin，Jing2; Zuo，Chunyan1; Wen，Peng1; Chen，Hongtao1; Qiu，Yejun1

2021-06-05

10.1016/j.apcatb.2021.119902

APPLIED CATALYSIS B-ENVIRONMENTAL   影响因子和分区

0926-3373

High-performance and low-cost electrocatalysts for oxygen evolution reaction (OER) are urgently desired to improve the overall efficiency of electrochemical water splitting. Here, a porous and self-supported FeNi-alloy fiber paper is successfully fabricated to achieve excellent OER performance with an ultralow overpotential, as well as remarkable stability. It is demonstrated that Fe substitution into metallic nickel can enable the inactive metallic nickel to endow highly electrocatalytic activity. Therefore, Fe substitution plays a key role for the outstanding performance. Specifically, the leaching of partial Fe atoms on surface of alloy facilitates surface reconstruction to generate active FeNi-oxyhydroxides under OER conditions. Meanwhile, Fe atoms can induce the lengthening of Ni-O bonds within oxyhydroxides for promoting the decomposition of *OOH intermediate species into O. This work provides new insights into the underlying mechanisms of Fe substitution into metal nickel for improving OER activity, which can accelerate the exploitation of low-cost, efficient and durable electrocatalysts.

Electrocatalysis Nickel−iron oxyhydroxide Oxygen evolution reaction Reconstruction Water splitting

SCI ; EI

英语

ESI高被引

其他

WOS:000621626700003

20210409818989

Binary alloys ; Costs ; Electrocatalysts ; Nickel compounds ; Oxygen evolution reaction ; Surface reconstruction

Chemical Agents and Basic Industrial Chemicals:803 ; Cost and Value Engineering; Industrial Economics:911

CHEMISTRY

2-s2.0-85099618044

Scopus

1.Shenzhen Engineering Lab of Flexible Transparent Conductive Films,School of Materials Science and Engineering,Harbin Institute of Technology,Shenzhen,518055,China
2.South University of Science and Technology,Shenzhen,518055,China

Zhang，Gaowei,Zeng，Junrong,Yin，Jing,等. Iron-facilitated surface reconstruction to in-situ generate nickel–iron oxyhydroxide on self-supported FeNi alloy fiber paper for efficient oxygen evolution reaction[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2021,286.

Zhang，Gaowei.,Zeng，Junrong.,Yin，Jing.,Zuo，Chunyan.,Wen，Peng.,...&Qiu，Yejun.(2021).Iron-facilitated surface reconstruction to in-situ generate nickel–iron oxyhydroxide on self-supported FeNi alloy fiber paper for efficient oxygen evolution reaction.APPLIED CATALYSIS B-ENVIRONMENTAL,286.

Zhang，Gaowei,et al."Iron-facilitated surface reconstruction to in-situ generate nickel–iron oxyhydroxide on self-supported FeNi alloy fiber paper for efficient oxygen evolution reaction".APPLIED CATALYSIS B-ENVIRONMENTAL 286(2021).