Preparation of nickel-iron hydroxides by microorganism corrosion for efficient oxygen evolution

Huan Yang, Lanqian Gong, Hongming Wang, Chungli Dong, Junlei Wang, Kai Qi, Hongfang Liu, Xingpeng Guo and Bao Yu Xia ()
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Huan Yang: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST)
Lanqian Gong: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST)
Hongming Wang: Nanchang University
Chungli Dong: Tamkang University
Junlei Wang: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST)
Kai Qi: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST)
Hongfang Liu: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST)
Xingpeng Guo: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST)
Bao Yu Xia: School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST)

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Nickel–iron composites are efficient in catalyzing oxygen evolution. Here, we develop a microorganism corrosion approach to construct nickel–iron hydroxides. The anaerobic sulfate-reducing bacteria, using sulfate as the electron acceptor, play a significant role in the formation of iron sulfide decorated nickel–iron hydroxides, which exhibit excellent electrocatalytic performance for oxygen evolution. Experimental and theoretical investigations suggest that the synergistic effect between oxyhydroxides and sulfide species accounts for the high activity. This microorganism corrosion strategy not only provides efficient candidate electrocatalysts but also bridges traditional corrosion engineering and emerging electrochemical energy technologies.

Date: 2020
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DOI: 10.1038/s41467-020-18891-x

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