Constructing nickel-iron oxyhydroxides integrated with iron oxides by microorganism corrosion for oxygen evolution

doi:10.1073/pnas.2202812119

淡江大學機構典藏 > 工學院 > 電機工程學系暨研究所 > 期刊論文 > Item 987654321/124069

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Title:	Constructing nickel-iron oxyhydroxides integrated with iron oxides by microorganism corrosion for oxygen evolution
Authors:	Yang, H.;Dong, C. L.;Wang, H.;Qi, R.;Gong, L.;Lu, Y. R.;He, C.;Chen, S.;You, B.;Liu, H.;Tao, J.;Jiang, X.;Guo, X.;Xia, B.
Date:	2022-05-09
Issue Date:	2023-05-12 12:08:24 (UTC+8)
Publisher:	United States National Academy of Sciences
Abstract:	Developing facile approaches for preparing efficient electrocatalysts is of significance to promote sustainable energy technologies. Here, we report a facile iron-oxidizing bacteria corrosion approach to construct a composite electrocatalyst of nickel–iron oxyhydroxides combined with iron oxides. The obtained electrocatalyst shows improved electrocatalytic activity and stability for oxygen evolution, with an overpotential of ∼230 mV to afford the current density of 10 mA cm−2. The incorporation of iron oxides produced by iron-oxidizing bacteria corrosion optimizes the electronic structure of nickel–iron oxyhydroxide electrodes, which accounts for the decreased free energy of oxygenate generation and the improvement of OER activity. This work demonstrates a natural bacterial corrosion approach for the facile preparation of efficient electrodes for water oxidation, which may provide interesting insights in the multidisciplinary integration of innovative nanomaterials and emerging energy technologies.
Relation:	Proceedings of the National Academy of Sciences 119(20), e2202812119
DOI:	10.1073/pnas.2202812119
Appears in Collections:	[電機工程學系暨研究所] 期刊論文

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