Low-cost CoFe2O4/biomass carbon hybrid from metal-enriched sulfate reducing bacteria as an electrocatalyst for water oxidation |
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| Authors: | Songhu Bi Jingde Li Qin Zhong Chuntan Chen Qiyi Zhang Yongyi Yao |
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| Affiliation: | School of Chemical Engineering, Sichuan University, Chengdu Sichuan 610065 P. R. China.; Textile College, Sichuan University, Chengdu Sichuan 610065 P. R. China ; Chengdu Ketai Tech Co., Ltd, Chengdu Sichuan 610065 P. R. China ; School of Chemistry and Chemical Engineering, Sichuan University of Arts and Science, Dazhou Sichuan 635000 P. R. China |
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| Abstract: | The development of electrocatalysts for the Oxygen Evolution Reaction (OER) requires extensive and challenging research for the water splitting and fuel cell applications. Herein, we report a low-cost CoFe2O4/biomass carbon (CFO@BC/Zn) hybrid from Co-enriched Sulfate Reducing Bacteria (Co-SRB) as an electrocatalyst for OER. The electrocatalyst exhibits a low potential of 1.53 V at a current density 10 mA cm−2 and Tafel slope of 86 mV dec−1. This method does not require high-cost or long periods of preparation. The density-functional theory (DFT) calculations show a small barrier for oxygen conversion on Fe3+ of CFO (100) surface. The synthesis of CFO@BC/Zn may be a new approach for obtaining low-priced electrocatalysts for OER.A low-cost CoFe2O4/biomass carbon (CFO@BC/Zn) hybrid from Co-enriched Sulfate Reducing Bacteria (Co-SRB) as an electrocatalyst for OER. The electrocatalyst exhibits a low potential of 1.53 V at a current density 10 mA cm−2 and Tafel slope of 86 mV dec−1. |
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