Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Wuhan National Laboratory for Optoelectronics, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan, 430074, China.
Institute for Advanced Study, Nanchang University, 999 Xuefu Road, Nanchang, China.
Nat Commun. 2020 Oct 8;11(1):5075. doi: 10.1038/s41467-020-18891-x.
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.
镍铁复合材料在催化氧气析出方面具有高效率。在这里，我们开发了一种微生物腐蚀方法来构建镍铁氢氧化物。厌氧硫酸盐还原菌以硫酸盐作为电子受体，在形成铁硫化物修饰的镍铁氢氧化物方面发挥了重要作用，这种氢氧化物对氧气析出具有优异的电催化性能。实验和理论研究表明，氢氧化物和硫化物之间的协同效应是其高活性的原因。这种微生物腐蚀策略不仅提供了高效的电催化剂候选物，还架起了传统腐蚀工程和新兴电化学能源技术之间的桥梁。
