Jing Zhang, Junjie Dong, Zhaolong Li, Jin Zhang, Zhiyuan Ma
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引用次数: 0
摘要
过渡金属硅酸盐氢氧化物（NFSO）是碱性环境下电催化析氧反应（OER）的稳定催化剂。然而，它们的催化活性并不令人满意。在这项工作中，我们报道了用简单的共沉淀法合成非晶Ni-Fe-Si-B-O （NFSO-Bx）纳米片催化剂的高OER性能。与传统NFSO相比，B的加入改变了NFSO的电子结构，显著增强了其活性。最佳样品NFSO- b1在10 mA cm−2下的过电位为255 mV，比未添加的NFSO低69 mV，并且在24 h的时间电位测定测试和1000 CV循环中耐用。更重要的是，NFSO-B1催化剂的OER活性优于NiFe-LDH和基准商用RuO2催化剂，显示出巨大的商业应用潜力。
Amorphous Ni-Fe-Si-B-O Nanosheets for Efficient Electrocatalytic Oxygen Evolution Reaction
Transition metal silicate hydroxides (NFSO) have shown to be stable catalysts for electrocatalytic oxygen evolution reaction (OER) in alkaline environments. However, their catalytic activity is not satisfactory. In this work, we report the high OER performance of amorphous Ni-Fe-Si-B-O (NFSO-Bx) nanosheets catalyst synthesized by a simple coprecipitation method. Compared to traditional NFSO, the incorporation of B changes the electronic structure of NFSO and significantly enhances its activity. The optimum sample NFSO-B1 exhibits an overpotential of 255 mV at 10 mA cm− 2, which is 69 mV lower than that of undoped NFSO, and it is durable against 24 h of chronopotentiometry test and 1000 CV cycles. More importantly, the NFSO-B1 catalyst outperforms NiFe-LDH and the benchmark commercial RuO2 catalysts in OER activity, demonstrating great potential for commercial application.
期刊介绍：
Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.
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