Lu Shuanglong, Wu Junjie, Hu Hongyin, Pan Xingxing, Hu Zhenbin, Li Huining, Zhu Han, Duan Fang, Du Mingliang
Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China.
Nantong Cellulose Fibers Co., LTD, Nantong 226300, Jiangsu, China.
J Colloid Interface Sci. 2021 Mar;585:258-266. doi: 10.1016/j.jcis.2020.11.098. Epub 2020 Nov 28.
Exploring efficient, stable, and earth-abundant electrocatalysts for oxygen evolution reaction (OER) is of great significance for clean and renewable energy conversion technologies. In this work, in situ uniform Ni-doped tungsten carbide (Ni/WC) nanoparticles (~3 nm) on carbon nanofibers (Ni/WC-CNFs) that were to function as efficient OER catalysts were developed. Both the composition and electronic state of tungsten carbide (WC: W-WC-WC) could be regulated through varied Ni coupling. Owing to the synergistic effect between Ni and WC, the reaction kinetics were facilitated, resulting in improved OER activity with low overpotentials of η = 350 mV (modified glassy carbon electrode) and η = 335 mV (self-supporting electrode). This work opens a facile territory for the development of cost-effective and highly promising OER electrocatalysts for use in real life applications.
探索用于析氧反应（OER）的高效、稳定且储量丰富的电催化剂对于清洁和可再生能源转换技术具有重要意义。在这项工作中，开发了一种原位均匀掺杂镍的碳化钨（Ni/WC）纳米颗粒（约3纳米）负载在碳纳米纤维上的材料（Ni/WC-CNFs），其可作为高效的析氧反应催化剂。碳化钨（WC：W-WC-WC）的组成和电子态均可通过不同的镍耦合作用进行调控。由于镍与碳化钨之间的协同效应，促进了反应动力学，从而在低过电位下提高了析氧反应活性，在修饰玻碳电极上的过电位η = 350 mV，在自支撑电极上的过电位η = 335 mV。这项工作为开发具有成本效益且极具前景的用于实际应用的析氧反应电催化剂开辟了一条简便途径。
