文献类型：期刊文献

英文题名：High OER performance Ni(OH)2 with hierarchical structure

作者：Shao, Danmin[1];Li, Pengwei[1];Wang, Deqiang[1];Zhao, Chongjun[1];Zhao, Chunhua[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2019

卷号：23

期号：7

起止页码：2051

外文期刊名：JOURNAL OF SOLID STATE ELECTROCHEMISTRY

收录：;EI(收录号：20192807170647);WOS:【SCI-EXPANDED(收录号:WOS:000474477800010)】；

基金：This study was financially supported by the National Natural Science Foundation of China (51502092), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning (TP2015028), Shanghai Alliance Plan (Nos. LM201881, LM201751), Shanghai Natural Science Foundation (No. 13ZR1411900), Shanghai Key Laboratory Project (08DZ2230500), and Shanghai Leading Academic Discipline Project (B502).

语种：英文

外文关键词：Ni(OH)(2); Reduced graphene oxide; Hierarchical structure; OER

摘要：A stable, efficient, and low-cost oxygen evolution reaction catalyst is very momentous to deal with energy crisis and achieve sustainable energy conversion and storage. Herein, the composite of Ni(OH)(2) and reduced graphene oxide were obtained by a hydrothermal method at a high temperature and high pressure in a one-step hydrothermal process. SEM images showed that a multilayer sandwich structure with reduced graphene oxide in the middle of two layers of Ni(OH)(2) was achieved for the electrode. This unique hierarchical catalyst exhibited remarkable oxygen evolution reaction (OER) electrochemical activity in 1 M KOH media: a 313-mV overpotential at 10 mA cm(-2), a small Tafel slope of 46 mV dec(-1), and excellent stability for a 22-h chronopotentiometry test. In addition, the overpotential of our catalyst is much lower than that of RuO2, i.e., 20 mV lower at 50 mA cm(-2). This work demonstrates a new type of excellent OER catalyst with a hierarchical structure.