title: A nickel-borate nanoarray: a highly active 3D oxygen-evolving catalyst electrode operating in near-neutral water.
abstract: The exploration of high-performance and cost-effective water oxidation catalysts operating under mild conditions is still urgent and challenging. In this communication, a nickel-borate nanoarray supported on carbon cloth (Ni-Bi/CC) has been fabricated through oxidative polarization of a nickel oxide nanoarray on CC (NiO/CC) in a borate electrolyte (pH 9.2). As a 3D electrode, this Ni-Bi/CC exhibits superior catalytic activity for water oxidation in 0.1 M potassium borate (K-Bi) solution, yielding a geometrical catalytic current density of 10 mA cm-2at an overpotential of 470 mV. Notably, this electrode also demonstrates outstanding long-term electrochemical durability for 25 h with 100% Faradaic efficiency.
authors.affiliation: College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China. sunxp@scu.edu.cn and College of Materials, Qingdao University, Qingdao 266071, China.
authors.forename: Xuqiang
authors.initials: X
authors.lastname: Ji
authors.affiliation: College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China. sunxp@scu.edu.cn and College of Materials, Qingdao University, Qingdao 266071, China.
authors.forename: Liang
authors.initials: L
authors.lastname: Cui
authors.affiliation: College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China. sunxp@scu.edu.cn.
authors.forename: Danni
authors.initials: D
authors.lastname: Liu
authors.affiliation: College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China. sunxp@scu.edu.cn.
authors.forename: Shuai
authors.initials: S
authors.lastname: Hao
authors.affiliation: College of Materials, Qingdao University, Qingdao 266071, China.
authors.forename: Jingquan
authors.identifier: http://orcid.org/0000-0001-6178-8661
authors.initials: J
authors.lastname: Liu
authors.affiliation: College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China. fengliquhn@hotmail.com.
authors.forename: Fengli
authors.initials: F
authors.lastname: Qu
authors.affiliation: Analytical and Test Center, Southwest University of Science and Technology, Mianyang 621010, China.
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Ma
authors.affiliation: Chengdu Institute of Geology and Mineral Resources, Chengdu 610064, China.
authors.forename: Gu
authors.initials: G
authors.lastname: Du
authors.affiliation: College of Chemical and Environ Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
authors.forename: Abdullah M
authors.identifier: http://orcid.org/0000-0001-7905-3209
authors.initials: AM
authors.lastname: Asiri
authors.affiliation: College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China. sunxp@scu.edu.cn.
authors.forename: Xuping
authors.identifier: http://orcid.org/0000-0001-5034-1135
authors.initials: X
authors.lastname: Sun