title: Vanadium nanobelts coated nickel foam 3D bifunctional electrode with excellent catalytic activity and stability for water electrolysis.
abstract: Pursuit of highly active, stable and low-cost electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is the key point for large-scale water splitting. A vanadium nanobelts coating on a nickel foam (V/NF) is proposed as an excellent 3D bifunctional electrode for water electrolysis here, which exhibits high activities with overpotentials of 292 and 176 mV at 10 mA cm(-2) for OER and HER, respectively. When employed as a bifunctional electrocatalyst in an alkaline water electrolyzer, a cell voltage of 1.80 V was required to achieve 20 mA cm(-2) with a slight increase during a 24 h durability test. The existence of the appropriate amount of nitrogen and oxygen elements in the surface region of vanadium nanobelts is regarded to be responsible for the electrocatalytic activity.
authors.affiliation: School of Sciences, Beijing Jiaotong University, No. 3 Shangyuancun, Haidian District, Beijing, 100044, P. R. China. dkjian@bjtu.edu.cn.
authors.forename: Yu
authors.initials: Y
authors.lastname: Yu
authors.affiliation: School of Sciences, Beijing Jiaotong University, No. 3 Shangyuancun, Haidian District, Beijing, 100044, P. R. China. dkjian@bjtu.edu.cn.
authors.forename: Pei
authors.initials: P
authors.lastname: Li
authors.affiliation: School of Sciences, Beijing Jiaotong University, No. 3 Shangyuancun, Haidian District, Beijing, 100044, P. R. China. dkjian@bjtu.edu.cn.
authors.forename: Xiaofang
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Sciences, Beijing Jiaotong University, No. 3 Shangyuancun, Haidian District, Beijing, 100044, P. R. China. dkjian@bjtu.edu.cn.
authors.forename: Wenyu
authors.initials: W
authors.lastname: Gao
authors.affiliation: School of Sciences, Beijing Jiaotong University, No. 3 Shangyuancun, Haidian District, Beijing, 100044, P. R. China. dkjian@bjtu.edu.cn.
authors.forename: Zongxu
authors.initials: Z
authors.lastname: Shen
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 10009, P. R. China. wsong@iccas.ac.cn.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 10009, P. R. China. wsong@iccas.ac.cn.
authors.forename: Shuliang
authors.initials: S
authors.lastname: Yang
authors.affiliation: Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing, 10009, P. R. China. wsong@iccas.ac.cn.
authors.forename: Weiguo
authors.initials: W
authors.lastname: Song
authors.affiliation: School of Sciences, Beijing Jiaotong University, No. 3 Shangyuancun, Haidian District, Beijing, 100044, P. R. China. dkjian@bjtu.edu.cn.
authors.forename: Kejian
authors.initials: K
authors.lastname: Ding