title: A hierarchical Ni-Co-O@Ni-Co-S nanoarray as an advanced oxygen evolution reaction electrode.
abstract: Developing an efficient electro-catalyst for water oxidation is essential for improving the performance, which holds the key for a number of energy conversion and storage devices. Here we report an effective method for fabricating a Ni-Co-O@Ni-Co-S hierarchical nanoarray, which showed a significantly improved activity relative to Ni-Co-O nanowire arrays for oxygen evolution reactions. The enhanced performance was attributed to the secondary formed Ni-Co-S nanoplatelets which not only acted as efficient electrocatalysts, but also facilitated the electrolyte penetration and increased the surface area.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China. sunxm@mail.buct.edu.cn.
authors.forename: Wenwen
authors.initials: W
authors.lastname: Xu
authors.forename: Zhiyi
authors.initials: Z
authors.lastname: Lu
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Lei
authors.forename: Yaping
authors.initials: Y
authors.lastname: Li
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Sun