title: Efficient Overall Water-Splitting Electrocatalysis Using Lepidocrocite VOOH Hollow Nanospheres.
abstract: Herein we report the control synthesis of lepidocrocite VOOH hollow nanospheres and further their applications in electrocatalytic water splitting for the first time. By tuning the surface area of the nanospheres, the optimal performance can be achieved with low overpotentials of 270 mV for the oxygen evolution reaction (OER) and 164 mV for the hydrogen evolution reaction (HER) at 10 mA cm-2in 1 m KOH, respectively. Furthermore, when used as both the anode and cathode for overall water splitting, a low cell voltage of 1.62 V is required to reach the current density of 10 mA cm-2, making the VOOH hollow nanospheres an efficient alternative to water splitting.
authors.affiliation: College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
authors.forename: Huanhuan
authors.initials: H
authors.lastname: Shi
authors.affiliation: College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.|Materials Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia.
authors.forename: Hanfeng
authors.initials: H
authors.lastname: Liang
authors.affiliation: College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
authors.forename: Fangwang
authors.initials: F
authors.lastname: Ming
authors.affiliation: College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
authors.forename: Zhoucheng
authors.initials: Z
authors.lastname: Wang
keywords: electrocatalysis; hollow nanostructures; hydrogen evolution reaction; oxide/hydroxide materials; oxygen evolution reaction