TY  - JOUR
AU  - Li, Haoquan
AU  - Chen, Long
AU  - Jin, Pengfei
AU  - Li, Yafei
AU  - Pang, Jianxiang
AU  - Hou, Juan
AU  - Peng, Shanglong
AU  - Wang, Gang
AU  - Shi, Yulin
PY  - 2022
TI  - NiCo2S4 microspheres grown on N, S co-doped reduced graphene oxide as an efficient bifunctional electrocatalyst for overall water splitting in alkaline and neutral pH
JO  - Nano Research
SN  - 1998-0124
SP  - 950
EP  - 958
VL  - 15
IS  - 2
AB  - It is of vital importance to design efficient and low-cost bifunctional catalysts for the electrochemical water splitting under alkaline and neutral pH conditions. In this work, we report an efficient and stable NiCo2S4/N, S co-doped reduced graphene oxide (NCS/NS-rGO) electrocatalyst for water splitting, in which NCS microspheres are composed of one-dimentional (1D) nanorods grown homogeneously on the surface of NS-rGOs). The synergetic effect, abundant active sites, and hybridization of NCS/NS-rGO endow their outstanding electrocatalytic performance for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in both alkaline and neutral conditions. Furthermore, NCS/NS-rGO employed as both anode and cathode in a two-electrode alkaline and neutral system electrolyzers deliver 10 mA/cm2 with the low cell voltage of 1.58 V in alkaline and 1.91 V in neutral condition. These results illustrate the rational design of carbon-supported nickel-cobalt based bifunctional materials for practical water splitting over a wide pH range.
UR  - https://doi.org/10.1007/s12274-021-3580-z
DO  - 10.1007/s12274-021-3580-z