@article{Chen2019, 
author = {Yanan Chen and Shaomao Xu and Shuze Zhu and Rohit Jiji Jacob and Glenn Pastel and Yanbin Wang and Yiju Li and Jiaqi Dai and Fengjuan Chen and Hua Xie and Boyang Liu and Yonggang Yao and Lourdes G. Salamanca-Riba and Michael R. Zachariah and Teng Li and Liangbing Hu},
title = {Millisecond synthesis of CoS nanoparticles for highly efficient overall water splitting},
year = {2019},
journal = {Nano Research},
volume = {12},
number = {9},
pages = {2259-2267},
keywords = {ultrafast, high temperature synthesis, graphene, water splitting},
url = {https://www.sciopen.com/article/10.1007/s12274-019-2304-0},
doi = {10.1007/s12274-019-2304-0},
abstract = {High performance and low-cost electrocatalysts for overall water splitting, i.e., catalyzing hydrogen and oxygen evolution reactions with the same material, are of great importance for large-scale, renewable energy conversion processes. Here, we report an ultrafast (~ 7 ms) synthesis technique for transition metal chalcogenide nanoparticles assisted by high temperature treatment. As a proof of concept, we demonstrate that cobalt sulfide (~ 20 nm in diameter)@ few-layer graphene (~ 2 nm in thickness) core-shell nanoparticles embedded in RGO nanosheets exhibit remarkable bifunctional electrocatalytic activity and stability for overall water splitting, which is comparable to commercial 40 wt.% platinum/carbon (Pt/C) electrocatalysts. After 60 h of continuous operation, 10 mA·cm-2 water splitting current density can still be achieved at a low potential of ~ 1.77 V without any activity decay, which is among the most active for non-noble material based electrocatalysts. The presented study provides prospects in synthesizing highly efficient bifunctional electrocatalysts for large-scale energy conversion application via a simple yet efficient technique.}
}