康振辉教授课题组在J. Mater. Chem. A上发表论文

题目：

Mesoporous nitrogen, sulfur co-doped carbondots/CoS hybrid as an efficient electrocatalyst forhydrogen evolution†

作者：

Liping Wang, Xiuqin Wu, Sijie Guo, Mumei Han, Yunjie Zhou, Yue Sun, Hui Huang,*Yang Liu* and Zhenhui Kang

单位：

Institute of Functional Nano & So Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, P. R.China. E-mail: yangl@suda.edu.cn; hhuang0618@suda.edu.cn

摘要：

Hydrogen is an ideal energy carrier for renewable energy, but a high overpotential is required to achievereasonable H₂ evolution, which makes the design of highly active electrocatalysts for hydrogen evolutionreaction (HER) urgent. Here, we report a nitrogen, sulfur co-doped carbon dots (NSCDs)/CoS hybrid witha three-dimensional mesoporous sponge-like nanostructure, fabricated via heat-treatment, which aselectrocatalyst exhibits the desired electrocatalytic activity for electrochemical HER. A series of NSCDs/CoS hybrids with different contents of NSCDs were prepared by adjusting the concentration of NSCDs,of which the NSCDs/CoS hybrid with 20 mg L^-1 NSCDs exhibits the best electrocatalytic activity towardsHER with an onset potential of 0.095 V, an overpotential at 10 mA cm^-2 of 165 mV, a **all Tafel slope of 56 mV per decade, and a good stability in 0.5 M H₂SO₄. The excellent electrocatalytic activity ofNSCDs/CoS for HER is attributed to synergetic effects of NSCDs and CoS, in which the NSCDs could protect the CoS from dissolution/agglomeration under acidic conditions, and the increased surface areaof the NSCDs/CoS hybrid and the high charge transfer efficiency between NSCDs and CoS via Co–S–Cbonding enhanced the HER performance.

影响因子：

8.262

分区情况：

1区

链接：  

http://pubs.rsc.org/en/content/articlelanding/2016/tc/c6tc02313d#!divAbstract