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Nano Research

Article Title

Amorphous MoS2 confined in nitrogen-doped porous carbon for improved electrocatalytic stability toward hydrogen evolution reaction

Authors

Shaojie Lu, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Wenjing Wang, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Shengshuang Yang, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Wei Chen, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Zhongbin Zhuang, State Key Lab of OrganicInorganic Composites and Beijing Advanced Innovation Center for Soft Matter Science and Engineering,Beijing University of Chemical Technology, Beijing 100029, China
Wenjing Tang, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Caihong He, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Jiajing Qian, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Dekun Ma, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Yun Yang, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
Shaoming Huang, Key Laboratory of Carbon Materials of Zhejiang Province, College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China

Keywords

MoS2, amorphous, N-doped CMK-3, hydrogen evolution reaction (HER), stability

Abstract

Developing non-precious metal catalysts with high activity and stability for electrochemical hydrogen evolution reaction (HER) is of great significance in both science and technology. In this work, N-doped CMK-3, which was prepared with a casting method using SBA-15 as the hard template and ammonia as the nitrogen source, has been utilized to hold MoS2 and restrict its growth to form MoS2@N-CMK-3 composite. As a result, MoS2 was found to have poorly crystallized and the limited space of porous N-CMK-3 made its size much small. Then there are more active sites in MoS2. Accordingly, MoS2@N-CMK-3 has exhibited good electrocatalytic performance toward HER in acids with a quite small Tafel slope of 32 mV·dec−1. And more importantly, compared to MoS2@CMK-3, its stability has been greatly improved, which can be attributed to the interaction between MoS2 and nitrogen atoms avoiding aggregation and mass loss. This work provides an idea that doping a porous carbon support with nitrogen is an effective way to enhance the stability of the catalyst.

Graphical Abstract

Publisher

Tsinghua University Press

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