1. MoS2 anchored on agar-derived 3D nitrogen-doped porous carbon for electrocatalytic hydrogen evolution reaction and lithium-ion batteries
- Author
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Chunling Cao, Shengkai Liu, Jinxin Fan, Guodong Li, Raul Arenal, Cheng Wang, Wenjiang Li, Fei Xie, National Natural Science Foundation of China, European Commission, National Key Research and Development Program (China), Jilin University, and Open Foundation of Key Laboratory of Resource Biology and Biotechnology in Western China
- Subjects
Renewable Energy, Sustainability and the Environment ,General Environmental Science - Abstract
MoS2 has been explored as a potential material for hydrogen evolution reaction (HER) and lithium-ion batteries (LIBs). However, the limited number of active sites and poor conductivity restrain its applications. Herein, a facile method is reported to construct MoS2 nanosheets (MoS2 NSs) grown on agar-derived 3D nitrogen-doped porous carbon (MoS2-NPC). The as-prepared MoS2-NPC composite exhibits good stability and HER electrocatalytic properties with a low overpotential of 209 mV at 10 mA cm−2 and a small Tafel slope of 41 mV dec−1. Furthermore, as an anode of LIBs, it delivers an initial discharge capacity of 1289 mAh g−1 at 0.1 A g−1 and rate capability of 712 and 419 mAh g−1 at 0.5 and 2.0 A g−1, respectively. This is attributed to the synergistic effects and unique 3D network structure, which avoids the aggregation of MoS2 and results in more exposed active sites. The agar-derived 3D nitrogen-doped porous carbon can act as a support material for MoS2 NSs dispersed on the surface, providing a cheap and efficient strategy to prepare high quality catalysts for electrochemical energy conversion and storage applications., This work was financially supported by the National Natural Science Foundation of China (Nos. U1764254 and 21911530255), 111 Project, China (No. D17003), Graphene Flagship (881603), and the Open Research Fund of the State Key Laboratory of Inorganic Synthesis and Preparative Chemistry (Jilin University, Grant No. 2021-03).
- Published
- 2022