MOF-derived uniform Ni nanoparticles encapsulated in carbon nanotubes grafted on rGO nanosheets as bifunctional materials for lithiumion batteries and hydrogen evolution reaction
Yingying Cao a, Yidong Lu a, Edison Huixiang Ang b, Hongbo Geng*c （耿洪波）, Xueqin Cao*a（曹雪琴）, Junwei Zheng d and Hongwei Gu *a（顾宏伟）
a Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215123, China.
b Natural Sciences and Science Education, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore
c School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu, Jiangsu 215500, China.
d College of Physics, Optoelectronic and Energy, Soochow University, Suzhou 215006, China
Nanoscale, 2019, 11, 15112--15119
The rational-design and synthesis of transition-metal compounds with outstanding electrochemical activity and durability for renewable energy systems have attracted tremendous research interest in recent years. Herein, we report a facile and unique strategy to synthesize N-doped carbon nanotube-encapsulated Ni nanoparticles on reduced graphene oxide (Ni@NC-rGO). The optimized nanostructure determines the synergetic effects among the Ni nanoparticles, N-doped CNTs and graphene nanosheets, thus resulting in extraordinary electrochemical performances. When applied as an anode for lithium-ion batteries (LIBs), the Ni@NC-rGO electrode displayed high reversible capacity, stable cycling performance and superior rate capability. Moreover, the resulting Ni@NC-rGO nanocomposites exhibited low overpotential and considerable durability for the hydrogen evolution reaction (HER). Our study may provide a feasible methodology for the preparation of high-performance nanostructured materials for practical energy storage and conversion applications.
链接：https://pubs.rsc.org/en/content/articlelanding/2019/NR/C9NR05504E#!divAbstract