期刊
SOLID STATE IONICS
卷 329, 期 -, 页码 8-14出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ssi.2018.11.001
关键词
In2S3; Nanosheet; Fiber; Nanocomposite; Anode
资金
- National Natural Science Foundation of China [51602167, 21601098]
- Shandong Provincial Science Foundation [ZR2016EMB07, ZR2017JL021]
- Key Research and Development Program [2018GGX102033]
- Qingdao Applied Fundamental Research Project [16-5-1-92-jch, 17-1-1-81-jch]
- Distinguished Taishan Scholar Project
Metal sulfides are interesting materials for utilization as anodes in Li-ion Batteries (LIBs). However, the poor conductivity and huge volume change during the discharge/charge cycles severely limit their potential application. In the present work, a sheet-on-fiber structure of In2S3@N-doped carbon (In2S3@N-Carbon) is designed through a hydrothermal method, and the materials were characterized by methods of scanning electron microscopy, X-ray diffraction and transmission electron microscopy. When applied to LIBs, In2S3@N-Carbon shows better electrochemical performances in comparison to pristine In2S3. In2S3@N-Carbon retains a reversible capacity of 485 mA h g(-1) after 200 cycles at 0.1 A g(-1), which is significantly higher than that (34.6 mA h g(-1)) of pure In2S3. The enhanced electrochemical properties of In2S3@N-Carbon nanocomposite are attributed to the N-doped carbon fibers, which enhances the conductivity and relaxes the volume expansion of electrodes. This study provides a rational design of nanostructure for high-performance anode materials.
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