Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 10, Issue 16, Pages 13598-13605Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b02504
Keywords
lithium-sulfur battery; bamboo; porous graphitic carbon fiber; Ni nanoparticle; electrochemical property
Funding
- National Natural Science Foundation of China [51502263, 51728204]
- program for Innovative Research Team in University of Ministry of Education of China [IRT13037]
- Fundamental Research Funds for the Central Universities [2015XZZX010-02]
- Qianjiang Talents Plan D [QJD1602029]
- Startup Foundation for Hundred-Talent Program of Zhejiang University
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Lithium-sulfur batteries (LSBs) are deemed to be among the most prospective next-generation advanced high-energy batteries. Advanced cathode materials fabricated from biological carbon are becoming more popular due to their unique properties. Inspired by the fibrous structure of bamboo, herein we put forward a smart strategy to convert bamboo sticks for barbecue into uniform bamboo carbon fibers (BCF) via a simple hydrothermal treatment proceeded in alkaline solution. Then NiCl2 is used to etch the fibers through a heat treatment to achieve Ni-embedded porous graphitic carbon fibers (PGCF/Ni) for LSBs. The designed PGCF/Ni/S electrode exhibits improved electrochemical performances including high initial capacity (1198 mAh g(-1) at 0.2 C), prolonged cycling life (1030 mAh g(-1) at 0.2 C after 200 cycles), and improved rate capability. The excellent properties are attributed to the synergistic effect of 3D porous graphitic carbon fibers with highly conductive Ni nanoparticles embedded.
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