Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 39, Pages 15041-15048Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta06692e
Keywords
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Funding
- National Thousand Young Talents Program of China
- Young Scientists Project of National Basic Research Program of China (973 Program) [2015CB659300]
- National Natural Science Foundation of China (NSFC) [21403105, 21573108]
- China Postdoctoral Science Foundation [2015M581769, 2015M580413, 2015M581775, 2015M580408]
- Jiangsu Province Science Foundation for Youths [BK20150571, BK20150583]
- Fundamental Research Funds for the Central Universities
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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To alleviate the capacity degradation of conventional anode materials caused by serious volume expansion and particle aggregation for lithium-ion batteries (LIBs), considerable attention has been devoted to the rational design and synthesis of novel anode architectures. Herein, we report an effective fabrication strategy to implant well-distributed carbide nanoparticles into spherical porous carbon frameworks to form pitaya-like microspheres. Benefiting from their unique components and architecture features, the as-synthesized pitaya-like microspheres can effectively buffer the volume change and prevent aggregation of Co3ZnC nanoparticles during the charge/discharge processes of LIBs. The porous carbon framework provides an unhindered pathway for electron transport and Li+ diffusion and restricts the thin solid-electrolyte interphase (SEI) layer to the outer surface of carbon outer-shells. In LIBs, the anodes deliver a high capacity of 608 mA h g(-1) at 100 mA g(-1) after 300 charge/discharge cycles and ultrahigh cyclic stability and rate performance with a capacity of 423 mA h g(-1) even after 1150 consecutive cycles at 1000 mA g(-1).
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