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Hierarchical N‐Doped HMCN/CNT Hybrid Carbon Frameworks Assembling Cobalt Selenide Nanoparticles for Advanced Properties of Lithium/Sodium Storage
Author(s) -
Zhou Kehan,
Han Yue,
Tang Dongmei,
Wu Huayu,
Wu Xiaoyu,
Diao Guowang,
Li Haibo,
Chen Ming
Publication year - 2020
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201901699
Subject(s) - materials science , zeolitic imidazolate framework , lithium (medication) , anode , carbon nanotube , nanoparticle , chemical engineering , nanocomposite , carbon fibers , mesoporous material , nanotechnology , cobalt , nanoreactor , composite number , electrode , catalysis , adsorption , metal organic framework , composite material , organic chemistry , metallurgy , chemistry , medicine , engineering , endocrinology
A hybrid nanostructure with Co 0.85 Se nanoparticles anchored in nitrogen‐doped hollow mesoporous carbon nanospheres/carbon nanotubes (Co 0.85 Se/N‐HMCNs/CNTs) is elaborately fabricated by a pyrolysis–reduction–selenization strategy derived from yolk–shell zeolitic imidazolate framework‐67 (ZIF‐67)@HMCNs, which are synthesized by the confined growth of ZIF‐67 inside HMCNs regarded as nanoreactors. Benefitting from the robust hollow carbon frameworks made of nitrogen‐doped hollow mesoporous carbon nanospheres, carbon nanotubes, and highly active Co 0.85 Se ultrafine nanoparticles, the as‐prepared nanocomposites show greatly enhanced lithium/sodium storage properties. When the Co 0.85 Se/N‐HMCNs/CNTs are applied to lithium‐ion batteries as anode materials, the advanced nanocomposite delivers excellent cycling stability (286 and 153 mA h g −1 at 10 A g −1 after 5000 and 10 000 cycles) and high rate performance (501 mA h g −1 at 5 A g −1 ). When the Co 0.85 Se/N‐HMCNs/CNTs are applied to sodium‐ion batteries as anode materials, the material realizes better cycling performance (102 mA h g −1 at 1 A g −1 after 1000 cycles) and excellent rate performance (132 mA h g −1 at 5 A g −1 ).