Graphene-Like Carbon Film Wrapped Tin (II) Sulfide Nanosheet Arrays on Porous Carbon Fibers with Enhanced Electrochemical Kinetics as High-Performance Li and Na Ion Battery Anodes.
Graphene-Like Carbon Film Wrapped Tin (II) Sulfide Nanosheet Arrays on Porous Carbon Fibers with Enhanced Electrochemical Kinetics as High-Performance Li and Na Ion Battery Anodes.
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多孔碳纤维上的类石墨烯碳膜包裹硫化锡纳米片阵列，具有增强的电化学动力学作为高性能锂和钠离子电池阳极
DOI：
10.1002/advs.201903045
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发表时间：
2020-09
期刊：
影响因子：
--
通讯作者：
Zhu M
中科院分区：
文献类型：
--
作者：
Cui Z;He SA;Liu Q;Guan G;Zhang W;Xu C;Zhu J;Feng P;Hu J;Zou R;Zhu M
SnS是一种很有前途的锂离子电池（LIB）和钠离子电池（SIB）负极材料，但由于其体积变化大和导电性差，循环寿命很差。在这里，使用改进的CVD方法在由Co-，N-改性的多孔碳纤维（CCF@SnS@G）支撑的SnS纳米片阵列的表面上直接生长石墨烯样碳膜。在该策略中，SnS纳米片阵列被限制在包含多孔碳纤维和石墨烯样碳膜的集成碳基质中，表现出极大改善的电化学性能。原位TEM实验表明，垂直方向的类石墨烯碳膜不仅可以很好地保护SnS纳米片不被破坏，提高导电性，而且可以将SnS纳米片转变为超细纳米颗粒，促进电化学动力学。系统的电化学研究表明，CCF@SnS@G电极提供了一个稳定的可逆容量为529 mAh g− 1在高电流密度为5 A g−1的LIB和541.4 mAh g−1在2 A g−1的SIB，这表明它的阳极电极的良好潜力。SnS纳米片阵列夹在含有多孔碳纤维和石墨烯样碳膜的集成碳基质中制备，并提供锂离子和钠离子电池的电化学性能的极大改善。
SnS, is a promising anode material for lithium ion batteries (LIBs) and sodium ion batteries (SIBs), however, undergoes poor cyclic lifespan due to its huge volume changes and bad electroconductivity. Here, a modified CVD method is used to directly grow graphene‐like carbon film on the surface of SnS nanosheet arrays which are supported by Co‐, N‐modified porous carbon fibers (CCF@SnS@G). In the strategy, the SnS nanosheet arrays confined into the integrated carbon matrix containing porous carbon fibers and graphene‐like carbon film, perform a greatly improved electrochemical performance. In situ TEM experiments reveal that the vertical graphene‐like carbon film can not only protect the SnS nanosheet from destruction well and enhance the conductivity, but also transforms SnS nanosheet into ultrafine nanoparticles to promote the electrochemical kinetics. Systematic electrochemical investigations exhibit that the CCF@SnS@G electrode delivers a stable reversible capacity of 529 mAh g−1 at a high current density of 5 A g−1 for LIBs and 541.4 mAh g−1 at 2 A g−1 for SIBs, suggesting its good potential for anode electrodes. SnS nanosheet arrays sandwiched into the integrated carbon matrix containing porous carbon fibers and graphene‐like carbon film are prepared and provide a great improvement in the electrochemical performance of lithium ion and sodium ion batteries.
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影响因子：
41.2
作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
15.1
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影响因子：
32.5
作者：
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通讯作者：
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