阳极
沸石咪唑盐骨架
材料科学
化学工程
纳米颗粒
碳纤维
多孔性
热解
锂(药物)
纳米技术
金属有机骨架
电极
复合材料
化学
复合数
吸附
有机化学
内分泌学
工程类
物理化学
医学
作者
Dachi Yang,Zhen Zhou,Ming Zhong,Xian‐He Bu
出处
期刊:ChemNanoMat
[Wiley]
日期:2017-02-22
卷期号:3 (4): 252-258
被引量:22
标识
DOI:10.1002/cnma.201600371
摘要
Abstract A stable structure is critical for SnO 2 ‐based materials to achieve high performance as anodes for lithium‐ion batteries because of the huge volume change during cycling. Herein, to address this issue, a hybrid of SnO 2 nanoparticles implanted into porous N‐doped carbon frameworks with rich voids was fabricated via facile pyrolysis of a kind of zeolitic imidazolate frameworks, ZIF‐8, and vapor deposition of tetraphenyltin. This rationally designed material could effectively prevent the structural degradation due to the expansion and contraction during cycling, and exhibited remarkable Li storage performance. This anode material delivered a high reversible capacity of 1029.2 mA h g −1 at 100 mA g −1 and 445.0 mA h g −1 at a high rate of 5000 mA g −1 , as well as stable cyclic performance of 667.1 mA h g −1 at 500 mA g −1 after 200 cycles. Importantly, the well‐defined architecture of the hybrid was retained after long charge/discharge cycles.
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