A peapod-inspired MnO@C core-shell design for lithium ion batteries
A peapod-inspired MnO@C core-shell design for lithium ion batteries
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DOI：
10.1016/j.jpowsour.2015.12.125
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发表时间：
2016-03
影响因子：
9.2
通讯作者：
Shengbin Wang;Yalan Xing;Changlei Xiao;Huai-zhe Xu;Shichao Zhang
中科院分区：
文献类型：
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作者：
Shengbin Wang;Yalan Xing;Changlei Xiao;Huai-zhe Xu;Shichao Zhang
受豆荚状结构的启发，制备了具有内部空隙空间的MnO@C杂化材料。在这种仿生结构中，MnO纳米颗粒被分离并限制在导电碳鞘中，该导电碳鞘在锂化/脱锂过程中留下足够的膨胀和收缩空间。这种豆荚状MnO@C可以解决与MnO溶解、粉碎和聚集有关的问题。结果，该样品在高可逆容量、优异的高倍率性能和良好的循环性能方面表现出优异的上级电化学性能。
Inspired by the structure of peapod, MnO@C hybrid with internal void space has been prepared. In this bionic structure, the MnO nanoparticles are separated and confined in a conductive carbon sheath that leaves enough room for expansion and contraction during lithiation/delithiation process. Such peapod-like MnO@C can address the issues related to MnO dissolution, pulverization, and aggregation. As a result, the sample demonstrates superior electrochemical performances in terms of high reversible capacity, excellent high-rate capability, and good cyclability.