具有金属有机框架衍生涂层的中空多壳结构用于增强锂存储
Hollow Multi-Shelled Structure with Metal-Organic-Framework-Derived Coatings for Enhanced Lithium Storage.
作者信息
Zhang Jian, Wan Jiawei, Wang Jiangyan, Ren Hao, Yu Ranbo, Gu Lin, Liu Yunling, Feng Shouhua, Wang Dan
机构信息
State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, North 2nd Street, Zhongguancun, Haidian District, Beijing, 100190, P. R. China.
State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China.
出版信息
Angew Chem Int Ed Engl. 2019 Apr 8;58(16):5266-5271. doi: 10.1002/anie.201814563. Epub 2019 Mar 12.
Herein, we present heterogeneous hollow multi-shelled structures (HoMSs) prepared by exploiting the properties of the metal-organic framework (MOFs) casing. Through accurately controlling the transformation of MOF layer into different heterogeneous casings, we can precisely design HoMSs of SnO @Fe O (MOF) and SnO @FeO -C(MOF), which not only retain properties of the original SnO -HoMSs, but also structural information from the MOFs. Tested as anode materials in LIBs, SnO @Fe O (MOF)-HoMSs demonstrate superior lithium-storage capacity and cycling stability to the original SnO -HoMSs, which can be attributed to the topological features from the MOF casing. Making a sharp contrast to the electrodes of SnO @Fe O (particle)-HoMSs fabricated by hydrothermal method, the capacity retention after 100 cycles for the SnO @Fe O (MOF)-HoMSs is about eight times higher than that of the SnO @Fe O (particle)-HoMS.
在此，我们展示了利用金属有机框架（MOF）外壳的特性制备的异质中空多壳结构（HoMSs）。通过精确控制MOF层向不同异质外壳的转变，我们可以精确设计SnO @Fe O (MOF)和SnO @FeO -C(MOF)的HoMSs，它们不仅保留了原始SnO -HoMSs的特性，还保留了来自MOF的结构信息。作为锂离子电池的负极材料进行测试时，SnO @Fe O (MOF)-HoMSs表现出比原始SnO -HoMSs更高的储锂容量和循环稳定性，这可归因于MOF外壳的拓扑特征。与通过水热法制备的SnO @Fe O (颗粒)-HoMSs电极形成鲜明对比的是，SnO @Fe O (MOF)-HoMSs在100次循环后的容量保持率比SnO @Fe O (颗粒)-HoMS高约八倍。
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