CoS2–MnS@Carbon nanoparticles derived from metal–organic framework as a promising anode for lithium-ion batteries
CoS2–MnS@Carbon nanoparticles derived from metal–organic framework as a promising anode for lithium-ion batteries
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DOI：
10.1016/j.jallcom.2020.157315
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发表时间：
2021-02
影响因子：
6.2
通讯作者：
Jie Zheng;Changjian He;Xiaochun Li;Ke Wang;Tian Wang;Ruo-xi Zhang;B. Tang;Y. Rui
中科院分区：
文献类型：
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作者：
Jie Zheng;Changjian He;Xiaochun Li;Ke Wang;Tian Wang;Ruo-xi Zhang;B. Tang;Y. Rui
过渡金属硫化物材料（TMS）具有出色的速率稳定性和理想的能量密度，已成为锂离子电池（LIB）有前途的负极材料。然而，低电导率和严重的体积变化，在充放电过程中总是导致严重的容量衰减。在这项工作中，我们报告了一种方便快捷的策略，通过使用 Co-Mn 基金属有机框架（Co-Mn MOF）作为前体来制备 MOF 衍生的 CoS2-MnS 纳米颗粒。此外，通过引入碳基材料，成功合成了CoS2–MnS/C（对苯二甲酸，PTA）、CoS2–MnS@CNT（碳纳米管）和CoS2–MnS@rGO（还原氧化石墨烯）电极材料。受益于CoS2-MnS与不同碳之间的协同作用，CoS2-MnS@碳电极材料表现出优异的倍率性能和循环稳定性。 CoS2–MnS@rGO 复合材料具有出色的倍率性能（100 mA g−1 时为 1620 mA h g−1）和高可逆容量（100 次循环后分别为 100 mA g−1 和 1000 mA g−1 时为 1327 mA h g−1 和 927 mA h g−1）。由于其高循环性能和优异的储锂性能，CoS2-MnS@rGO可被认为是一种有前途的锂离子电池负极材料。
Transition metal sulfide materials (TMSs) with remarkable rate stability and desirable energy density have become the promising anode materials for lithium-ion batteries (LIBs). However, the low electrical conductivity and severe volume variation, always result in serious capacity decay during the charge-discharge process. In this work, we report a convenient and facile strategy to prepare MOFs-derived CoS2–MnS nanoparticles by using Co–Mn-based metal-organic frameworks (Co–Mn MOFs) as a precursor. In addition, CoS2–MnS/C (terephthalic acid, PTA), CoS2–MnS@CNT (carbon nanotubes) and CoS2–MnS@rGO (reduced graphene oxide) electrode materials are successfully synthesized by introducing carbon matrix materials. Benefiting from the synergistic between CoS2–MnS and the different carbon, CoS2–MnS@carbon electrode materials display excellent rate capability and cycle stability. The CoS2–MnS@rGO composites offer outstanding rate performance (1620 mA h g−1at 100 mA g−1) and high reversible capacity (1327 and 927 mA h g−1at 100 and 1000 mA g−1, respectively, after 100 cycles). Because of its high cycle performance and excellent lithium storage performance, the CoS2–MnS@rGO can be considered as a promising anode material for lithium-ion batteries.