Construction of hierarchical MoSe2@C hollow nanospheres for efficient lithium/sodium ion storage,Inorganic Chemistry Frontiers

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Construction of hierarchical MoSe2@C hollow nanospheres for efficient lithium/sodium ion storage
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2020-03-02 , DOI: 10.1039/d0qi00017e
Xueqian Zhang _{1,

2,

3,

4} , Yali Xiong _{1,

2,

3,

4} , Mengfei Dong _{1,

2,

3,

4} , Zhiguo Hou _{1,

2,

3,

4} , Yitai Qian _{4,

5,

6,

7}

Affiliation

MoSe₂ has been recognized as a promising anode material for lithium/sodium ion batteries due to its unique structure and material properties. Here, hierarchical MoSe₂@C hollow nanospheres (MoSe₂@C HNSs) assembled with ultrathin nanosheets are prepared via a facile solvothermal method. The MoSe₂@C HNS composite is fabricated by an anion-exchange reaction from Mo-glycerate solid spheres combining with the carbonization of glucose. When used as an anode material for LIBs, the MoSe₂@C HNS composite manifests a reversible capacity of 711 mA h g⁻¹ after 300 cycles under a current density of 500 mA g⁻¹. When evaluated as an anode material for SIBs, the MoSe₂@C HNS composite delivers a high capacity of 683 mA h g⁻¹ at 100 mA g⁻¹ and maintains a capacity of 458 mA h g⁻¹ after 200 cycles at 200 mA g⁻¹. The efficient lithium and sodium ion storage performance should be ascribed to the unique hierarchical hollow nanostructure and synchronously incorporated carbon material.

中文翻译：

构建高效的锂/钠离子分级MoSe2 @ C空心纳米球

MoSe ₂由于其独特的结构和材料特性而被公认为是锂/钠离子电池的有希望的负极材料。在这里，通过方便的溶剂热法制备了组装有超薄纳米片的分级MoSe ₂ @C空心纳米球（MoSe ₂ @C HNSs）。MoSe ₂ @C HNS复合材料是由Mo-甘油酸酯固体球与葡萄糖的碳化作用进行阴离子交换反应制得的。当用作LiBs的阳极材料时，MoSe ₂ @C HNS复合材料在500 mA g ^-1的电流密度下经过300次循环后可显示711 mA hg ^-1的可逆容量。。当用作SIB的阳极材料进行评价，所述摩西₂ @C HNS复合传递683毫安Hg的高容量^-1在100mA克^-1和维护458毫安Hg的容量^-1以200mA克200次循环后^{- 1}。有效的锂和钠离子存储性能应归因于独特的分级空心纳米结构和同步引入的碳材料。

更新日期：2020-04-24

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