Mo-doped Li2MnSiO4/C nanocomposite synthesized by citric acid-assisted sol-gel method with enhanced electrochemical properties

Mo-doped Li2MnSiO4/C nanocomposite synthesized by citric acid-assisted sol-gel method with enhanced electrochemical properties
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柠檬酸辅助溶胶-凝胶法合成Mo掺杂Li2MnSiO4/C纳米复合材料,具有增强的电化学性能

DOI:
10.1016/j.matlet.2014.10.029
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发表时间:
2015-01
期刊:
影响因子:
3
通讯作者:
Qunjie Xu
Qunjie Xu
中科院分区:
材料科学3区
文献类型:
--
作者:
Chunyan Lai;Zhen Wang;Qunjie Xu

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采用柠檬酸辅助溶胶-凝胶法成功制备了Mo 6+掺杂的Li 2 MnSiO 4/C纳米复合材料。选择(NH 4)6 Mo 7 O24·4 H2O作为Mo 6+的来源。XRD分析表明,Mo离子掺杂的Li 2 MnSiO 4/C纳米复合材料中MnO杂质较少,电子传递电阻较低,比容量较高。特别是掺杂6wt%Mo6+的Li 2 MnSiO 4/C纳米复合材料在0.05C和0.1C的放电容量分别为207.3mAh/g和199.7mAh/g。
Li2MnSiO4/C nanocomposite doped with Mo6+ion was successfully synthesized by a citric acid-assisted sol-gel method. (NH4)6Mo7O24·4H2O was selected to act as the source of Mo6+. The Li2MnSiO4/C nanocomposite samples doped with Mo ion have less MnO impurity in the results of XRD patterns, showing lower electronic transfer resistance and higher specific capacity than undoped Li2MnSiO4/C material. Especially, the Li2MnSiO4/C nanocomposite doped with 6 wt% Mo6+shows a discharge capacity of 207.3 mAh/g at 0.05 C and 199.7 mAh/g at 0.1 C.
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