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- 2015
钠离子电池Na2MnSiO4正极材料的合成、结构及其电化学性能研究
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Abstract:
摘要 首次采用溶胶-凝胶法制备Na2MnSiO4/C纳米复合正极材料. X射线衍射（XRD）和Rietveld结构精修结果表明,合成的Na2MnSiO4材料为单斜晶系、Pn空间群. 红外光谱（FTIR）结果证实材料中不含有Na2SiO3和SiO2等杂质. 电化学测试结果表明，该材料在1 mol·L-1 NaClO4/PC电解液中，电流密度为14 mA·g-1、电压范围为1.5 ~4.2 V（vs. Na+/Na）测试条件下，其首次可逆放电比容量高达113 mAh·g-1
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