【摘要】 采用一种液相反应的方法合成LiV3O8化合物 ,首先由NH3·H2 O ,LiOH与V2 O5反应合成含有Li和V的反应前驱产物 ,然后在 180℃的真空环境中进行干燥处理 ,最后将此物质在 5 80℃温度下煅烧成最终产物。采用热重分析试验分析了反应的机理。X射线衍射结果显示得到的物质与用传统合成方法得到的LiV3O8化合物的结构相比 ,在 (10 0 )方向上的衍射峰强度降低很多。在室温、恒电流为 3A/m2 条件下进行充放电试验 ,在 1.8～4.0V范围内 ,首次放电容量达到 2 30Ah/kg ,15周后仍能达到 2 10Ah/kg。更多还原

【Abstract】 A liquid synthesis method was employed to prepare LiV 3O 8 compound. Firstly, the precursor containing V and Li was made through liquid reaction using NH 3·H 2O, LiOH and V 2O 5 as starting reactants, and then the precursor was calcined to become the resulting product at 580?℃ for 6?h. TGA was used to analysis the reaction mechanism and the X ray diffraction pattern was used to analysis the structure of the production. Charge discharge characteristics of this material were also studied. A specific capacity of 230?Ah/kg is available in the range of 1.8～4.0?V in the first cycle and 210?Ah/kg after 15 cycles. The current density is 3?A/m 2.更多还原