【摘要】 采用氨解法制备了SnO,Sb2O3,GeO23种氧化物粉末,将其分别作为锂离子电池负极材料的活性物质,利用恒电流电池测试仪研究其电化学性能·研究发现,这3种活性物质有较高的电化学容量,其首次放电容量分别为1520mAh/g(GeO2),820mAh/g(Sb2O3),1040mAh/g(SnO);首次充电容量分别为800mAh/g(GeO2),520mAh/g(Sb2O3),800mAh/g(SnO)·同时还发现其不可逆容量损失也较大,讨论了产生这一结果的可能原因,提出了减少不可逆容量损失的办法·更多还原

【Abstract】 Three powdered materials, SnO, Sb₂O₃ and GeO₂, were prepared by aminolysis, and any of them was used as an active material for the anode of lithium-ion cells. Using a constant-current cell tester to measure their electrochemical properties, the results show that their initial discharge capacities are 1520,820 and 1040mA·h/g and initial charge capacities are 800,520 and 800mA·h/g for GeO₂, Sb₂O₃ and SnO, respectively. Both are high. On the other hand, their irreversible capacities were also found high.更多还原