以NiSO4·6H2O为反应原料,采用液相沉淀法制备了Ni2+掺杂的V2O5正极材料,利用SEM、XRD、恒电流充放电、循环伏安和交流阻抗测试对反应产物的微观形貌、相结构及电化学性能进行了研究.结果表明:掺杂少量Ni2+对V2O5的晶型结构及表观形貌产生一定的影响,有利于降低V2O5的电荷转移电阻;随着Ni2+掺杂量的增加,电化学电容器的比能量增大,当掺Ni2+2.5%时比能量为15.6 Wh·kg-1,库仑效率达95.12%.
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