摘要
分别用乳液沉淀法和直接沉淀法制备了Ni(OH)2前驱体,在500℃下煅烧2 h,得到NiO。用XRD、SEM、充放电和交流阻抗测试对NiO的结构、形貌和性能进行分析,探讨了嵌脱锂行为。用乳液沉淀法制备的纳米NiO材料更均匀、粒径更小。以100 mA/g的电流在0.01～3.00 V循环,第30次循环时,用乳液沉淀法和直接沉淀法制备的材料的充电比容量分别为427.3 mAh/g、325.0 mAh/g,容量保持率分别为76.9%、39.9%。
Ni（ OH）2 precursors were prepared by latex-precipitation method and direct-precipitation method, respectively, then cal- einated at 500 ℃ for 2 h to obtain NiO. The structure, morphology and performance of NiO were characterized by XRD, SEM, charge-discharge and AC impedance tests, the lithium insertion-extraction behavior was studied. Nano-seale NiO material obtained by latex-precipitation method was uniform and smaller in size. When cycled in 0.01 ~ 3.00 V with the current of 100 mA/g, the specifie charge capacities in the 30th cycle of material prepared by latex-precipitation method and direct-precipitation method were 427.3 mAh/g and 325.0 mAh/g, respectively, the capacity retention rates were 76.9% and 39.9 %, respectively.
出处
《电池》
CAS
CSCD
北大核心
2012年第3期123-125,共3页
Battery Bimonthly
基金
福建省教育厅科技项目(JB10188)
宁德师范学院资助项目(2010204)
关键词
NiO负极材料
锂离子电池
制备方法
电化学性能
NiO anode material
Li-ion battery
synthesis method
electrochemical performance
