纳米NixCo1-xO的制备及超级电容的性能

广东工业大学学报 ›› 2008, Vol. 25 ›› Issue (3): 18-20.

纳米Ni_xCo_1-xO的制备及超级电容的性能

广东工业大学材料与能源学院；

出版日期:2008-07-01 发布日期:2008-07-01

Ni_xCo_1-xO Prepared by Combining Co-precipitation and Roasting and the Properties of Supercapacitors

Faculty of Material & Energy,Guangdong University of Technology,Guangzhou 510006,China

Online:2008-07-01 Published:2008-07-01

摘要/Abstract

摘要： 以NiSO4.6H2O和Co(NO3)2.6H2O为原料,采用共沉淀-焙烧相结合的方法进行超级电容器用电极材料NixCo1-xO的制备研究.结合恒流充放电、XRD和SEM测试手段,考察了Ni/Co物质的量比、沉淀剂、氨水添加剂对合成产物物理及电化学性能的影响.实验结果表明:n(Ni)∶n(Co)=9∶1,采用NaOH作为沉淀剂,并且适量添加NH3.H2O的条件下,获得纳米级NixCo1-xO,该材料的综合电化学性能最佳,200周期的比电容达到39.37 F/g,1 000次充放电后电容保持率在90%以上.

关键词: 超级电容器；比电容；共沉淀； NixCo1-xO；

Abstract: NixCo1-xO for supercapacitors was prepared by combining co-precipitation and roasting,with NiSO4·6H2O and Co(NO3)2·6H2O as raw materials.The influences of Ni/Co molar ratio,precipitator and NH3·H2O additive on physical and electrochemical performances were studied through XRD,SEM and charge-discharge tests,etc.The results show that nano-materials are obtained under the conditions of NaOH as precipitators,n(NH3·H2O)∶n(NaOH)= 1∶10 and n(Ni)∶n(Co)=9∶1,the 200th specific capacity reaches 39.37 F/g,a...

Key words: supercapacitor； specific capacitance； co-precipitation； NixCo1-xO；

刘丽英；张海燕；刘炳容；陈列春；陈易明； . 纳米Ni_xCo_1-xO的制备及超级电容的性能[J]. 广东工业大学学报, 2008, 25(3): 18-20.

Liu Li-ying,Zhang Hai-yan,Liu Bing-rong,Chen Lie-chun,Chen Yi-ming. Ni_xCo_1-xO Prepared by Combining Co-precipitation and Roasting and the Properties of Supercapacitors[J]. Journal of Guangdong University of Technology, 2008, 25(3): 18-20.

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