摘要
利用十二核锰簇合物[Mn12O12(CH3COO)16(H2O)4]为前驱物,通过先碱解再灼烧的方法合成了一种钠锰氧化合物Na0.7MnO2.05。扫描电子显微镜(SEM)观察结果表明产物由微米级的扁平棒状晶体组成。电化学测试表明,Na0.7MnO2.05是一种性能比较优良的超级电容器电极材料。在0.5 mol.L-1 Na2SO4电解质溶液中和0~0.8 V电位窗口范围内,具有良好的循环稳定性能,充放电速率为0.125A.g-1时单电极比电容达121 F.g-1。
The sodium manganese oxide Na0.7MnO2.05 was synthesized through alkaline hydrolysis of [Mn12O12(CH3COO)16(H2O)4] followed by thermal calcinations.Scanning electron microscope(SEM) study revealed that the as prepared Na0.7MnO2.05 was composed of flat micro-rod crystals.Electrochemical studies demonstrated that Na0.7MnO2.05 is a good electrode material for supercapacitor.The specific capacitance value of the sample is about 121 F·g-1 at the charge/discharge rate of 0.125 A·g-1 in 0.5 mol·L-1 Na2SO4 electrolyte.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2011年第11期2138-2142,共5页
Chinese Journal of Inorganic Chemistry
基金
国家基础研究计划(No.2011CB933300,No.2007CB925100,No.2011CB80870)
国家自然科学基金(No.21021062,No.91022031)
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