纳米棒
电解质
循环伏安法
水平扫描速率
假电容
材料科学
超级电容器
单斜晶系
化学工程
电化学
分析化学(期刊)
无机化学
化学
电极
结晶学
纳米技术
色谱法
晶体结构
物理化学
工程类
作者
K. K. Purushothaman,M. Cuba,G. Muralidharan
标识
DOI:10.1016/j.materresbull.2012.07.027
摘要
α-MnMoO4 nanorods were prepared on conducting glass substrate via sol–gel spin coating method at the optimum doping level. The effect of electrolyte on the pseudocapacitance behavior of the α-MnMoO4 nanorods was studied using para toluene sulfonic acid (p-TSA), sulfuric acid (H2SO4) and hydrochloric acid (HCl) as electrolytes. X-ray diffraction analysis reveals the formation of α-MnMoO4 in monoclinic phase. FTIR spectra contain vibrational bands associated with MoO, M–O and Mo–O–Mo bonds. SEM image reveals the formation of nanorods. Supercapacitor behavior has been studied using cyclic voltammetry (CV) analysis. α-MnMoO4 nanorods exhibit maximum specific capacitance of 998 F/g at a scan rate of 5 mV/s in H2SO4 electrolyte while a specific capacitance of 784 F/g and 530 F/g have been obtained using p-TSA and HCl electrolytes, respectively. At higher scan rates p-TSA electrolyte exhibits superior capacitive behavior than H2SO4.
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