摘要
采用电化学活化剥落的石墨纳米片阵列(GNSA)作为导电基质,然后通过阴极还原电沉积法一步制得碱式氧化锰/石墨纳米片阵列(MnOOH/GNSA)复合电极。形貌表征表明,复合电极呈现纳米花形貌。电化学测试表明在沉积时间为120s时制得的复合电极具有最佳超电容性能,用所制备的MnOOH/GNSA复合电极组装成的对称型超级电容器,当电压为1.8V,扫速为5mV/s时,比电容为1206F/m^2,能量密度为0.54Wh/m^2,对应的功率密度为5.4W/m^2。
Electrochemical activation of graphite rod obtained graphite nanosheet array（GNSA）as a conductive substrate,and then by cathodic reduction of electrode position produced MnOOH/graphite nanometer array（MnOOH/GNSA）composite electrode.Morphology characterization indicated that MnOOH/GNSA showed the feature of nanoflowes.Electrochemical tests showed that the optimal deposition time was 120 s,under this condition the electrode material showed the best performance of supercapacitor.A symmetric supercapacitor was assembled by using MnOOH/GNSA,which exhibited outstanding capacitive properties with high specific capacitance of 1206F/m^2 and high energy density（0.54Wh/m^2）along with power density（5.4W/m^2）under the cell voltage of 1.8V and the scan rate of 5mV/s.
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第1期219-222,共4页
New Chemical Materials
基金
国家自然科学基金(20963009,21163017)
高等学校博士学科点专项科研基金(20126203110001)
关键词
超级电容器
石墨纳米片阵列
MnOOH
复合电极
超电容性能
supercapacitor
graphite nanosheet array
MnOOH
composite electrode
performance of supercapacitor
