Electrochemical supercapacitor material based on manganese oxide: preparation and characterization
Electrochemical supercapacitor material based on manganese oxide: preparation and characterization
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DOI：
10.1016/s0013-4686(02)00031-2
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发表时间：
2002-06-05
影响因子：
6.6
通讯作者：
Kucernak, A
中科院分区：
文献类型：
--
作者：
Jiang, JH;Kucernak, A
在含水乙腈电解质中，以卤化锰配合物为原料，在室温下电化学合成了一类新型的电化学超级电容器电极材料。通过扫描电子显微镜、x射线光电子显微镜（XPS）、FT-Raman显微镜和循环伏安法对该材料进行了物理和化学表征。XPS和FT-Raman表征表明，该材料由化学成分为Mn3O4的氧化锰组成，含有适量的碳。循环伏安表征表明，该材料具有比通常所见的氧化锰更高的电子导电性，并且在水溶液和乙腈电解质中都表现出快速的充放电动力学。该材料在水电解质和乙腈电解质的电位窗口上提供了约1 V和约2 V的大伪电容。因此，它是一个很好的候选材料作为电化学超级电容器电极。(C) 2002 Elsevier Science Ltd.版权所有。
A novel class of electrochemical supercapacitor electrode material has been electrochemically synthesized from a manganese halide complex in water-containing acetonitrile electrolyte at room temperature. This material has been physically and chemically characterized by scanning electron microscopy, X-ray photoelectron microscopy (XPS), FT-Raman microscopy and cyclic voltammetry. XPS and FT-Raman characterization suggest that this material is composed of manganese oxide with a chemical composition of Mn3O4 and containing a moderate amount of carbon. Cyclic voltammetric characterization indicates that this material has higher electronic conductivity than usually seen for manganese oxide and that it shows fast kinetics for the charge-discharge process in both aqueous and acetonitrile electrolytes. The material provides a large pseudo capacitance over a potential window of about I V in aqueous electrolyte and about 2 V in acetonitrile electrolyte. It is therefore a good candidate as a material for an electrochemical supercapacitor electrode. (C) 2002 Elsevier Science Ltd. All rights reserved.