Material and Electrochemical Characterization of Tetrapropylammonium Manganese Oxide Thin Films as Novel Electrode Materials for Electrochemical Capacitors
Material and Electrochemical Characterization of Tetrapropylammonium Manganese Oxide Thin Films as Novel Electrode Materials for Electrochemical Capacitors
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DOI：
10.1149/1.1453406
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发表时间：
2002-04
影响因子：
3.9
通讯作者：
S. Chin;S. Pang;M. Anderson
中科院分区：
文献类型：
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作者：
S. Chin;S. Pang;M. Anderson
稳定的胶体四丙基氧化锰铵~TPA-MO！由高锰酸四丙铵与2-丁醇在室温下还原而成。采用溶胶-凝胶法将TPA-MO薄膜直接浸涂在干净的镍箔上，然后在受控条件下进行热处理。采用brunauer - emmet - teller法、x射线衍射和扫描电镜对TPA-MO薄膜在不同煅烧温度下的微观结构演变进行了表征。用循环伏安法在各种水溶液中评价了这些薄膜作为超级电容器的性能。这些薄膜表现出优异的电容性能，比电容为720 F/g。这些薄膜还表现出良好的可逆性和循环稳定性，在1500次循环后，其充电容量损失不超过20%。
Stable colloidal tetrapropylammonium manganese oxide ~TPA-MO! was formed by the reduction of tetrapropylammonium permanganate with 2-butanol at room temperature. Thin films of TPA-MO were prepared using the sol-gel process by dip-coating directly onto clean nickel foils followed by heat-treatment under controlled conditions. The microstructure evolution of TPA-MO films at various calcination temperatures was characterized using Brunauer-Emmett-Teller method, X-ray diffraction, and scanning electron microscopy. The performance of these films as supercapacitors was evaluated using cyclic voltammetry in various aqueous electrolytes. These thin films exhibited excellent capacitive behavior with a specific capacitance of 720 F/g. These films also showed good reversibility and cycling stability, losing little more than 20% of their charge capacity after 1500 cycles.