A New Charge Storage Mechanism for Electrochemical Capacitors
A New Charge Storage Mechanism for Electrochemical Capacitors
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DOI：
10.1149/1.2043984
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发表时间：
1995
影响因子：
3.9
通讯作者：
Jim P. Zheng;T. Jow
中科院分区：
文献类型：
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作者：
Jim P. Zheng;T. Jow
水合形式的氧化钌（RuO[sub 2][中心点]xH[sub 2]O）已被证明是电化学电容器的优良电极材料。这种材料，如在低温下通过溶胶-凝胶工艺制备的，是无定形的和导电的。比电容超过720 F/g。这一数值至少比这类材料所报告的最高值高出两倍。电荷存储机制被认为涉及氧化物的本体电化学质子化。这一发现为高能量密度电化学电容器领域的研究开辟了新的途径。
The hydrous form of ruthenium oxide (RuO[sub 2][center dot]xH[sub 2]O) has been demonstrated to be an excellent electrode material for electrochemical capacitors. This material, as prepared by a sol-gel process at low temperatures, is amorphous and electrically conductive. The specific capacitance is over 720 F/g. This value is at least two times higher than the highest value ever reported for such materials. The charge storage mechanism is believed to involve bulk electrochemical protonation of the oxide. This discovery opens a new avenue of research in the field of high energy density electrochemical capacitors.