Pseudocapacitive Properties of Vertically Aligned Multilayered Manganese Oxide
Pseudocapacitive Properties of Vertically Aligned Multilayered Manganese Oxide
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DOI：
10.1149/1.3202396
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发表时间：
2009-11
影响因子：
--
通讯作者：
Ryota Inoue;M. Nakayama
中科院分区：
文献类型：
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作者：
Ryota Inoue;M. Nakayama
Co2+离子被掺入到阳极生长的层状锰氧化物薄膜的层间空间中。在0 ~+0.8V（vsAg/AgCl）的电位范围内，在Na 2SO 4水溶液中对Pt基底上的膜进行重复的电化学循环。随着循环次数的增加，伏安电容逐渐增加，伴随着剧烈的形态转变，其中平行于基板的多层膜在循环前垂直排列。所得膜在2 mV/s下表现出223 F/g的高比电容，具有优异的充电/放电稳定性。
Co 2+ ions were incorporated into the interlayer space of a layered manganese oxide film grown anodically. The film on Pt substrate was subjected to repetitive electrochemical cycling in aqueous Na 2 SO 4 electrolyte in the potential region between 0 and +0.8 V (vs Ag/AgCl). With increasing cycle number, the voltammetric capacitance gradually increased, accompanying a drastic morphological transformation in which the multilayers lying parallel to the substrate before cycling were aligned vertically. The resulting film exhibited a high specific capacitance of 223 F/g at 2 mV/s with excellent charge/discharge stability.