氧化钌/石墨纳米片复合阵列电极的制备及其电容性能

引用本文: 胡英瑛, 胡中爱, 张亚军, 鲁爱莲, 徐欢, 张子瑜, 杨玉英, 李丽, 吴红英. 氧化钌/石墨纳米片复合阵列电极的制备及其电容性能[J]. 物理化学学报, 2013, 29(02): 305-310. doi: 10.3866/PKU.WHXB201211201 shu

Citation: HU Ying-Ying, HU Zhong-Ai, ZHANG Ya-Jun, LU Ai-Lian, XU Huan, ZHANG Zi-Yu, YANG Yu-Ying, LI Li, WU Hong-Ying. Synthesis and Electrochemical Characterization of RuO₂·xH₂O/Graphite Nanosheet Composite Array Electrodes for Supercapacitors[J]. Acta Physico-Chimica Sinica, 2013, 29(02): 305-310. doi: 10.3866/PKU.WHXB201211201 shu

氧化钌/石墨纳米片复合阵列电极的制备及其电容性能

摘要:

通过电化学剥离法在石墨棒表面构筑了层数不等、彼此平行且垂直于基底的二维石墨纳米片(GNS)阵列, 而后采用阴极还原电沉积法在GNSs 表面均匀地包覆了一层氧化钌(RuO₂·xH₂O)薄膜, 形成了RuO₂·xH₂O/GNS 复合阵列电极. 电化学测试表明, RuO₂·xH₂O/GNS 复合阵列电极具有优良的超电容性能, 在0.5mol·L^-1 H₂SO₄电解质溶液中, 扫描速率为5 mV·s^-1, 电位窗口为0.9 V时, 其比电容高达4226 F·m^-2, 并且具有优异的循环性能, 经过20000圈充放电循环后, 电容保持率高达94.18%.

关键词:

English

Synthesis and Electrochemical Characterization of RuO₂·xH₂O/Graphite Nanosheet Composite Array Electrodes for Supercapacitors

1.
Key Laboratory of Polymer Materials of Gansu Province, Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P.R. China
Received Date: 07 September 2012
Available Online: 14 January 2013

Abstract:

We used electrochemical exfoliation to construct graphite nanosheet (GNS) arrays, in which the varying number of nanosheet layers were parallel to each other and perpendicular to the carbon substrate. Hydrous ruthenium oxide (RuO₂·xH₂O) was then loaded directly on the surface of nanosheets using cathodic reduction electrodeposition, resulting in the formation of RuO₂·xH₂O/GNS composite array electrodes. Electrochemical measurements showed that the composite array electrodes exhibited excellent capacitive behaviors, and achieved specific capacitance values as high as 4226 F·m^-2 in the potential window up to 0.9 V, with a scan rate of 5 mV·s^-1 in 0.5 mol·L^-1 H₂SO₄ solution. The RuO₂·xH₂O/GNS composite array electrodes showed od cycling abilities, and maintained 94.18% of their maximum performance after 20000 cycles.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

氧化钌/石墨纳米片复合阵列电极的制备及其电容性能

English

Synthesis and Electrochemical Characterization of RuO₂·xH₂O/Graphite Nanosheet Composite Array Electrodes for Supercapacitors

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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中国化学会秘书处

氧化钌/石墨纳米片复合阵列电极的制备及其电容性能

English

Synthesis and Electrochemical Characterization of RuO2·xH2O/Graphite Nanosheet Composite Array Electrodes for Supercapacitors

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

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CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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