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Ruthenium Oxide/Reduced Graphene Oxide Nanoribbon Composite and Its Excellent Rate Capability in Supercapacitor Application

ISSN号：1001-604X
期刊名称：《中国化学：英文版》
时间：0
分类：TM53[电气工程—电器] TB332[一般工业技术—材料科学与工程]
作者机构：Key Laboratory of Eco-Environment-Relatged Polymer Materials of Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
相关基金：Acknowledgement We gratefully acknowledge the financial support offered by the National Natural Science Foundation of China （Nos. 20963009 21163017 and 21563027） and Specialized Research Fund for the Doctoral Program of Higher Education（No. 20126203110001）.

作者： Ruijing Wang, Pengfei Jia, Yuying Yang, Ning An, Yadi Zhang, Hongying Wu, Zhongai Hu

关键词：纳米复合材料, 超级电容器, 氧化石墨, 氧化/还原, 三电极系统, 应用, 性能, 倍率, ruthenium oxide, graphene oxide nanoribbon, the Hummers method, symmetric supercapacitor

中文摘要：

化学氧化被用来切并且在横向的方向和轴的方向解开多围的碳 nanotubes 形成 graphene 氧化物 nanoribbon (GONR ) 。钌氧化物 / 还原剂 graphene 氧化物 nanoribbon 合成(有装载的 72.5 wt% RuO ₂ 的 RuO ₂/rGONR) 通过水阶段的反应被综合在哪个 GONR 作为开始材料被服务，在周围的空中由温和热处理列在后面。产生 RuO ₂/rGONR 合成在三电极的系统使用在 1 A·g ⁻¹ 的当前的密度完成特定的电容直到 677 F·g ⁻¹ 1 mol·L ⁻¹ H ₂ 同样多象电解质一样。结果的电极展出一个优秀的率能力(在 20 A·g ⁻¹) 的 91.8% 保留率。特别，根据 RuO ₂/rGONR 电极装配的对称的 supercapacitor 交付高精力密度(甚至在为 supercapacitors 很必要的 9885 W·kg ⁻¹, 的力量密度的 16.2 Wh·kg ⁻¹) 。

英文摘要：

Chemical oxidation is used to cut and unzip multi-walled carbon nanotubes in the transverse direction and the axial direction to form graphene oxide nanoribbon （GONR）. Ruthenium oxide/reduced graphene oxide nanoribbon composite （RuO2/rGONR） with a 72.5 wt% RuO2 loading is synthesized through an aqueous-phase reaction, in which GONR is served as starting material, followed by mild thermal treatment in ambient air. The resulting RuO2/rGONR composite achieves specific capacitance up to 677 F.g l at the current density of 1 A·g^-1 in three-electrode system using 1 mol·L^-1 H2SO4 as electrolyte. The resultant electrode exhibits an excellent rate capability （91.8% retention rate at 20 A·g^-1）. Especially, the symmetric supercapacitor assembled on the basis of RuO2/rGONR electrode delivers high energy density （16.2 Wh·kg^-1） even at the power density of 9885 W·kg^-1, which is very essential for supercapacitors.

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