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Hydrothermal Self-assembly Synthesis of Mn3O4Reduced Graphene Oxide Hydrogel and Its High Electrochemical Performance for Supercapacitors

ISSN号：1001-604X
期刊名称：《中国化学：英文版》
时间：0
分类：O613.71[理学—无机化学;理学—化学] O648.17[理学—物理化学;理学—化学]
作者机构：[1]Key Laboratory of Eco-Environment-Related 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, [2]Department of Chemistry and Chemical Engineering, College of Life Science, Tarim University, Alar, Xinjiang 843300, China
相关基金：Acknowledgement We gratefully acknowledge the financial support offered by the National Natural Science Foundation of China （Nos. 20963009 and 21163017）, the Gansu Science and Technology Committee （No. 0803RJA005）, and the Postgraduate Advisor Program of Provincial Education Department of Gansu.

作者： Li Li[1], Zhongai Hu[1], Yuying Yang[1], Pengju Liang[2], Ailian Lu[1], Huan Xu[1], Yingying Hu[1], Hongying Wu[1]

关键词：氧化石墨, 水凝胶, 自组装, 电化学性能, 超级电容器, 水热, 透射电子显微镜, X-射线光电子能谱, reduced graphene oxide, Mn3O4, self-assembly, hydrogel, supercapacitor

中文摘要：

在现在的工作 Mn3O4/reduced graphene 氧化物 hydrogel (Mn3O4-rGOH ) 与三维(3D ) 网络被制作由一热水自己组装线路。同样获得的样品的形态学，作文，和微观结构用粉末X光检查衍射( XRD )被描绘，X光检查光电子光谱学( XPS )， thermogravimetry 分析( TG )，原子吸收 spectrometry ( AAS )，回答扫描电子显微镜学( FESEM )和传播电子显微镜( TEM )的排放。而且，电气化学的行为被周期的 voltammogram (CV ) 评估， galvanostatic 费用分泌物和电气化学的阻抗光谱学(EIS ) 。测试结果显示有 6.9% Mn3O4 的 hydrogel 完成了 148 F 的特定的电容

英文摘要：

In the present work Mn3O4/reduced graphene oxide hydrogel （Mn3O4-rGOH） with three dimensional （3D） networks was fabricated by a hydrothermal self-assembly route. The morphology, composition, and microstructure of the as-obtained samples were characterized using powder X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, thermogravimetry analysis （TG）, atomic absorption spectrometry （AAS）, field emission scanning electron microscopy （FESEM） and transmission electron microscope （TEM）. Moreover, the electrochemical behaviors were evaluated by cyclic voltammogram （CV）, galvanostatic charge-discharge and electrochemical impedance spectroscopy （EIS）. The test results indicated that the hydrogel with 6.9% Mn3O4 achieved specific capacitance of 148 F.g^-1 at a specific current of 1 A.g^-1, and showed excellent cycling stabilily with no decay after 1200 cycles. In addition, its specific capacitance could retain 70% even at 20 A.g^- 1 in comparison with that at 1 A.g ^-1 and the operating window was up to 1.8 V in a neutral electrolyte.

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