Freestanding Three-Dimensional Graphene/MnO2 Composite Networks As Ultra light and Flexible Supercapacitor Electrodes
He, YM; Chen, WJ; Li, XD; Zhang, ZX(张振兴); Fu, JC; Zhao, CH; Xie, EQ(谢二庆); He, YM (reprint author), Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China.
收录类别SCIE ; EI ; PubMed ; MEDLINE ; ESI
ESI注释2017-07-19;Highly Cited Papers
2013-01
发表期刊ACS NANO
卷号7期号:1页码:174-182
出版者AMER CHEMICAL SOC
出版地WASHINGTON
摘要A lightweight, flexible, and highly efficient energy management strategy is needed for flexible energy-storage devices to meet a rapidly growing demand. Graphene-based flexible supercapacitors are one of the most promising candidates because of their intriguing features. In this report, we describe the use of freestanding, lightweight (0.75 mg/cm(2)), ultrathin (<200 mu m), highly conductive (55 S/cm), and flexible three-dimensional (3D) graphene networks, loaded with MnO2 by electrodeposition, as the electrodes of a flexible supercapacitor. It was found that the 3D graphene networks showed an ideal supporter for active materials and permitted a large MnO2 mass loading of 9.8 mg/cm(2) (similar to 92.9% of the mass of the entire electrode), leading to a high area capacitance of 1.42 F/cm(2) at a scan rate of 2 mV/s. With a view to practical applications, we have further optimized the MnO2 content with respect to the entire electrode and achieved a maximum specific capacitance of 130 F/g. In addition, we have also explored the excellent electrochemical performance of a symmetrical supercapacitor (of weight less than 10 mg and thickness similar to 0.8 mm) consisting of a sandwich structure of two pieces of 3D graphene/MnO2 composite network separated by a membrane and encapsulated in polyethylene terephthalate (PET) membranes. This research might provide a method for flexible, lightweight, high-performance, low-cost, and environmentally friendly materials used in energy conversion and storage systems for the effective use of renewable energy.
关键词Graphene 3d Conductive Network Flexible Ultralight Mno2 Supercapacitor
作者部门[He, Yongmin;
Chen, Wanjun;
Li, Xiaodong;
Zhang, Zhenxing;
Fu, Jiecai;
Zhao, Changhui;
Xie, Erqing] Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China
学科领域Chemistry ; Science & Technology - Other Topics ; Materials Science
所属项目编号National Natural Science Foundation of China [61176058] ; Key Technology Research and Development Program of Gansu Province, China [1011GKCA027] ; Natural Science Foundation of Gansu Province [1107RJYA280]
资助项目国家自然科学基金项目 ; 甘肃省青年科技基金计划 ; 甘肃省科技支撑计划
项目资助者NSFC ; GSSTD
DOI10.1021/nn304833s
ISSN1936-0851
文章类型Article
语种英语
WOS记录号WOS:000314082800021
EI记录号20130515964765
PM记录号23249211
第一机构
Citation statistics
文献类型期刊论文
条目标识符http://ir.lzu.edu.cn/handle/262010/103420
Collection物理科学与技术学院
通讯作者He, YM (reprint author), Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Peoples R China.
Recommended Citation:
GB/T 7714
He, YM,Chen, WJ,Li, XD,et al. Freestanding Three-Dimensional Graphene/MnO2 Composite Networks As Ultra light and Flexible Supercapacitor Electrodes[J]. ACS NANO,2013,7(1):174-182.
APA He, YM.,Chen, WJ.,Li, XD.,Zhang, ZX.,Fu, JC.,...&He, YM .(2013).Freestanding Three-Dimensional Graphene/MnO2 Composite Networks As Ultra light and Flexible Supercapacitor Electrodes.ACS NANO,7(1),174-182.
MLA He, YM,et al."Freestanding Three-Dimensional Graphene/MnO2 Composite Networks As Ultra light and Flexible Supercapacitor Electrodes".ACS NANO 7.1(2013):174-182.
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