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Dense Reduced Graphene Oxide Films Obtained by Pressing Create Stable and Compact Capacitive Energy Storage

文献类型：期刊论文

作者Lin, Dou1,2,3; Tang, Zihui2,3,4; Pan, Qijun2,3,4; Zhang, Shiping2,3,4; Huo, Dexian2,3,4; Yan, Sisi2,3,4; Han, Fangming2,3
刊名CHEMELECTROCHEM
出版日期2020-04-14
ISSN号2196-0216
关键词graphene hydrogel films supercapacitors volumetric energy density cycling stability power density
DOI10.1002/celc.202000246
通讯作者Han, Fangming(fmhan@issp.ac.cn)
英文摘要It is generally believed that the re-stacking of reduced graphene oxide (rGO) sheets limits the electrochemical energy storage. Therefore, rGO based electrodes are usually designed to be non-compact porous and fluffy structures. However, fluffy structures could reduce the conductance, structure stability, and cycling stability of electrodes. Here, to balance the contradiction, three electrodes with different compactness were studied. Amazingly, dense rGO hydrogel films (DrGO-HF) achieved by simply pressing filtrated rGO films, show highly stable (92 % capacitance retention after 250 000 cycles) and high-performance compact capacitive energy storage, which can be attributed to the structural stability and electrical conductivity enhanced by the close contact between graphene sheets. This study clarifies the scientific fact that the re-stacking of rGO sheets would not degrade the electrochemical energy storage performances, which is of great significance for the design and preparation of supercapacitor electrodes with high volumetric energy density.
WOS关键词SUPERCAPACITOR ELECTRODES ; NEXT-GENERATION ; REDUCTION ; HYDROGELS ; DESIGN
资助项目National Natural Science Foundation of China[51372247] ; National Natural Science Foundation of China[91963202]
WOS研究方向Electrochemistry
语种英语
出版者WILEY-V C H VERLAG GMBH
WOS记录号WOS:000526973500001
资助机构National Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/103669]  
专题中国科学院合肥物质科学研究院
通讯作者Han, Fangming
作者单位1.Anhui Jianzhu Univ, Sch Mat & Chem Engn, Hefei 230601, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Anhui, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Anhui, Peoples R China
4.Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Lin, Dou,Tang, Zihui,Pan, Qijun,et al. Dense Reduced Graphene Oxide Films Obtained by Pressing Create Stable and Compact Capacitive Energy Storage[J]. CHEMELECTROCHEM,2020.
APA Lin, Dou.,Tang, Zihui.,Pan, Qijun.,Zhang, Shiping.,Huo, Dexian.,...&Han, Fangming.(2020).Dense Reduced Graphene Oxide Films Obtained by Pressing Create Stable and Compact Capacitive Energy Storage.CHEMELECTROCHEM.
MLA Lin, Dou,et al."Dense Reduced Graphene Oxide Films Obtained by Pressing Create Stable and Compact Capacitive Energy Storage".CHEMELECTROCHEM (2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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