期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 27, 页码 22398-22407出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b03299
关键词
rGO; Fe2O3; scrolls; hybrid supercapacitor; volumetric energy density
资金
- GIST Research Institute (GRI) project through GIST
- National Research Foundation of Korea (NRF) - Korea Government, Ministry of Science, ICT and Future Planning [2017R1A2B3004049]
- Technology Innovation Program - Ministry of Trade, industry & Energy (MI, Korea) [10053010]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10053010] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2017R1A2B3004049] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The low volumetric energy density of reduced graphene oxide (rGO)-based electrodes limits its application in commercial electrochemical energy storage devices that require high-performance energy storage capacities. in small volumes. The volumetric energy density of rGO-based electrode materials is very low due to their low packing density. A supercapacitor with enhanced packing density and high volumetric energy density is fabricated using doped rGO scrolls (GFNSs) as the electrode material. The restacking of rGO sheets is successfully controlled through synthesizing the doped scroll structures while increasing the packing density. The fabricated cell exhibits an ultrahigh volumetric energy density of 49.66 Wh/L with excellent cycling stability (>10000 cycles). This unique design strategy for the electrode material has significant potential for the future super capacitors with high volumetric energy densities.
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