Journal
ADVANCED ENERGY MATERIALS
Volume 3, Issue 11, Pages 1500-1506Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201300467
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Funding
- Energy Efficiency and Resources R&D program under the Ministry of Knowledge Economy, Republic of Korea [20112020100070]
- Human Resources Development program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) [20124010203320]
- Korean government through the Ministry of Trade, Industry and Energy
- National Research Foundation of Korea
- Korean Government (MEST) [NRF-2009-0094219]
- Converging Research Center Program through the Ministry of Education, Science and Technology [2012K001267]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20112020100070] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A hybrid supercapacitor with high energy and power densities is reported. It comprises a composite anode of anatase TiO2 and reduced graphene oxide and an activated carbon cathode in a non-aqueous electrolyte. While intercalation compounds can provide high energy typically at the expense of power, the anatase TiO2 nanoparticles are able to sustain both high energy and power in the hybrid supercapacitor. At a voltage range from 1.0 to 3.0 V, 42 W h kg(-1) of energy is achieved at 800 W kg(-1). Even at a 4-s charge/discharge rate, an energy density as high as 8.9 W h kg(-1) can be retained. The high energy and power of this hybrid supercapacitor bridges the gap between conventional batteries with high energy and low power and supercapacitors with high power and low energy.
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