期刊
ELECTROCHIMICA ACTA
卷 130, 期 -, 页码 766-770出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2014.03.079
关键词
Li-ion hybrid electrochemical capacitors; porous carbon; energy density; non-aqueous
资金
- Council of Scientific and Industrial Research (CSIR, Govt. of India)
- National Research Foundation (NRF, Singapore)
- Competitive Research Programme (CRP) [NRF-CRP4-2008-03]
- TAPSUN program.
High energy density Li-ion hybrid electrochemical capacitors (Li-HEC) are fabricated with 3 D architectured high surface area porous carbon (HSPC) derived from the poly(acrylamide-co-acrylic acid) potassium salt in a single step without any activating agent. The obtained HSPC exhibits high specific surface area of 1490 m(2) g(-1) and characterized with several analytical techniques. Li-HEC is fabricated with insertion type Li4Ti5O12 anode by adjusting the mass balance based on the single electrode performance with Li. The Li-HEC delivered the maximum energy density of similar to 55 Wh kg(-1), which is much higher than commercially available activated carbon (similar to 36 Wh kg(-1)). Further HSPC based Li-HEC delivered excellent cycleability and rendered similar to 87% of initial value after 2000 cycles. (C) 2014 Elsevier Ltd. All rights reserved.
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