期刊
JOURNAL OF MATERIALS SCIENCE
卷 54, 期 1, 页码 683-692出版社
SPRINGER
DOI: 10.1007/s10853-018-2871-6
关键词
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资金
- Ministry of Education Malaysia [RDU160118: FRGS/1/2016/STG07/UMP/02/3]
- Universiti Malaysia Pahang [RDU170357]
- King Khalid University [R.G.P.2/2/38]
This study presents the electrochemical studies of activated carbon prepared from palm kernel shell (ACPKS), with CaO impregnation. The CaO is obtained from chicken eggshell waste to produce CaO/ACPKS, which shows highly porous honeycomb structure with homogeneous distribution of CaO nanoparticles (30-50nm in size). The prepared materials are evaluated as supercapacitor electrodes by testing their electrochemical characteristics. A high specific capacitance value of 222Fg(-1) at 0.025Ag(-1) is obtained for CaO/ACPKS, which is around three times higher than that for ACPKS (76Fg(-1)). In addition, electrochemical impedance data show lower impedance for CaO/ACPKS. Lastly, a practical symmetrical supercapacitor is fabricated by CaO/ACPKS and its performance is discussed.
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