期刊
RSC ADVANCES
卷 4, 期 97, 页码 54662-54667出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra09395j
关键词
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资金
- National Nature Science Foundations of China [21103205]
- West Light Foundation of the Chinese Academy of Sciences
We used low-cost pomelo peel (PP) as a biomass-derived porous activated carbon to fabricate a high energy density symmetric supercapacitor. The porous activated carbon was prepared from the pomelo peel (PP) via pyrolysis and a KOH activation process, followed by heat treatment under an argon atmosphere. The resulting porous carbon possesses a very high specific surface area (2105 m(2) g(-1)) and abundant oxygen functionalities, which lead to a wide voltage window of 1.7 V, a specific capacitance of 43.5 F g(-1) and a high energy density of 17.1 W h kg(-1) for the as-assembled AC//AC symmetric supercapacitor. These impressive electrochemical characteristics may indicate the PP to act as a new biomass source of carbonaceous materials for low-cost and high performance electrical energy storage devices.
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