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论文类型：期刊论文

发表时间：2019-07-15

发表刊物：JOURNAL OF POWER SOURCES

收录刊物：SCIE、EI

卷号：428

页面范围：8-12

ISSN号：0378-7753

关键字：Crumpled carbon nanonets; Anthracene oil; High energy density; Supercapacitor

摘要：Carbon nanonets exhibit a tremendous potential as electrode materials for supercapacitor. Herein, we report a facile approach to synthesize crumpled carbon nanonets from anthracene oil by calcium carbonate template strategy coupled with in-situ potassium hydroxide activation. The resultant crumpled carbon nanonets feature net-like structures with hierarchical short pores, possessing a high specific surface area up to 1822 m(2) g(-1) and a total pore volume up to 4.11 cm(3) g(-1). As the electrode for symmetric supercapacitor, crumpled carbon nanonet exhibits a high specific capacitance of 266 F g(-1) and energy density of 113.1 Wh kg(-1) at 0.05 A g(-1), and a good cycle stability with 93.6% capacitance retention after 3000 cycles at 5 A g(-1) in 1-Butyl-3-methylimidazolium hexafluorophosphate ionic liquid electrolyte. This work may provide a novel strategy to prepare the crumpled carbon nanonets for high-performance energy storage devices.