期刊
ELECTROCHIMICA ACTA
卷 353, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2020.136609
关键词
Metal-organic frameworks; MIL-53 (Al); Reduced graphene oxide; Nanocomposites; Supercapacitor
资金
- Centre Franco-Indien pour la Promotion de la Recherche Avancee (CEFIPRA)
- Campus France
- IIT, Dhanbad
- Centre National de la Recherche Scientifique (CNRS)
- University of Lille
Integration of aluminum-terephthalate metal-organic frameworks, MIL-53 (Al) with reduced graphene oxide (rGO) leads to the formation of MIL-53 (Al)@rGO hybrid materials with superior charge storage properties. This work reports the synthesis of MIL-53 (Al)@rGO nanocomposites through solvothermal method and study of their electrochemical charge storage properties. The optimized composite of MIL-53 (Al) and rGO (coded as C-10) exhibits a specific capacitance of 280 F g(-1) at 0.5 A g(-1). Furthermore, electrochemical measurements, carried out in a symmetric two-electrode configuration, revealed that the hybrid composite C-10 reached an energy density of 6.66 Wh kg(-1) and a power density of 3655 W kg(-1). It displayed a capacitance retention of 50% after 5,000 charge/discharge cycles. Integration of MIL-53(Al) and rGO leads to the creation of alternate pathways for ion-diffusion, hierarchical pore features, greater exposure of MIL-53 (Al) clusters as redox active sites attributed to their uniform distribution on rGO sheets, resulting in better charge storage performance. (c) 2020 Elsevier Ltd. All rights reserved.
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