A hybrid composite of rGO/TiO2 as a double layer electrode with improved capacitance performance |
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| Authors: | Syeda Wishal Bokhari Ahmad Hassan Siddique Xiaoyu Yue Harshpeet Singh Muhammad Dilawer Hayat Wei Gao |
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| Affiliation: | 1. Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, Auckland, New Zealand;2. Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo, China |
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| Abstract: | Reduced graphene oxide (rGO) has unique properties that can revolutionize the performance of the functional devices. rGO hybrids can be designed with transition metal oxides for improved energy storage applications. Herein, a hybrid composite of conductive rGO with titanium dioxide, designed by a simple hydrothermal method, is reported to demonstrate a high double layer capacitance in aqueous electrolyte systems. The mesoporous structure of the composite provides short ion diffusion pathways and the resultant capacitance of the material is 334 F g−1 with ~77% capacitance retention after 7000 charge-discharge cycles. |
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| Keywords: | capacitance EDLC electrodes graphene hybrid composites supercapacitor |
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