| In recent years,the degree of damage to the world’s environment has become more and more serious,which is mainly caused by the continuous exploitation of fossil energy.Therefore,the most urgent task at present is the research and development of new renewable energy sources.At present,new energy has advantages such as environmental protection and renewable energy,so academic research on them is gradually increasing.However,compared with traditional fossil energy sources that provide stable energy sources,the development of new energy sources is more affected by space and time,so it is necessary to store energy and electricity.Compared with traditional battery energy storage devices,supercapacitors（SC）are more efficient and stable,so they have received extensive attention from academia.Most of the current commercial SCs are based on rigid electrodes,which have shortcomings in flexibility,weight,and safety.Flexible supercapacitors（FSC）overcome these shortcomings,and therefore widely used in flexible electronic products.In this paper,a functionalized carbon cloth（fCC）is used as a substrate,and a composite electrode material that can be used for FSC is obtained by growing active materials on the fCC.At the same time,factors such as the microscopic morphology of the electrode materials and the amount of active materials are studied and tested.In this paper,an in-situ chemical oxidation method was used to successfully grow polyaniline nanoarrays on functionalized carbon cloth under the action of soft templates.By adjusting the amount of aniline polymerization,the micro morphology of polyaniline was optimized.The results showed that when the aniline concentration was 0.1 M and the ratio of initiator was 1:1,the polyaniline grown on the substrate has the most neat morphology,The area specific capacitance of the PANI@fCC at 0.5 m A cm-2 was 1814.37 m F cm-2,and the energy density was 251.97μWh cm-2(power density was 542.37μW cm-2),the capacitance retention rate was 95.7%after 1000 cycles.CuS particles were grown on the fCC by solution polymerization,and the polyaniline array was covered on its surface.The nano-scale PANI array with excellent conductivity grown on the super-hydrophilic fCC provides a superior electroactive surface and significantly reduces the transmission path of ions and electrons,thereby making up for the inherent shortcomings of the low conductivity of CuS.The outstanding theoretical specific capacitance of CuS.The area specific capacitance of the PANI/CuS@fCC at 0.5 m A cm-2 was 2167.2 m F cm-2.PANI/CuS@fCC composite electrode material was subjected to 3000 charge and discharge cycles,the results showed it has an impressive capacity retention rate（93.7%）at 5 m A cm-2.The energy density of the PANI/CuS@fCC sample was 286.71μWh cm-2(power density was612.34μW cm-2).At the same time,the electrode material has good flexibility,and it can maintain good electrochemical performance under the condition of bending at various angles.Finally,the PANI/CuS@fCC composite electrode material was assembled to obtain a symmetrical supercapacitor.After testing,its specific capacitance was 816.4 m F cm-2.In addition,it has a capacitance retention rate of 98%after 1000 cycles. |
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