Enhancing the stability of electrochemical asymmetric supercapacitor by incorporating thiophene-pyrrole copolymer with nickel sulfide/nickel hydroxide composite

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dc.contributor.author Nath, Anish Reghu
dc.contributor.author Madhu, Bharath
dc.contributor.author Mohan, Ajay
dc.contributor.author N., Sandhyarani
dc.coverage.spatial United States of America
dc.date.accessioned 2022-01-13T14:06:09Z
dc.date.available 2022-01-13T14:06:09Z
dc.date.issued 2022-02
dc.identifier.citation Nath, Anish Reghu; Madhu, Bharath; Mohan, Ajay; N., Sandhyarani, "Enhancing the stability of electrochemical asymmetric supercapacitor by incorporating thiophene-pyrrole copolymer with nickel sulfide/nickel hydroxide composite", Journal of Energy Storage, DOI: 10.1016/j.est.2021.103833, vol. 46, Feb. 2022. en_US
dc.identifier.issn 2352-152X
dc.identifier.uri https://doi.org/10.1016/j.est.2021.103833
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/7418
dc.description.abstract The practical application of a supercapacitor predominantly relies on its sustained cyclic stability. Hence it is essential to develop materials with high stability for the efficient supercapacitor applications. Herein, we demonstrate the integration of a copolymer of poly thiophene-pyrrole (cPPyTh) to surpass the limited cyclic stability of the nickel sulfide/nickel hydroxide (NSH) composite. Though the lower electronegativity of sulfur in coexistence with hydroxide achieves a superior capacity for NSH, it lacks extended cyclic stability. By incorporating cPPyTh into the layers of NSH, the stability of the resultant composite (NCP) could be enhanced by preventing the aggregation of layered NSH during longer runs. NCP electrode provides a specific capacity of 87 C/g at a current density of 1 A/g in a three-electrode system. An energy density of 25.47 Wh/kg and power density of 8.65 kW/kg is obtained for the asymmetric supercapacitor fabricated with NCP as positive and modified activated carbon (MAC) as negative electrode. The NCP demonstrates a superior cyclic stability of over 94% for 10,000 cycles in comparison to NSH with stability ? 73% over 5,000 cycles for the asymmetric supercapacitor.
dc.description.statementofresponsibility by Anish Reghu Nath, Bharath Madhu, Ajay Mohan and Sandhyarani N.
dc.format.extent vol. 46
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Asymmetric supercapacitor en_US
dc.subject Nickel sulphide en_US
dc.subject Nickel hydroxide en_US
dc.subject Pseudocapacitor en_US
dc.subject Copolymer en_US
dc.subject Modified activated carbon (MAC) en_US
dc.title Enhancing the stability of electrochemical asymmetric supercapacitor by incorporating thiophene-pyrrole copolymer with nickel sulfide/nickel hydroxide composite en_US
dc.type Article en_US
dc.relation.journal Journal of Energy Storage


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