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Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications
Dissertation (MSc (Physics))--University of Pretoria, 2020.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2021
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| _version_ | 1867613611442044928 |
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| access_status_str | Open Access |
| author2 | Manyala, Ncholu I. |
| author_browse | Manyala, Ncholu I. |
| author_facet | Manyala, Ncholu I. |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Physics))--University of Pretoria, 2020. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/78393 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:38:54.079Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/78393 Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications Manyala, Ncholu I. rutavigift@yahoo.com Rutavi, Gift UCTD Physics Dissertation (MSc (Physics))--University of Pretoria, 2020. Vanadium disulphide/graphene foam composite samples with varying physical and electrochemical properties were synthesised through varying the mass of graphene in the composite. The optimized VS2/GF-100 mg exhibited superior specific capacity of 38 mAh g-1 which was larger than 31 mA h g-1 of the pristine (VS2) at a specific current of 0.5 A g-1. A hybrid capacitor was then assembled by using VS2/GF-100 mg as the positive electrode and activated sugar carbon (ACS) as the negative electrode material in 2 M KOH. The hybrid device of VS2/GF-100 mg/ ACS provided a specific energy of 24 Wh kg-1 and a specific power of 494 W kg-1 at a specific current of 0.5 A g-1. The device showed a high cycling stability with 86.5 % capacity retention for 15 000 charge discharge cycles at 5 A g-1. South African Research Chairs Initiative (SARCHi) and NRF (Grant number 61056) Physics MSc (Physics) Restricted 2021-02-10T10:37:41Z 2021-02-10T10:37:41Z 2021-04-30 2020-11-30 Dissertation * A2021 http://hdl.handle.net/2263/78393 DOI: https://doi.org/10.25403/UPresearchdata.21717062.v1 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Physics Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications |
| title | Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications |
| title_full | Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications |
| title_fullStr | Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications |
| title_full_unstemmed | Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications |
| title_short | Synthesis and Characterisation of vanadium disulphide and its composites for supercapacitor applications |
| title_sort | synthesis and characterisation of vanadium disulphide and its composites for supercapacitor applications |
| topic | UCTD Physics |
| url | http://hdl.handle.net/2263/78393 |