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Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage
Thesis (PhD)--University of Pretoria, 2014.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2021
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| _version_ | 1867613530808647680 |
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| access_status_str | Open Access |
| author2 | Ozoemena, Kenneth I. |
| author_browse | Ozoemena, Kenneth I. |
| author_facet | Ozoemena, Kenneth 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 | Thesis (PhD)--University of Pretoria, 2014. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/79780 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:37.270Z |
| 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:2263/79780 Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage Ozoemena, Kenneth I. kozoemena@csir.co.za Manyala, Ncholu I. Jafta, Charl Jeremy UCTD Thesis (PhD)--University of Pretoria, 2014. This work studied the manganese oxide based nanostructures for enhanced performance (power and energy densities) as electrode materials in lithium ion batteries (LIBs) and electrochemical capacitors (ECs). The high energy LiMn1.5Ni0.5O4 (LMN), the solid solution layered Li1.2Mn0.54Ni0.13Co0.13O2 (LMNC) and Al doped Li1.2Mn0.52Ni0.13Co0.13Al0.02O2 counterpart (LMNCA) cathode materials for LIB were synthesized by a modified Pechini one-step powder forming, microwave-assisted method. This novel synthesis route also included an intermediate step where samples were treated with microwave irradiation for a short period (~ 20 min) prior to the extended period (~ 8 hr) of annealing (~ 700 – 800 °C). It is proved, for the first time, that microwave irradiation is capable of tuning the Mn3+ content of the LMN spinel for enhanced electrochemical performance (i.e., high capacity, high capacity retention, excellent rate capability, and fast Li+ insertion/extraction kinetics). The CSIR for the Doctoral studentship Physics PhD Unrestricted 2021-05-04T11:52:56Z 2021-05-04T11:52:56Z 2014 2014-03 Thesis Jafta, CJ 2014, Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage, PhD Thesis, University of Pretoria, Pretoria, viewed yymmdd <http://hdl.handle.net/2263/79780> D14/9/24 http://hdl.handle.net/2263/79780 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 Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage |
| title | Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage |
| title_full | Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage |
| title_fullStr | Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage |
| title_full_unstemmed | Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage |
| title_short | Synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage |
| title_sort | synthetic strategies to improve the performance of manganese oxide based layered and spinel materials for electrochemical energy storage |
| topic | UCTD |
| url | http://hdl.handle.net/2263/79780 |