Polyoxometalates as redox mediators for Li-air batteries
This report will walk through the process of developing polyoxometalates (POMs) to be used as redox mediators in Li – air batteries.Three POMs; (TBA)4[PW11VO40], (TBA)4[PMo11VO¬40] and (TBA)5[PMo10V2O40] were successfully synthesised and electrochemically characterised. With the redox chemistry of t...
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| Format: | Thesis (University of Nottingham only) |
| Language: | English |
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2019
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| Online Access: | https://eprints.nottingham.ac.uk/59339/ |
| _version_ | 1848799613374431232 |
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| author | Castle, Jack |
| author_facet | Castle, Jack |
| author_sort | Castle, Jack |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This report will walk through the process of developing polyoxometalates (POMs) to be used as redox mediators in Li – air batteries.Three POMs; (TBA)4[PW11VO40], (TBA)4[PMo11VO¬40] and (TBA)5[PMo10V2O40] were successfully synthesised and electrochemically characterised. With the redox chemistry of the POMs determined, they were implemented into working cells.
Two of the three POMs resulted in an increase in capacity but had little to no effect on the reduction of the overpotential. One POM was taken forward for testing within a pressure cell, with the resulting data providing information regarding electronic efficiency and side reactions within the cell during the discharge process.
It was determined that in order for POMs to be used as redox mediators, some degree of optimisation will be necessary, more specifically, tuning the redox chemistry to potentials more closely associated with Li2O2 oxidation and enhancing the solubility of the compound. |
| first_indexed | 2025-11-14T20:38:27Z |
| format | Thesis (University of Nottingham only) |
| id | nottingham-59339 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:38:27Z |
| publishDate | 2019 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-593392025-02-28T14:41:28Z https://eprints.nottingham.ac.uk/59339/ Polyoxometalates as redox mediators for Li-air batteries Castle, Jack This report will walk through the process of developing polyoxometalates (POMs) to be used as redox mediators in Li – air batteries.Three POMs; (TBA)4[PW11VO40], (TBA)4[PMo11VO¬40] and (TBA)5[PMo10V2O40] were successfully synthesised and electrochemically characterised. With the redox chemistry of the POMs determined, they were implemented into working cells. Two of the three POMs resulted in an increase in capacity but had little to no effect on the reduction of the overpotential. One POM was taken forward for testing within a pressure cell, with the resulting data providing information regarding electronic efficiency and side reactions within the cell during the discharge process. It was determined that in order for POMs to be used as redox mediators, some degree of optimisation will be necessary, more specifically, tuning the redox chemistry to potentials more closely associated with Li2O2 oxidation and enhancing the solubility of the compound. 2019-12-13 Thesis (University of Nottingham only) NonPeerReviewed application/pdf en arr https://eprints.nottingham.ac.uk/59339/1/Thesis%20final.pdf Castle, Jack (2019) Polyoxometalates as redox mediators for Li-air batteries. MSc(Res) thesis, University of Nottingham. polyoxometalates Lithium-Air batteries energy storage |
| spellingShingle | polyoxometalates Lithium-Air batteries energy storage Castle, Jack Polyoxometalates as redox mediators for Li-air batteries |
| title | Polyoxometalates as redox mediators for Li-air batteries |
| title_full | Polyoxometalates as redox mediators for Li-air batteries |
| title_fullStr | Polyoxometalates as redox mediators for Li-air batteries |
| title_full_unstemmed | Polyoxometalates as redox mediators for Li-air batteries |
| title_short | Polyoxometalates as redox mediators for Li-air batteries |
| title_sort | polyoxometalates as redox mediators for li-air batteries |
| topic | polyoxometalates Lithium-Air batteries energy storage |
| url | https://eprints.nottingham.ac.uk/59339/ |