The accumulation of Li2CO3 in a Li–O2 battery with dual mediators
One of the most important challenges facing long cycle life Li–O2 batteries is solvent degradation. Even the most stable ethers, such as CH3O(CH2CH2O)CH3, degrade to form products including Li2CO3, which accumulates in the pores of the gas diffusion electrode on cycling leading to polarisation and c...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Royal Society of Chemistry
2023
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| _version_ | 1811139725559332864 |
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| author | Jenkins, M Dewar, D Nimmo, T Chau, C Gao, X Bruce, PG |
| author_facet | Jenkins, M Dewar, D Nimmo, T Chau, C Gao, X Bruce, PG |
| author_sort | Jenkins, M |
| collection | OXFORD |
| description | One of the most important challenges facing long cycle life Li–O2 batteries is solvent degradation. Even the most stable ethers, such as CH3O(CH2CH2O)CH3, degrade to form products including Li2CO3, which accumulates in the pores of the gas diffusion electrode on cycling leading to polarisation and capacity fading. In this work, we examine the build-up and distribution of Li2CO3 within the porous gas diffusion electrode during cycling and its link to the cell failure. We also demonstrate that the removal of Li2CO3 by a redox mediator can partially recover the cell performance and extend the cycle life of a Li–O2 battery. |
| first_indexed | 2024-03-07T08:11:14Z |
| format | Journal article |
| id | oxford-uuid:81556711-05e5-433f-8923-a1a49592c3c5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-09-25T04:10:39Z |
| publishDate | 2023 |
| publisher | Royal Society of Chemistry |
| record_format | dspace |
| spelling | oxford-uuid:81556711-05e5-433f-8923-a1a49592c3c52024-06-24T10:29:28ZThe accumulation of Li2CO3 in a Li–O2 battery with dual mediatorsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:81556711-05e5-433f-8923-a1a49592c3c5EnglishSymplectic ElementsRoyal Society of Chemistry2023Jenkins, MDewar, DNimmo, TChau, CGao, XBruce, PGOne of the most important challenges facing long cycle life Li–O2 batteries is solvent degradation. Even the most stable ethers, such as CH3O(CH2CH2O)CH3, degrade to form products including Li2CO3, which accumulates in the pores of the gas diffusion electrode on cycling leading to polarisation and capacity fading. In this work, we examine the build-up and distribution of Li2CO3 within the porous gas diffusion electrode during cycling and its link to the cell failure. We also demonstrate that the removal of Li2CO3 by a redox mediator can partially recover the cell performance and extend the cycle life of a Li–O2 battery. |
| spellingShingle | Jenkins, M Dewar, D Nimmo, T Chau, C Gao, X Bruce, PG The accumulation of Li2CO3 in a Li–O2 battery with dual mediators |
| title | The accumulation of Li2CO3 in a Li–O2 battery with dual mediators |
| title_full | The accumulation of Li2CO3 in a Li–O2 battery with dual mediators |
| title_fullStr | The accumulation of Li2CO3 in a Li–O2 battery with dual mediators |
| title_full_unstemmed | The accumulation of Li2CO3 in a Li–O2 battery with dual mediators |
| title_short | The accumulation of Li2CO3 in a Li–O2 battery with dual mediators |
| title_sort | accumulation of li2co3 in a li o2 battery with dual mediators |
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