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Strategies for Miti...
Strategies for Mitigating Dissolution of Solid Electrolyte Interphases in Sodium-Ion Batteries
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- Ma, Le Anh, 1992- (författare)
- Uppsala universitet,Strukturkemi
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- Naylor, Andrew J. (författare)
- Uppsala universitet,Strukturkemi
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- Nyholm, Leif, 1961- (författare)
- Uppsala universitet,Oorganisk kemi
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- Younesi, Reza (författare)
- Uppsala universitet,Strukturkemi
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(creator_code:org_t)
- 2021-01-08
- 2021
- Engelska.
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Ingår i: Angewandte Chemie International Edition. - : John Wiley & Sons. - 1433-7851 .- 1521-3773. ; 60:9, s. 4855-4863
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The interfacial reactions in sodium-ion batteries (SIBs) are not well understood yet. The formation of a stable solid electrolyte interphase (SEI) in SIBs is still challenging due to the higher solubility of the SEI components compared to lithium analogues. This study therefore aims to shed light on the dissolution of SEI influenced by the electrolyte chemistry. By conducting electrochemical tests with extended open circuit pauses, and using surface spectroscopy, we determine the extent of self-discharge due to SEI dissolution. Instead of using a conventional separator, beta-alumina was used as sodium-conductive membrane to avoid crosstalk between the working and sodium-metal counter electrode. The relative capacity loss after a pause of 50 hours in the tested electrolyte systems ranges up to 30 %. The solubility of typical inorganic SEI species like NaF and Na2CO3 was determined. The electrolytes were then saturated by those SEI species in order to oppose ageing due to the dissolution of the SEI.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- Sodium-ion batteries
- solid electrolyte interphase
- Kemi med inriktning mot oorganisk kemi
- Chemistry with specialization in Inorganic Chemistry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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