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Electrochemical Sig...
Electrochemical Signatures of Potassium Plating and Stripping
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- Rizell, Josef, 1996 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Chrobak, Wojciech (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Mozhzhukhina, Nataliia, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Xiong, Shizhao, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Matic, Aleksandar, 1968 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Journal of the Electrochemical Society. - 1945-7111 .- 0013-4651. ; 171:2
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Alkali metal anodes can enable unmatched energy densities in next generation batteries but suffer from insufficient coulombic efficiencies. To deduce details about processes taking place during galvanostatic cycling, voltage profiles are commonly analyzed, however the interpretation is not straightforward as multiple processes can occur simultaneously. Here we provide a route to disentangle and interpret features of the voltage profile in order to build a mechanistic understanding on alkali metal stripping and deposition, by investigating potassium metal deposition as a model case where processes and reactions are exaggerated due to the high reactivity of potassium. In particular, the importance of separating SEI formation and nucleation to correctly estimate the energy barrier for nucleation is demonstrated. Further, we show how the native layer formed on alkali metal foils gives rise to strong features in the voltage profile and propose forming alkali metal electrode through electrodeposition to mitigate these effects.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- solid electrolyte interphase
- deposition
- alkali metal batteries
- voltage profile
- metal anodes
- nucleation
- potassium metal
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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