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Rapid determination...
Rapid determination of solid-state diffusion coefficients in Li-based batteries via intermittent current interruption method
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- Chien, Yu-Chuan, 1990- (författare)
- Uppsala universitet,Strukturkemi
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- Liu, Haidong, Dr. (författare)
- Uppsala universitet,Strukturkemi
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- Menon, Ashok S. (författare)
- Uppsala universitet,Strukturkemi
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- Brant, William R. (författare)
- Uppsala universitet,Strukturkemi
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- Brandell, Daniel, 1975- (författare)
- Uppsala universitet,Strukturkemi
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Lacey, Matthew J. (författare)
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(creator_code:org_t)
- Springer Nature, 2023
- 2023
- Engelska.
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Ingår i: Nature Communications. - : Springer Nature. - 2041-1723. ; 14:1
- Relaterad länk:
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The galvanostatic intermittent titration technique (GITT) is considered the go-to method for determining the Li+ diffusion coefficients in insertion electrode materials. However, GITT-based methods are either time-consuming, prone to analysis pitfalls or require sophisticated interpretation models. Here, we propose the intermittent current interruption (ICI) method as a reliable, accurate and faster alternative to GITT-based methods. Using Fick’s laws, we prove that the ICI method renders the same information as the GITT within a certain duration of time since the current interruption. Via experimental measurements, we also demonstrate that the results from ICI and GITT methods match where the assumption of semi-infinite diffusion applies. Moreover, the benefit of the non-disruptive ICI method to operando materials characterization is exhibited by correlating the continuously monitored diffusion coefficient of Li+ in a LiNi0.8Mn0.1Co0.1O2-based electrode to its structural changes captured by operando X-ray diffraction measurements.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- lithium ion batteries
- Electrochemistry
- Diffusion coefficient
- Chemistry with specialization in Physical Chemistry
- Kemi med inriktning mot fysikalisk kemi
- Kemi
- Chemistry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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