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Resolving a discrepancy in diffusion potentials, with a case study for Li-Ion batteries

Abstract:

Overpotentials induced by liquid-phase composition variation can be important when electrochemical devices are operated at high current. The dominant models that describe such ‘diffusion potentials’ are Nernst–Planck (dilute-solution) theory and Onsager–Stefan–Maxwell (concentrated-solution) theory. Nernst–Planck flux laws emerge from Onsager–Stefan–Maxwell laws in the limit of high electrolyte dilution, and the material properties involved come into agreement. The two models yield different ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1149/2.0451608jes

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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
Publisher:
Electrochemical Society Publisher's website
Journal:
Journal of the Electrochemical Society Journal website
Publication date:
2016-05-01
Acceptance date:
2016-04-22
DOI:
Source identifiers:
623923
Pubs id:
pubs:623923
UUID:
uuid:cd2354c9-854a-4400-b006-f26f499470b4
Local pid:
pubs:623923
Deposit date:
2016-05-25

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