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Micro-scale graded electrodes for improved dynamic and cycling performance of Li-ion batteries

Abstract:

Li-ion battery cathodes based on LiFePO4 are fabricated by a layer-by-layer spray printing method with a continuous through thickness gradient of active material, conductive carbon, and binder. Compared with cathodes with the more usual homogeneous distribution, but with the same average composition, both C-rate and capacity degradation performance of the graded electrodes are significantly improved. For example at 2C, graded cathodes with an optimized material distribution have 15% and 31% h...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's Version

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Publisher copy:
10.1016/j.jpowsour.2018.12.021

Authors


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Institution:
University of Oxford
Division:
MPLS Division
Department:
Materials
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Engineering Science
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Engineering Science
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Materials
Oxford college:
St Catherines College
Publisher:
Elsevier Publisher's website
Journal:
Journal of Power Sources Journal website
Volume:
413
Pages:
59-67
Publication date:
2018-12-15
Acceptance date:
2018-12-09
DOI:
ISSN:
0378-7753
Pubs id:
pubs:956312
URN:
uri:ece1973d-d70a-4971-8cd9-763de2a2dd81
UUID:
uuid:ece1973d-d70a-4971-8cd9-763de2a2dd81
Local pid:
pubs:956312

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