New insights into low temperature properties of Li-rich layered cathode materials

Liu, G; Li, S; Mei, J; Liu, LM; Cui, Y; Liu, H

New insights into low temperature properties of Li-rich layered cathode materials

Liu, G Li, S Mei, J Liu, LM Cui, Y Liu, H

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Publication Type:: Journal Article
Citation:: Journal of Power Sources, 2017, 353 pp. 51 - 57
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Liu, G	en_US
dc.contributor.author	Li, S	en_US
dc.contributor.author	Mei, J	en_US
dc.contributor.author	Liu, LM	en_US
dc.contributor.author	Cui, Y	en_US
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	Journal of Power Sources, 2017, 353 pp. 51 - 57	en_US
dc.identifier.issn	0378-7753	en_US
dc.identifier.uri	http://hdl.handle.net/10453/124596
dc.description.abstract	© 2017 Since Li-ion batteries made of Li-rich layered materials might work at extreme environments, understanding the low temperature properties of Li-rich layered materials is of great importance. In this article, the low temperature properties and corresponding mechanism of Li-rich layered materials with a great amount of activated Li2MnO3are unraveled through a comparison of the low temperature characteristics of Li-rich layered materials with a small amount of activated Li2MnO3versus the former. Our findings indicate that in the electrode with a large amount of activated Li2MnO3,the sluggish kinetics of the electrode reaction at low temperatures suppresses greatly the Mn4+/Mn3+reduction reaction, leading to much smaller initial discharge capacity and much better cyclic performance compared with situations at room temperature. Moreover, the increasingly suppressed Mn4+/Mn3+reduction reaction stop the discharge voltage fading, which might mitigate the layered-to-spinel phase transformation.	en_US
dc.relation.ispartof	Journal of Power Sources	en_US
dc.relation.isbasedon	10.1016/j.jpowsour.2017.04.004	en_US
dc.subject.classification	Energy	en_US
dc.title	New insights into low temperature properties of Li-rich layered cathode materials	en_US
dc.type	Journal Article
utslib.citation.volume	353	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	0301 Analytical Chemistry	en_US
utslib.for	09 Engineering	en_US
utslib.for	03 Chemical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access
pubs.declined	2018-05-28T11:00:34.309+1000
pubs.publication-status	Published	en_US
pubs.volume	353	en_US

Abstract:

© 2017 Since Li-ion batteries made of Li-rich layered materials might work at extreme environments, understanding the low temperature properties of Li-rich layered materials is of great importance. In this article, the low temperature properties and corresponding mechanism of Li-rich layered materials with a great amount of activated Li2MnO3are unraveled through a comparison of the low temperature characteristics of Li-rich layered materials with a small amount of activated Li2MnO3versus the former. Our findings indicate that in the electrode with a large amount of activated Li2MnO3,the sluggish kinetics of the electrode reaction at low temperatures suppresses greatly the Mn4+/Mn3+reduction reaction, leading to much smaller initial discharge capacity and much better cyclic performance compared with situations at room temperature. Moreover, the increasingly suppressed Mn4+/Mn3+reduction reaction stop the discharge voltage fading, which might mitigate the layered-to-spinel phase transformation.

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http://hdl.handle.net/10453/124596