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Title: Lithium storage using conversion reaction in maghemite and hematite
Authors: Hariharan, S.
Saravanan, K. 
Balaya, P. 
Issue Date: 2010
Citation: Hariharan, S., Saravanan, K., Balaya, P. (2010). Lithium storage using conversion reaction in maghemite and hematite. Electrochemical and Solid-State Letters 13 (9) : A132-A134. ScholarBank@NUS Repository.
Abstract: We report here on the lithium storage performance of α - and γ -Fe2 O3, undergoing conversion reaction at C/10 and 2C. Both α - and γ -Fe2 O3 transform to nanostructured Fe/ Li2 O composite during the first discharge, while the first charge results in the formation of nanosized γ -Fe2 O3. Such a transition from α -Fe2 O3 to γ -Fe2 O3 is attributed to its thermodynamics at the nanosize. Better storage performance of γ -Fe2 O3 at 2C compared with α -Fe2 O3 is attributed to the formation of highly crystalline, nanosized γ -Fe2 O 3. Apart from the reported inherent electronic conductivity of α -Fe2 O3, the thermodynamics at the nanosize is also found to be one of the rate-limiting factors. © 2010 The Electrochemical Society.
Source Title: Electrochemical and Solid-State Letters
ISSN: 10990062
DOI: 10.1149/1.3458648
Appears in Collections:Staff Publications

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