Document Detail


The Nature of Lithium-Battery Materials Under Oxygen Evolution Reaction Conditions.
MedLine Citation:
PMID:  23033962     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Transition metal oxide and phosphate materials, commonly used for lithium battery devices, are active as oxygen evolution reaction (OER) catalysts under alkaline and neutral solution conditions. Electrodes comprised of LiCoO(2) and LiCoPO(4) exhibit progressive deactivation and activation for OER catalysis, respectively, upon potential cycling at neutral pH. Deactivation of LiCoO(2) and activation of LiCoPO(4) are coincident with changes in surface morphology and composition giving rise to spinel-like and amorphous surface structures respectively. The amorphous surface structure of the activated LiCoPO(4) is compositional similar to that obtained from the electrodeposition of cobalt-oxidic materials from phosphate-buffered electrolyte solutions. These results highlight the importance of a combined structural and electrochemical analysis of the materials surface when assessing the true nature of the OER catalyst.
Authors:
Seung Woo Lee; Christopher E Carlton; Marcel Risch; Yogesh Surendranath; Shuo Chen; Sho Furutsuki; Atsuo Yamada; Daniel G Nocera; Yang Shao-Horn
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-3
Journal Detail:
Title:  Journal of the American Chemical Society     Volume:  -     ISSN:  1520-5126     ISO Abbreviation:  J. Am. Chem. Soc.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503056     Medline TA:  J Am Chem Soc     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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