Cobalt oxalate nanoribbons as negative-electrode material for lithium-ion batteries

Aragon, M.J., Leon, B., Vicente, C.P., Tirado, J.L., Chadwick, A.V., Berko, A., Beh, S.-Y. (2009) Cobalt oxalate nanoribbons as negative-electrode material for lithium-ion batteries. Chemistry of Materials, 21 (9). pp. 1834-1840. ISSN 0897-4756. (doi:10.1021/cm803435p) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://dx.doi.org/10.1021/cm803435p

Abstract

Orthorhombic cobalt oxalate dihydrate has been prepared in the form of nanoribbons by a reverse micelles method. The crystallographic structure of the resulting solid differs from the monoclinic massive product. A careful dehydration of the nanocrystals leads to anhydrous cobalt oxalate in which the nanoribbon-shaped particles are preserved and Co2+ ions are located in a centrosymmetric environment. CoC2O4 is used for the first time as high-capacity lithium storage materials with improved rate performance. The anhydrous solids react with lithium, leading to metallic cobalt and lithium oxalate, as shown by XAS and FTIR measurements. The new electrode material displays reversible capacities close to 900 mA h g-1 between 0 and 2 V versus lithium by a novel reaction mechanism which involves cobalt reduction-reoxidation. © 2009 American Chemical Society.

Item Type: Article
DOI/Identification number: 10.1021/cm803435p
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - Chem. Mater. [Field not mapped to EPrints] AD - Laboratorio de Química Inorgánica, Universidad de Córdoba, Edificio C3, Campus de Rabanales, 14071 Córdoba, Spain [Field not mapped to EPrints] AD - Functional Materials Group, School of Physical Sciences, University of Kent, Canterbury, Kent CT2 7NR, United Kingdom [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Centrosymmetric, Cobalt oxalate, Crystallographic structure, Dihydrate, Electrode material, FTIR measurements, High-capacity, Lithium storages, Lithium-ion battery, Metallic cobalt, Nanoribbon, Nanoribbons, Rate performance, Re-oxidation, Reaction mechanism, Reverse micelles method, Reversible capacity, Shaped particles, Cobalt, Fourier transform infrared spectroscopy, Lithium, Lithium alloys, Lithium compounds, Electrochemical electrodes
Subjects: Q Science > QD Chemistry > QD478 Solid State Chemistry
Q Science > QD Chemistry > Analytical Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 13 Aug 2015 11:48 UTC
Last Modified: 29 May 2019 15:55 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50186 (The current URI for this page, for reference purposes)
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