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Combustion synthesis and electrochemical performance of Li2FeSiO4/C cathode material for lithium-ion batteries
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
2012 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 205, 456-462 p.Article in journal (Refereed) Published
Abstract [en]

A novel preparation technique was developed for synthesizing Li2FeSiO4/C nanoparticles through combustion of reaction mixtures containing silicon source. Li and Fe sources that operate as oxidizers and sucrose that act as a fuel. A systematic investigation of the synthesis parameters, such as the effect of the fuel content, on purity, morphology and electrochemical properties of the samples was performed. The samples were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), specific surface area (BET) and electrochemical measurements, respectively. Among the synthesized cathode materials, Li2FeSiO4 obtained with 1.5 mol of sucrose, showed the best electrochemical performance in terms of discharge capacity, cycling stability and rate capability. Discharge capacity of 130 mAh/g at C/20, 88 mAh/g at C/2 and 44 mAh/g at 2C were obtained with no capacity fading after 50 cycles.

Place, publisher, year, edition, pages
2012. Vol. 205, 456-462 p.
Keyword [en]
Lithium-ion batteries, Lithium iron orthosilicate, Combustion synthesis
National Category
Engineering and Technology Inorganic Chemistry
Research subject
Chemistry with specialization in Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-172804DOI: 10.1016/j.jpowsour.2012.01.079ISI: 000301828300060OAI: oai:DiVA.org:uu-172804DiVA: diva2:516357
Funder
StandUp
Available from: 2012-04-18 Created: 2012-04-16 Last updated: 2017-12-07Bibliographically approved

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Dahbi, MohammedGustafsson, Torbjörn

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