Performance characteristics of LiMn2O4/polymer/carbon electrochemical cells

Ibrahim, Z.A. (2001) Performance characteristics of LiMn2O4/polymer/carbon electrochemical cells. pp. 722-725.

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<p>This paper discusses the performance characteristics of two types of cells of configuration LiMn<sub>2</sub>O<sub>4</sub>/chitosan/C. LiMn<sub>2</sub>O<sub>4</sub> was prepared by the sol&ndash;gel method. The precursor obtained was heated at different temperatures to form LiMn<sub>2</sub>O<sub>4</sub>. The performance of the LiMn<sub>2</sub>O<sub>4</sub> compound prepared at different temperatures was investigated by studying the discharge characteristics of the LiMn<sub>2</sub>O<sub>4</sub>/LiClO<sub>4</sub>&ndash;EC-DMC/C cells. It was found that the cell utilising LiMn<sub>2</sub>O<sub>4</sub> obtained by heating the precursor at 600&deg;C, for 6&nbsp;h gave the best performance. The LiMn<sub>2</sub>O<sub>4</sub> compound was then used to fabricate cells using a chitosan-based electrolyte. In one of the cells, the chitosan polymer was doped with 32% salt to represent a salt-in-polymer electrolyte and in the other, the polymer was doped with 75% salt to form a polymer-in-salt electrolyte. The room temperature conductivity for the salt-in-polymer electrolyte was 1.3&times;10<sup>&minus;5</sup>&nbsp;S&nbsp;cm<sup>&minus;1</sup> and that of the polymer-in-salt electrolyte was 3.9&times;10<sup>&minus;3</sup>&nbsp;S&nbsp;cm<sup>&minus;1</sup>. The cathode of all cells consists 80% active material 10% binder and 10% carbon by weight. The characteristics of the cells were measured and analysed.</p> <!-- articleText -->

Item Type: Article
Uncontrolled Keywords: Performance characteristics of LiMn2O4/polymer/carbon electrochemical cells
Subjects: Q Science
Depositing User: MR. ADNAN YAHYA
Date Deposited: 23 Apr 2008
Last Modified: 10 May 2008

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