Performance of lithiummanganese oxide spinel electrodes in a lithium polymer electrolyte cell

• Published in: Journal of power sources Vol. 34; no. 1; pp. 39 - 49
• Main Authors: Macklin, W.J., Neat, R.J., Powell, R.J.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01.02.1991; Elsevier Sequoia
• Subjects: Applied sciences; Direct energy conversion and energy accumulation; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Exact sciences and technology; Performance evaluation; Temperature effect; Lithium; Polymer; Secondary cell; Electrochemical reactor; X ray diffraction; Electrodes; Charge discharge cycle; Electrolyte; Manganese IV Oxides; Spinel; Reversibility; Electrical characteristic
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/0378-7753(91)85022-O

The cycling performance of a lithiummanganese oxide spinel (prepared from MnO 2 and Li 2CO 3) has been investigated as a function of preparation temperature in a lithium polymer electrolyte cell. Excellent reversibility and high rate performance have been observed from a spinel phase prepared at 450 °C and of general formula Li x Mn 2− z O 4 (0 ⩽ x ⩽ 1.33, 0 ⩽ z ⩽ 0.33). This phase has a characteristic cubic lattice parameter of ∼ 8.19 Å: less than that found in the stoichiometric spinel material LiMn 2O 4.