An investigation of spinel-related and orthorhombic LiMnO[sub 2] cathodes for rechargeable lithium batteries

Journal Article · Sun May 01 00:00:00 EDT 1994 · Journal of the Electrochemical Society; (United States)

DOI:https://doi.org/10.1149/1.2054893· OSTI ID:7200890

Gummow, R J; Thackeray, M M ^[1]

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1. CSIR, Pretoria (South Africa). Div. of Materials Science and Technology

Cathode materials that have been synthesized by reduction of lithium-manganese-oxide and manganese-oxide precursors with hydrogen at 300 to 350 C, and with carbon at 600 C have been evaluated in rechargeable lithium cells. The cathodes which initially have a composition close to LiMnO[sub 2] contain structures related to the lithiated-spinel phase Li[sub 2][Mn[sub 2]]O[sub 4] and/or orthorhombic LiMnO[sub 2]. The orthorhombic LiMnO[sub 2] component transforms gradually to a spinel structure on cycling. These cathodes are significantly more tolerant to repeated lithium insertion and extraction, when cycled over both the 4 and 3 V regions, than a standard Li[sub x][Mn[sub 2]]O[sub 4] spinel electrode (0 < x < 2).

• OSTI ID: 7200890
• Journal Information: Journal of the Electrochemical Society; (United States), Vol. 141:5; ISSN 0013-4651
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
CATHODES
FABRICATION
PERFORMANCE TESTING
ELECTRIC BATTERIES
LITHIUM COMPOUNDS
MANGANATES
CLATHRATES
MORPHOLOGY
ALKALI METAL COMPOUNDS
ELECTROCHEMICAL CELLS
ELECTRODES
MANGANESE COMPOUNDS
OXYGEN COMPOUNDS
TESTING
TRANSITION ELEMENT COMPOUNDS
250903* - Energy Storage- Batteries- Materials
Components
&amp; Auxiliaries
250902 - Energy Storage- Batteries- Performance &amp; Testing