The use of acetates as precursors for the low-temperature synthesis of LiMn sub 2 O sub 4 and LiCoO sub 2 intercalation compounds. [rechargeable lithium electrodes]

Journal Article · Sun Sep 01 04:00:00 EDT 1991 · Journal of Solid State Chemistry; (United States)

OSTI ID:7291772

Barboux, P ^[1]; Tarascon, J M; Shokoohi, F K ^[2]

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1. CNRS, Paris (France)
2. Univ. Pierre et Marie Curie, Paris (France)

The spinel LiMn{sub 2}O{sub 4} and layered LiMO{sub 2} (M = Co, Ni) compounds, which are of potential interest for Li intercalation applications, have been synthesized at low temperatures from aqueous solutions of hydroxides, nitrate, and acetate salts. These phases can be prepared in bulk or thick-film form with their crystallization temperature being strongly dependent on oxygen pressure, annealing time, and Li/transition-metal (M) ratio. For instance, the authors succeeded in preparing the spinel Li{sub x}Mn{sub 2}O{sub 4}(x = 1) at temperatures as low as 300C, whereas a temperature of 500C was needed to obtain the LiCoO{sub 2} phase. Rechargeable Li batteries using the LiMn{sub 2}O{sub 4} powders, synthesized at low temperatures, show good capacity and good cycling behavior. Larger amounts of Li(x{gt}1) cannot be directly introduced into the spinel phase by heat treatment under less oxidizing atmospheres obtained by use of mixtures of argon and oxygen.

• OSTI ID: 7291772
• Journal Information: Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 94:1; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ABSORPTION SPECTROSCOPY
ACETATES
ALKALI METAL COMPOUNDS
ANNEALING
ARGON
BRAGG REFLECTION
CARBOXYLIC ACID SALTS
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMISTRY
COBALT COMPOUNDS
COBALT OXIDES
COHERENT SCATTERING
DATA
DIFFERENTIAL THERMAL ANALYSIS
DIFFRACTION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELECTRON MICROSCOPY
ELEMENTS
EXPERIMENTAL DATA
FLUIDS
GASES
HEAT TREATMENTS
INFORMATION
INFRARED SPECTRA
LITHIUM COMPOUNDS
MANGANESE COMPOUNDS
MANGANESE OXIDES
MICROSCOPY
MILLER INDICES
MINERALS
NONMETALS
NUMERICAL DATA
OXIDE MINERALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
RARE GASES
REFLECTION
SCATTERING
SPECTRA
SPECTROSCOPY
SPINELS
SYNTHESIS
TEMPERATURE DEPENDENCE
TEMPERATURE EFFECTS
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION