Electrochemistry and structural chemistry of LiNiO[sub 2] (R[bar 3]m) for 4 volt secondary lithium cells
- Osaka City Univ. (Japan). Dept. of Applied Chemistry
The synthesis and characterization of LiNiO[sub 2] for a 4 V secondary lithium cell was done. The LiNiO[sub 2] was prepared by ten different methods and characterized by X-ray diffraction and electrochemical methods. LiNiO[sub 2] prepared from LiNO[sub 3] and NiCO[sub 3] [or Ni(OH)[sub 2]] exhibited more than 150 mAh/g of rechargeable capacity in the voltage range between 2.5 and 4.2 V in 1M LiClO[sub 4] propylene carbonate solution. The reaction mechanism was also examined and explained in terms of topotactic reaction. Lithium nickelate (III) (R3m; a[equals]2.88 [angstrom], c[equals]14.18 [angstrom] in hexagonal setting) was oxidized to nickel dioxide (R3m; a[equals]2.81 [angstrom], c[equals]13.47 [angstrom]) via Li[sub 1[minus]x]NiO[sub 2] (0.25(2) [le]x[le]0.55(2)) having a monoclinic lattice (C2/m). The nickel dioxide could be reversibly reduced to lithium nickelate(III). Factors affecting the electrochemical reactivity of LiNiO[sub 2] are given and the possibility of using LiNiO[sub 2] for 4 V secondary lithium cells is described.
- OSTI ID:
- 6164843
- Journal Information:
- Journal of the Electrochemical Society; (United States), Journal Name: Journal of the Electrochemical Society; (United States) Vol. 140:7; ISSN JESOAN; ISSN 0013-4651
- Country of Publication:
- United States
- Language:
- English
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ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CATHODES
CHALCOGENIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CHEMISTRY
CHLORATES
CHLORINE COMPOUNDS
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
HALOGEN COMPOUNDS
KINETICS
LITHIUM COMPOUNDS
METAL-NONMETAL BATTERIES
NICKEL COMPOUNDS
NICKEL OXIDES
NICKELATES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
SCATTERING
SYNTHESIS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION