Cathode material for lithium secondary battery and method for pr

Details Cathode material for lithium secondary battery and method for pr Cathode material for lithium secondary battery and method for pr

1996-07-01

1997-10-14

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429218, H01M 452

Patent

active

056770863

ABSTRACT:
The invention provides a cathode material for lithium secondary battery containing lithiated nickel dioxide having excellent charge/discharge characteristics and a process for producing the lithiated nickel dioxide, and a lithium secondary battery. That is, the cathode material for lithium secondary battery contains lithiated nickel dioxide having .alpha.-NaFeO.sub.2 structure and shows a coulomb efficiency of 85% or higher at the first charging and discharging, and the process for producing lithiated nickel dioxide comprises dispersing a nickel compound in a lithium nitrate solution, then evaporating the solvent to obtain a mixture of lithium nitrate and the nickel compound and firing the mixture in an atmosphere containing oxygen.

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J.R. Dahn, "Structure and Electrochemistry of Li.sub.1.+-.l NIO.sub.2 and a new Li.sub.2 NiO.sub.2 phase with the Ni(OH).sub.2 structure" Solid State Ionics vol. 44, pp. 87-97 (1990), (no month available).
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