Back to results
US 11,329,287 B2Granted
Cathode additive, preparation method thereof, and cathode and lithium secondary battery comprising the same
AssigneeLG Energy Solution, Ltd.
InventorsJungmin Han, Byungchun Park, Ji Hye Kim, Wang Mo Jung
Life of this patent
Estimating the term…
Abstract
The present invention relates to a cathode additive, a method for preparing the same, and a cathode and a lithium secondary battery including the same. More specifically, one embodiment of the present invention provides a cathode additive that can offset an irreversible capacity imbalance, increase the initial charge capacity of a cathode, and simultaneously inhibit the generation of gas in a battery.
Claims15
A cathode additive composition represented by the following Chemical Formula 1:
- {x(Li2+aNibM1−bO2+c)}.{y(NiO)}.{z(Li2O)}.{wLi5MO4} [Chemical Formula 1]
- wherein, in Chemical Formula 1,
- M is one or more metal atoms forming a divalent cation or a trivalent cation,
- −0.2≤a≤0.2, 0.5≤b≤1.0, −0.2≤c≤0.2,
- 0.6≤x≤1.0, 0<y≤0.15, 0<z≤0.15, 0≤w≤0.1, x+y+z+w=1,
- provided that when b=1.0, 0<w≤0.1, and when w=0, 0.5≤b<1.0,
- wherein a structure of the cathode additive composition includes a core including the (Li2+aNibM1−bO2+c), (NiO) and (Li2O), and a coating layer including the Li5MO4.
4 more elements
Dependencies are inferred from the claim text.