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US 9,755,239 B2Granted
Composition for positive electrode of lithium secondary battery and lithium secondary battery using same
AssigneeSamsung SDI Co., Ltd.
InventorDae-Sik Kim
Life of this patent
Estimating the term…
Abstract
Disclosed is a positive electrode composition for a lithium secondary battery and a secondary lithium battery using the same. The positive electrode composition for a lithium secondary battery includes a positive active material, a binder, and a compound represented by the following Chemical Formula 1. The above Chemical Formula 1 is the same as defined in the detailed description.
Claims18
A positive electrode composition, comprising:
- a positive active material;
- a binder;
- and
- a compound represented by the following Chemical Formula 1:
- wherein, in Chemical Formula 1,
- A is a C3 to C30 cyclic organic group,
- X is —C(═O)R, wherein R is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C3 to C30 heteroaryl group,
- Y is a substituent capable of forming a hydrogen bond, —OH, —NHR′, —NH(C═O)R″ or —NH(C═S)R′″, wherein R′, R″, and R′″ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C3 to C30 heteroaryl group,
- R1 and R2 are independently hydrogen, deuterium, a halogen, a cyano group, a nitro group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C2 to C10 alkenyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C20 arylamine group, a substituted or unsubstituted C5 to C20 heteroarylamine group, or a substituted or unsubstituted C2 to C30 heteroaryl group, or R1 and R2 are linked to each other to form a fused ring,
- 1≦a, 1≦b, 0≦n, and 0≦m,
- provided that n+m+a+b does not exceed valence of A,
- wherein the compound represented by the above Chemical Formula 1 is included in an amount of about 0.01 wt % to about 0.1 wt % based on 100 wt % of the positive electrode composition.
9 more elements
A lithium secondary battery, comprising
- a current collector and
- a positive electrode disposed on at least one side of the current collector;
- a negative electrode including a negative active material;
- a separator interposed between the positive electrode and negative electrode;
- and
- an electrolyte;
- wherein the positive electrode comprises:
- a positive active material;
- a binder;
- and
- a compound represented by the following Chemical Formula 1:
- wherein, in Chemical Formula 1,
- A is a C3 to C30 cyclic organic group,
- X is —C(═O)R, wherein R is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C3 to C30 heteroaryl group,
- Y is a substituent capable of forming a hydrogen bond, —OH, —NHR′, —NH(C═O)R″ or —NH(C═S)R′″, wherein R′, R″, and R′″ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, or a substituted or unsubstituted C3 to C30 heteroaryl group,
- R1 and R2 are independently hydrogen, deuterium, a halogen, a cyano group, a nitro group, a substituted or unsubstituted C1 to C10 amine group, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C1 to C10 alkoxy group, a substituted or unsubstituted C2 to C10 alkenyl group, a substituted or unsubstituted C3 to C10 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C6 to C20 arylamine group, a substituted or unsubstituted C5 to C20 heteroarylamine group, or a substituted or unsubstituted C2 to C30 heteroaryl group, or R1 and R2 are linked to each other to form a fused ring,
- 1≦a, 1≦b, 0≦n, and 0≦m,
- provided that n+m+a+b does not exceed valence of A,
- wherein the compound represented by the above Chemical Formula 1 is included in an amount of about 0.01 wt % to about 0.1 wt % based on 100 wt % of the positive electrode composition.
16 more elements
Dependencies are inferred from the claim text.