Abstract: The present disclosure relates to an offset elimination operation of an internal operational amplifier of a data driving circuit and relates to a technique that applies different offset elimination methods for each position of an operational amplifier.

Abstract: Provided is a method for chatting messages by topic based on subscription channel reference in a server. The method may include: receiving a message transmission request from a first user terminal corresponding to a first user to a second user terminal corresponding to a second user; extracting a subscription channel to be referred to by parsing the received message; reading a corresponding client handler with reference to a subscription channel stored in a subscription channel storage; and transmitting a message to the first and second user terminals through the read client handler.

Abstract: Provided is a method for chatting messages by topic based on subscription channel reference in a server. The method may include: receiving a message transmission request from a first user terminal corresponding to a first user to a second user terminal corresponding to a second user; extracting a subscription channel to be referred to by parsing the received message; reading a corresponding client handler with reference to a subscription channel stored in a subscription channel storage; and transmitting a message to the first and second user terminals through the read client handler.

Abstract: Provided are an organic electrolytic solution and a lithium battery including the organic electrolytic solution, wherein the organic electrolytic solution includes an organic solvent, a lithium salt, a borate compound represented by Formula 1 below, and an ionic metal complex represented by Formula 2 below: wherein R1, R2, and R3 are each independently a hydrogen; a C1-C5 alkyl group substituted or unsubstituted with a halogen; or a C1-C5 cyanoalkyl group substituted or unsubstituted with a halogen, at least one of the R1, R2, and R3 includes a cyanoalkyl group, Me is an element selected from the group consisting of transition metals and Groups 13 to 15 elements of the periodic table, M is a metal ion, a is an integer from 1 to 3, b is an integer from 1 to 3, s=b/a, p is an integer from 0 to 8, q is 0 or 1, r is an integer from 1 to 4, X1 and X2 are each independently O, S, or NR6, R4 and R6 are each independently a halogen, a C1-C5 alkyl group substituted or unsubstituted with a halogen, or a C1-C5 aryl

Abstract: An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery, the electrolyte including a lithium salt; an organic solvent; and an additive, wherein the additive includes LiPO2F2, and a compound represented by the following Chemical Formula 1:

Abstract: An electrolyte includes an organic solvent and a cyclic ester compound that is substituted with a sulfonate group.

Abstract: In an aspect, a rechargeable lithium battery that includes a positive electrode; negative electrode; a separator interposed between the positive electrode and the negative electrode and including a porous substrate and a coating layer formed on at least one side of the porous substrate; and an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided.

Abstract: An electrolyte for a rechargeable lithium battery including a lithium salt, a non-aqueous organic solvent, and an additive, wherein the additive includes a compound represented by Chemical Formula 1 and a rechargeable lithium battery including the same.

Abstract: An electrolyte for a lithium battery, a lithium battery including the electrolyte, and a method of preparing the electrolyte for a lithium battery. The electrolyte for a lithium battery includes a non-aqueous organic solvent; and about 0.1 wt % to about 1 wt % of lithium nitrate (LiNO3) based on a total weight of the non-aqueous organic solvent. By using the electrolyte for a lithium battery, lifespan cycle properties of the lithium battery may be improved.

Abstract: An electrolyte includes an organic solvent and a cyclic ester compound that is substituted with a sulfonate group.

Abstract: An electrolyte for a rechargeable lithium battery and a rechargeable lithium battery, the electrolyte including a lithium salt; an organic solvent; and an additive, wherein the additive includes LiPO2F2, and a compound represented by the following Chemical Formula 1:

Abstract: An organic electrolyte solution and a lithium battery using the same are disclosed. The organic electrolyte solution includes a lithium salt, an organic solution, a thiophene-based compound and a nitrile-based compound.

Abstract: Provided are an organic electrolytic solution and a lithium battery including the organic electrolytic solution, wherein the organic electrolytic solution includes an organic solvent, a lithium salt, a borate compound represented by Formula 1 below, and an ionic metal complex represented by Formula 2 below: wherein R1, R2, and R3 are each independently a hydrogen; a C1-C5 alkyl group substituted or unsubstituted with a halogen; or a C1-C5 cyanoalkyl group substituted or unsubstituted with a halogen, at least one of the R1, R2, and R3 includes a cyanoalkyl group, Me is an element selected from the group consisting of transition metals and Groups 13 to 15 elements of the periodic table, M is a metal ion, a is an integer from 1 to 3, b is an integer from 1 to 3, s=b/a, p is an integer from 0 to 8, q is 0 or 1, r is an integer from 1 to 4, X1 and X2 are each independently O, S, or NR6, R4 and R6 are each independently a halogen, a C1-C5 alkyl group substituted or unsubstituted with a halogen, or a C1-C5 ary

Abstract: An additive, the additive being for an electrolyte for a lithium secondary battery and represented by Chemical Formula 1: R1 to R4 each independently being hydrogen or a non-polar hydrocarbon group, is disclosed. An electrolyte, the electrolyte being for a lithium secondary battery and including: a non-aqueous organic solvent; a lithium salt; and the additive is also disclosed. A lithium secondary battery including: a positive electrode; a negative electrode facing the positive electrode; and a separator between the positive electrode and the negative electrode, the separator being impregnated with an electrolyte including the additive, is also disclosed.

Abstract: In an aspect, a rechargeable lithium battery that includes a positive electrode; negative electrode; a separator interposed between the positive electrode and the negative electrode and including a porous substrate and a coating layer formed on at least one side of the porous substrate; and an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided.

Abstract: An electrolyte additive represented by the following Chemical Formula 1, an electrolyte, and a rechargeable lithium battery are disclosed: In Chemical Formula 1, R1 to R3 and L1 to L3 are the same as defined in the detailed description.

Abstract: In an aspect, an additive for an electrolyte of a lithium battery, the additive including a compound including at least three nitrile moieties is provided.

Abstract: An additive for an electrolyte of a lithium battery including a disultone-based compound represented by Formula 1 below, an organic electrolyte solution including the additive, and a lithium battery including the organic electrolyte solution are provided: wherein, in Formula 1, A1, A2, A3, and A4 are each independently a substituted or unsubstituted C1-C5 alkylene group; a carbonyl group; or a sulfinyl group.

Abstract: A rechargeable lithium battery including a negative electrode including a negative active material, a positive electrode, and an electrolyte solution including an additive, wherein the negative active material includes a Si-based material included in an amount of about 1 to about 70 wt % based on the total amount of the negative electrode, and the additive includes fluoroethylene carbonate and a compound represented by Chemical Formula 1. In the above Chemical Formula 1, R1 to R3 are each independently a substituted or unsubstituted C2 to C5 alkylene group.

Abstract: An additive for an electrolyte of a lithium battery including a disultone-based compound represented by Formula 1 below, an organic electrolyte solution including the additive, and a lithium battery including the organic electrolyte solution are provided: wherein, in Formula 1, A1, A2, A3, and A4 are each independently a substituted or unsubstituted C1-C5 alkylene group; a carbonyl group; or a sulfinyl group.