Abstract:
An electrode assembly includes an electrode stack structure including a first electrode assembly sheet having flexibility and a second electrode assembly sheet having flexibility, where and the first and second electrode assemblies are alternately disposed one on another, and a binding unit which binds a portion of the electrode stack structure. The first electrode assembly sheet includes first and second separator films disposed to face each other, a first electrode sheet which is disposed between the first and second separator films and includes a first electrode collector and a first active material layer, and a first confining unit which restricts a movement of the first electrode sheet with respect to the first and second separator films.
Abstract:
A lithium secondary battery includes: a positive electrode; an negative electrode; and an electrolyte between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, the electrolyte includes a lithium salt, a non-aqueous solvent, and a trialkoxyalkylsilane compound represented by Formula 2, and an amount of the trialkoxyalkylsilane compound in the electrolyte is about 0.1 weight percent to about 5 weight percent based on a total weight of the electrolyte: wherein, in Formula 1 and Formula 2, x, y, z, M, A, R1 to R3, and Ar are as defined as the specification.
Abstract:
An organic electrolyte solution includes a lithium salt; an organic solvent; and a fluorine-containing phosphate compound represented by Formula 1: wherein, in Formula 1, R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, and R15 are each independently a hydrogen atom, a fluorine atom, a C1-C5 alkyl group substituted or not substituted with a halogen atom, a C4-C10 cycloalkyl group substituted or not substituted with a halogen atom, a C6-C10 aryl group substituted or not substituted with a halogen atom, a C2-C10 heteroaryl group substituted or not substituted with a halogen atom, or a C2-C10 alkenyl group substituted or not substituted with a halogen atom, at least one of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, or R15 is a fluorine atom, and at least one phenyl group does not have a fluorine atom.
Abstract:
A flexible electrochemical device in which a plurality of electrode assemblies is electrically connected to each other so that the flexible electrochemical device may be repeatedly bent, includes at least two electrode assemblies that are arranged separate from each other and a casing member that packs the at least two electrode assemblies and includes at least two accommodation portions in which electrode assemblies are individually received, and a connecting portion that connects the at least two adjacent accommodation portions where a path between a conductive line that electrically connects at least two electrode assemblies together and an electrolyte is defined in the connecting portion.
Abstract:
An anode active material includes: a core including a metal or a metalloid that can incorporate and deincorporate lithium ions; and a plurality of coating layers on a surface of the core, each coating layer including a metal oxide, an amorphous carbonaceous material, or combination thereof. Also, a lithium battery including the anode active material, and a method of preparing the anode active material.
Abstract:
A lithium secondary battery including: a positive electrode; a negative electrode; and an electrolyte between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, the electrolyte includes a lithium salt; a non-aqueous solvent; and a difluorosilane compound represented by Formula 2, and an amount of the difluorosilane compound is about 5 weight percent, based on a total weight of the electrolyte LixNiyM1-yO2-zAz Formula 1
Abstract:
A lithium secondary battery includes: a positive electrode; a negative electrode; and an electrolyte disposed between the positive electrode and the negative electrode, wherein the positive electrode includes a positive active material represented by Formula 1, the electrolyte includes a lithium salt, a non-aqueous solvent, and a phosphate compound represented by Formula 2, and an amount of the phosphate compound is less than about 3 weight percent based on a total weight of the electrolyte, LixNiyM1-yO2-zAz Formula 1 wherein, in Formula 1, 0.9≤x≤1.2, 0.7≤y≤0.98, and 0≤z
Abstract:
An electrochemical device includes a plurality of electrode assemblies arranged spaced apart from each other in a same direction and a casing member which packages the electrode assemblies, in which the casing member includes a plurality of accommodation portions which accommodates the electrode assemblies, respectively, and a connecting portion which connects between two adjacent accommodation portions, a thickness of the connecting portion is less than a thickness of the accommodation portions, and the connecting portion is bent defining a curved bending portion.