Abstract: Disclosed are an electrolyte membrane of a membrane-electrode assembly including an electronic insulation layer, which greatly improves the durability of the electrolyte membrane, and a method of preparing the same. The electrolyte membrane includes an ion exchange layer and an electronic insulation layer provided on the ion exchange layer, and the electronic insulation layer includes one or more catalyst complexes, and a second ionomer Particularly, each of the one or more catalyst complex includes a catalyst particle and a first ionomer coated on the entirety or a portion of the surface of the catalyst particle, and the one or more catalyst complexes are dispersed the second ionomer.

Abstract: A microelectromechanical system (MEMS) structure and method of forming the MEMS device, including forming a first metallization structure over a complementary metal-oxide-semiconductor (CMOS) wafer, where the first metallization structure includes a first sacrificial oxide layer and a first metal contact pad. A second metallization structure is formed over a MEMS wafer, where the second metallization structure includes a second sacrificial oxide layer and a second metal contact pad. The first metallization structure and second metallization structure are then bonded together. After the first metallization structure and second metallization structure are bonded together, patterning and etching the MEMS wafer to form a MEMS element over the second sacrificial oxide layer. After the MEMS element is formed, removing the first sacrificial oxide layer and second sacrificial oxide layer to allow the MEMS element to move freely about an axis.

Abstract: In an aspect, a rechargeable lithium battery that includes a positive electrode including a composite positive active material; a negative electrode including a carbon-based negative active material; an electrolyte including an additive, and a lithium salt and an organic solvent, wherein a passivation film may be on a surface of the negative electrode of the rechargeable lithium battery.

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 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: 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: Disclosed is an electrolyte for a rechargeable lithium battery including an organic solvent; a lithium salt; a flame retardant; and at least one acrylate compound having a fluorinated alkyl group. The electrolyte for a rechargeable battery may provide a rechargeable lithium battery having flame-retardant characteristics without decrease of cycle-life and battery performance.

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 electrolyte for a rechargeable lithium battery that includes a lithium salt and a non-aqueous organic solvent, wherein the non-aqueous organic solvent includes a fluoro-based solvent represented by the following Chemical Formula 1, and a rechargeable lithium battery including the same. R—O—R???Chemical Formula 1 In Chemical Formula 1, R and R? are independently a substituted or unsubstituted C1 to C6 alkyl group, or a substituted or unsubstituted C1 to C6 fluoroalkyl group, wherein at least one of R and R? is the substituted or unsubstituted C1 to C6 fluoroalkyl group, and a substitution ratio of fluoro in the fluoro-based solvent represented by the Chemical Formula 1 may range from more than about 0% to less than or equal to about 50%.

Abstract: In one aspect, a rechargeable lithium battery comprising a non-aqueous electrolyte including an organic solvent; a lithium salt and a substituted 2-fluoroalkoxy-1,3,2-dioxaphospholane 2-oxide is provided. The 2-fluoroalkoxy-1,3,2-dioxaphospholane 2-oxide can be a compound represented by the following Chemical Formula 1.

Abstract: A separator for a rechargeable lithium battery including a tungsten-doped vanadium oxide (VO2) phase transition material and the rechargeable lithium battery including the separator. Here, an explosion possibility of the rechargeable lithium battery including the separator may be prevented and delayed when the battery is excessively heated.

Abstract: Disclosed is a separator having surface energy of about 45 mN to about 50 mN/m which can be prepared by radiating plasma on a polymer film under a current of from about 1800 mA to about 2000 mA and electric power of from about 2750 W to about 3000 W. Further disclosed is a rechargeable battery comprising the separator having a surface energy of about 45 mN to about 50 mN/m.

Abstract: An electrode for a lithium secondary battery, including a surface having surface roughness of about 800 nm to about 1000 nm, and a lithium secondary battery including the same. In one embodiment, the lithium secondary battery has improved cycle-life characteristics.

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 an electrolyte including a lithium salt, a non-aqueous organic solvent, and an additive is provided. The additive may be an optionally substituted thiophene.

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: An electrolyte for a lithium secondary battery and a lithium secondary battery including the electrolyte are provided. The electrolyte includes a compound represented by Formula 1 below; a nonaqueous organic solvent; and a lithium salt: wherein, in Formula 1, R1, R2, R3, and R4 are each independently a unsubstituted or substituted C1-C20 alkoxy group, a unsubstituted or substituted C1-C20 alkoxyalkyleneoxy group, a unsubstituted or substituted C6-C20 aryloxy group, or R—O—C(?O)— where R is a C1-C20 alkyl group, a C6-C20 aryl group, or a C1-C20 fluoroalkyl group.