Samsung Sdi Co., Inc.

Hee-Sun Yun

Yong-Beom Lee

Kwang-Jo Cheong

Soo-Mi Eo

A rechargeable lithium battery includes a positive active material for intercalating and deintercalating lithium ions; a negative electrode including a negative active material for intercalating and deintercalating lithium ions; and a polymer electrolyte including a polymer, a non-aqueous organic solvent and a lithium salt. The rechargeable lithium battery has a battery capacity per unit area of the positive electrode from about 3.3 mAh/cmto about 2.8 mAh/cm. The polymer includes a first monomer represented by the following Chemical Formula 1 and a second monomer represented by at least one of the following Chemical Formulae 2 to 7 at a weight ratio of about 85:15 to about 50:50 of the first monomer to the second monomer. In the above Chemical Formulae 1 to 7, each compound is as described in the detailed description.

Rechargeable lithium battery

An electrolyte solution for a rechargeable lithium battery, including a lithium salt, a non-aqueous organic solvent, and an additive including fluoroethylene carbonate, a vinyl-containing carbonate, a substituted or unsubstituted C2 to C10 cyclic sulfate, and a nitrile-based compound represented by the following Chemical Formula 1: 

Electrolyte solution for rechargeable lithium battery, and rechargeable lithium battery including the same

A rechargeable battery having a plurality of electrode assemblies, a first current collecting plate disposed at one side of the plurality of electrode assemblies, a second current collecting plate disposed at an opposite side of the plurality of the electrode assemblies, the first and second current collecting plates being electrically connected with the electrode assemblies. Each one of the first and second current collecting plates having a plurality of current collecting portions fixed to and electrically connected to the electrode assemblies, a connection portion electrically connecting at least two of the current collecting portions, and an insulating supporter supporting the current collecting portions and the connection portion by surrounding the current collecting portions and the connection portion. The insulating supporter includes a plurality of openings exposing the plurality of current collecting portions.

Rechargeable battery

A rechargeable lithium battery includes a positive electrode including a positive active material being capable of intercalating or deintercalating lithium; a negative electrode including a carbon-based negative active material and a water-soluble binder; and a polymer electrolyte including a polymer, a non-aqueous organic solvent and a lithium salt, wherein the polymer comprises a polymerization product of a first monomer represented by Chemical Formula 1 with a second monomer which is one or more of monomers represented by Chemical Formulae 2 to 7:A-U&#x2014;B&#x2003;&#x2003;Chemical Formula 1CH&#x2550;CL1-C(&#x2550;O)&#x2014;O-M&#x2003;&#x2003;Chemical Formula 2CH&#x2550;CL1-O-M&#x2003;&#x2003;Chemical Formula 3CH&#x2550;CL1-O&#x2014;C(&#x2550;O)-M&#x2003;&#x2003;Chemical Formula 4CH&#x2550;CH&#x2014;CH&#x2014;O-M&#x2003;&#x2003;Chemical Formula 5CH&#x2550;CH&#x2014;S(&#x2550;O)-M&#x2003;&#x2003;Chemical Formula 6CH&#x2550;CL1-C(&#x2550;O)&#x2014;O&#x2014;CHCH&#x2014;NH&#x2014;C(&#x2550;O)&#x2014;O-M&#x2003;&#x2003;Chemical Formula 7

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Yongin-si, South Korea

Hee-Sun Yun