Korea Research Institute of Chemical Technology

Joung In Lee

Yongku Kang

Changjin Lee

Jun Kyoung Lee

The present invention relates to a phosphate-based acrylate crosslinking agent for polymer electrolyte and a polymer electrolyte composition comprising the phosphate-based acrylate crosslinking agent, and in particular to a phosphate-based acrylate crosslinking agent where a phosphate-based compound is introduced with a polyalkylene oxide group and an acrylate group and a polymer electrolyte composition comprising the phosphate-based acrylate crosslinking agent. The polymer electrolyte composition can be applied to electrolyte thin film and polymer electrolyte of small and large capacity lithium-polymer secondary battery due to its superior ionic conductivity and electrochemical and thermal stability, where the physical properties of electrolyte composition may be controlled by means of the length of polyalkylene oxide of the crosslinking agent.

Phosphate-based acrylate crosslinking agent for polymer electrolyte and a composition containing the same

The present invention relates to a cyclic siloxane-based compound and a solid polymer electrolyte composition containing the same as a crosslinking agent. The cyclic siloxane-based compound having a novel structure in which polyalkylene oxide acrylate groups are introduced into a cyclic siloxane compound and a solid polymer electrolyte composition containing the cyclic siloxane-based compound as a crosslinking agent along with other electrolyte components such as a plasticizer, lithium salt and a curing initiator. Since the solid polymer electrolyte composition of the present invention improves ion conductivity and electrochemical stability at room temperature, it can be useful as polymer electrolyte for electrolyte films, small-sized to high-capacity lithium-polymer secondary batteries, etc. Also, physical properties of the polymer electrolyte can be controlled easily by controlling the length of the polyalkylene oxide group in the cyclic siloxane-based crosslinking agent.

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Chungcheongnam-do, South Korea

Joung In Lee