금속에 고정될 수 있는 폴리비닐리덴 플루오라이드를 함유하는 바인더 및 관련 리튬-이온 배터리 전극

• Main Authors: BIZET STEPHANE, CHAUVEAU JEROME, RIVAS NADINE, BONNET ANTHONY
• Format: Patent
• Language: Korean
• Published: 17.07.2018
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CORRECTING FLUIDS; DYES; ELECTRICITY; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

본 발명은 리튬-이온 배터리에 사용될 수 있고, 적어도 하나의 비닐리덴 플루오라이드, 및 금속에 대한 친화도를 갖거나 금속에 고정되게 할 수 있는 작용기를 갖는 모노머를 포함하는 적어도 하나의 아크릴 코폴리머를 포함하는 바인더에 관한 것이다. 본 발명에 따르면, 특징적인 방식으로, 상기 폴리비닐리덴 플루오라이드는 5 중량%의 상기 비닐리덴 플루오라이드를 함유하는 N-메틸-2-피롤리돈의 용액이 23℃에서 30 rpm의 제시된 전단 속도로 측정된, 125 mPa.s 내지 1500 mPa.s의 점도를 갖는 것이다. The present invention relates to a binder which can be used in a lithium-ion battery, comprising at least one polyvinylidene fluoride and at least one acrylic copolymer including monomers having functional groups which have an affinity for metals or are capable of fixing to the metals. According to the invention, in a characteristic manner, said polyvinylidene fluoride is such that a solution of N-methyl-2-pyrrolidone containing 5 wt % of said polyvinylidene fluoride has a viscosity, measured at 23° C. with an imposed shear rate of 30 rpm, of 125 mPa·s to 1500 mPa·s.