ELECTRODE PROTECTIVE FILM FORMING AGENT, ELECTRODE, ELECTROLYTE, LITHIUM SECONDARY BATTERY, LITHIUM-ION CAPACITOR, AND METHOD FOR PRODUCING ELECTRODE PROTECTIVE FILM

摘要

The purpose of the present invention is to provide: a lithium secondary battery having excellent output characteristics, long-term cycle characteristics, and low electrode resistance; an electrode for a lithium-ion capacitor; and an electrolyte. This electrode protective film forming agent (D) contains a compound (C) having: at least one bond (a) selected from a group comprising a urethane bond (a1), a urea bond (a2), an allophanate bond (a3) and a biuret bond (a4); a polymerizable unsaturated bond (b); and a group (g) represented by general formula (1). [M is a monovalent metal ion, and A represents -CO2 -,-SO3 -, -OPO(OR1)O-, -B(O-)2, -B(OR2)O- or -B(OR3)3 - (R1 to R3 are each a hydrocarbon group with a carbon number of 1 to 10; and there is a plurality of R3, each of which may be the same or different, and may combine with each other to form a ring.)]