Abstract: A negative electrode for a lithium-ion secondary cell, the negative electrode including a layered body of a collector and a negative electrode active material layer containing an alloy-based material (A) containing silicon or tin as a constituent element, a carbon coating (C) that covers the surface of the alloy-based material (A), carbon particles (B), and a binder (D), wherein the negative electrode for a lithium-ion secondary cell is characterized in that the total pore volume and average pore diameter of the carbon particles (B), as measured by nitrogen gas adsorption, satisfy the ranges of 1.0×10?2 to 1.0×10?1 cm3/g and 20 to 50 nm, respectively. The negative electrode for a lithium-ion secondary cell, and a lithium-ion secondary cell in which such a negative electrode for a lithium-ion secondary cell is used, have a high capacity and excellent cycle characteristics.

Abstract: The present invention addresses the problem of providing: a negative electrode that is for a lithium ion secondary battery, that has high initial charge/discharge efficiency, and that has high energy density; a lithium ion secondary battery comprising the negative electrode for a lithium ion secondary battery; and a method for producing the negative electrode for a lithium ion battery that makes it possible to efficiently pre-dope an alkali earth metal or an alkali metal such as lithium. In order to solve this problem, this negative electrode for a lithium ion secondary battery comprises a negative electrode mixture layer containing at least: an alloy material (A) comprising tin or silicon capable of occluding lithium; carbon particles (B); an imide bond-containing polymer (C); and a polycyclic aromatic compound (D). The amount of the imide bond-containing polymer (C) within the negative electrode mixture layer is 3-13 mass %.

Abstract: The objective of the present invention is to provide a mixture paste that is for the production of a negative electrode for a lithium ion secondary battery, that is not prone to cycle deterioration as a result of changes in volume, and that is not prone to decreases in initial charge/discharge efficiency as a result of reduction of a polyimide during charging. This objective is achieved by a mixture paste for a negative electrode of a lithium ion secondary battery comprising: a binder resin composition that comprises a polyamic acid and/or a corresponding polyimide, said polyamic acid being obtained from a diamine compound and a tetracarboxylic acid dianhydride, and said diamine compound comprising a diamine represented by formula (I) or (II); and a negative electrode active substance containing a silicon oxide represented by SiOx (0.5?x?1.5) and carbon particles.

Abstract: A negative electrode for a lithium-ion secondary cell, the negative electrode including a layered body of a collector and a negative electrode active material layer containing an alloy-based material (A) containing silicon or tin as a constituent element, a carbon coating (C) that covers the surface of the alloy-based material (A), carbon particles (B), and a binder (D), wherein the negative electrode for a lithium-ion secondary cell is characterized in that the total pore volume and average pore diameter of the carbon particles (B), as measured by nitrogen gas adsorption, satisfy the ranges of 1.0×10?2 to 1.0×10?1 cm3/g and 20 to 50 nm, respectively. The negative electrode for a lithium-ion secondary cell, and a lithium-ion secondary cell in which such a negative electrode for a lithium-ion secondary cell is used, have a high capacity and excellent cycle characteristics.