Provided is an all-solid-state battery which is configured to suppress an increase in the resistance of the all-solid-state battery and which is configured to suppress the peeling-off of the solid electrolyte layer. Disclosed is an all-solid-state battery comprising: a cathode comprising a cathode layer, an anode comprising an anode layer, and a solid electrolyte layer disposed between the cathode layer and the anode layer, wherein a width of the cathode layer is smaller than a width of the anode layer and a width of the solid electrolyte layer; wherein the solid electrolyte layer comprises a non-facing portion where the solid electrolyte layer does not face the cathode layer and a facing portion where the solid electrolyte layer faces the cathode layer; and wherein a binder content of the non-facing portion is larger than a binder content of the facing portion.

A positive electrode for an electrochemical cell of a secondary lithium metal battery may include an aluminum metal substrate and a protective layer disposed on a major surface of the aluminum metal substrate. The protective layer may include a conformal aluminum fluoride coating layer. A positive electrode active material layer may overlie the protective layer on the major surface of the aluminum metal substrate. The positive electrode active material layer may include a plurality of interconnected pores, which may be infiltrated with a nonaqueous electrolyte that includes a lithium imide salt.

The present invention provides: an electrode mixture manufacturing method comprising the processes of introducing a first binder, an electrode active material, and a conductive material into an extruder, performing a first mixing of the first binder, the electrode active material, and the conductive material in the extruder, additionally introducing a second binder into the extruder and performing a second mixing, and yielding an electrode mixture resulting from the first mixing and the second mixing; an electrode mixture manufactured thereby; and an electrode manufacturing method using the electrode mixture.

Provided herein are solvents for an electrolyte of a battery comprising fluorinated compounds of the present disclosure, batteries comprising: an anode structure including an anode current collector; a cathode structure including a cathode current collector and a cathode material disposed on the cathode current collector; and the electrolyte of the disclosure. Also provided herein are layers of a battery, comprising a fluorinated polymer compounds of the present disclosure.

An interlayer material for a lithium-sulfur battery, and a lithium-sulfur battery, the interlayer material including electrically conductive MOF modified carbon fiber paper material between the separator and cathode accelerating electron transfer and having catalytic and barrier effect on lithium polysulfides. The paper material is prepared by: pretreatment of the paper by subjecting the carbon fiber paper to hydrophilic treatment; preparation of carbon fiber paper grown with Co.sub.3(HITP).sub.2 including: complexing Co.sup.2+ and hexaiminotriphenylene on the paper surface, and allowing the product to grow in situ; and removal of structural impurities. The carbon fiber paper provides an electrically conductive substrate ensuring high-speed electrode movement between the cathode and separator; and Co.sub.3(HITP).sub.2 grown on the carbon fiber paper provides sufficient polarity for the adsorption of lithium polysulfides, alleviating the shortcomings of the carbon material, and promotes a lithium polysulfides reaction through the catalysis of Co—N.sub.4, inhibiting the shuttle effect of the polysulfides.

A negative electrode for nonaqueous electrolyte secondary batteries is provided with: a negative electrode current collector; a first negative electrode mix layer arranged on a surface of the negative electrode current collector; and a second negative electrode mix layer arranged on a surface of the first negative electrode mix layer. The first negative electrode mix layer contains a first carbon material having a true density of 2.1 g/cm.sup.3 to 2.3 g/cm.sup.3, the second negative electrode mix layer contains a second carbon material having a true density of 1.5 g/cm.sup.3 to 2.0 g/cm.sup.3, the inter-particle porosity of the second carbon material in the second negative electrode mix layer is larger than that of the first carbon material in the first negative electrode mix layer, and the ratio of the mass of the first negative electrode mix layer to that of the second negative electrode mix layer is 95:5 to 80:20.

A composite negative electrode material includes a Si-M-C composite material and graphene on a surface of the Si-M-C composite material, where M includes at least one of boron, nitrogen, or oxygen. Solid state nuclear magnetic resonance testing of the Si-M-C composite material shows that chemical shifts of element silicon include −5 ppm±5 ppm, −35 ppm±5 ppm, −75 ppm±5 ppm, and −110 ppm±5 ppm, and a peak width at half height at −5 ppm±5 ppm satisfies 7 ppm<K<28 ppm. The composite negative electrode material and the negative electrode plate and electrochemical apparatus that use the composite negative electrode material have good cycling performance.

An electrode assembly includes a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate. The first electrode plate includes a first active material layer and a second active material layer provided along the length of the electrode plate. A lithium ion diffusion rate of the first active material layer is greater than a lithium ion diffusion rate of the second active material layer.

Porous carbon particles, and a positive electrode active material and a lithium secondary battery including the same. This may improve the energy density of the lithium secondary battery by applying a porous electrode containing micropores and mesopores and having a uniform size distribution and shape as a positive electrode material.

Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive electrode includes a current collector and a positive electrode layer on the current collector, the positive electrode layer including a nickel-based positive active material of Chemical Formula 1 having a BET specific surface area of about 0.5 m.sup.2/g to about 2.5 m.sup.2/g, a metal fluoride, a conductive material, and a binder, wherein an amount of the metal fluoride is about 1 wt % to about 10 wt % based on 100 wt % of the positive electrode layer. In Chemical Formula 1, 0.9≤a≤1.1, 0.8≤x≤0.98, 0.01≤y≤0.01≤z≤0.1, x+y+z=1, and A is Mn or Al.
Li.sub.aNi.sub.xCo.sub.yA.sub.zO.sub.2  Chemical Formula 1