A carbon-sulfur composite including a carbonized metal-organic framework (MOF); and a sulfur compound introduced to at least a part of an outside surface and an inside of the carbonized metal-organic framework, wherein the carbonized metal-organic framework has a specific surface area of 1000 m.sup.2/g to 4000 m.sup.2/g, and the carbonized metal-organic framework has a pore volume of 0.1 cc/g to 10 cc/g, and a method for preparing the same.

Provided is a secondary battery electrode having a sufficient peel strength between a base material and a material mixture layer without the need for increasing a binder addition amount. A secondary battery electrode includes a base material and a material mixture layer made of an electrode material mixture containing an active material and a binder. The material mixture layer has a multilayer structure of at least two or more layers stacked on the base material. In the multilayer structure of the material mixture layer, a first material mixture layer stacked on a surface of the base material has a higher contained binder concentration than those of other material mixture layers. The thickness of the first material mixture layer is preferably equal to or less than the total thickness of the other material mixture layers.

A monolithic ceramic electrochemical cell housing is provided. The housing includes two or more electrochemical sub cell housings. Each of the electrochemical sub cell housing includes an anode receptive space, a cathode receptive space, a separator between the anode receptive space and the cathode receptive space, and integrated electron conductive circuits. A first integrated electron conductive circuit is configured as an anode current collector within the anode receptive space. A second integrated electron conductive circuit is disposed as a cathode current collector within the cathode receptive space.

Process for making a cathode comprising the following steps (a) Providing a cathode active material selected from layered lithium transition metal oxides, lithiated spinels, lithium transition metal phosphate with olivine structure, and lithium nickel-cobalt aluminum oxides, (b) treating said cathode active material with an oligomer bearing units according to general formula (I a),

##STR00001## wherein R.sup.1 are the same or different and selected from hydrogen and C.sub.1-C.sub.4-alkyl, aryl, and C.sub.4-C.sub.7-cycloalkyl, R.sup.2 and R.sup.3 are selected independently at each occurrence from phenyl and C.sub.1-C.sub.8-alkyl, C.sub.4-C.sub.7-cycloalkyl, C.sub.1-C.sub.8-haloalkyl, OPR.sup.1(O)—*, and —(CR.sup.9.sub.2).sub.p—Si(R.sup.2).sub.2—* wherein one or more non-vicinal CR.sup.9.sub.2-groups may be replaced by oxygen, R.sup.9 is selected independently at each occurrence from H and C.sub.1-C.sub.4-alkyl, and p is a variable from zero to 6, and wherein the overall majority of R.sup.2 and R.sup.3 is selected from C.sub.1-C.sub.8-alkyl, and, optionally, at least one of carbon in electrically conductive form and, optionally, a binder, (c) applying a slurry of said treated cathode active material to a current collector, and (d) at least partially removing solvent used in step (c).

An electrode assembly includes a plurality of unit cells, each unit cell having a radial structure with reference to a center. A thickness of each unit cell is reduced while going to the center from an external side of the radial structure with respect to a horizontal cross-section. At least one electrode tab is formed on at least one of an upper edge, a lower edge, an external edge, or a center edge of a current collector included in the unit cell.

An insulation paste for a current collector for a lithium-ion secondary battery contains an inorganic filler (A), a binder (B), a dispersion resin (C), and a solvent (D), wherein the insulation paste has a viscosity (shear rate of 1 s.sup.−1) of 2000 mPa.Math.s or more, and has a TI value of greater than 1, and the TI value is a ratio of the viscosity at a shear rate of 1 s.sup.−1 to the viscosity at a shear rate of 1000 s.sup.−1.

A carbon-sulfur composite including a carbonized metal-organic framework (MOF); and a sulfur compound introduced to at least a part of an outside surface and an inside of the carbonized metal-organic framework, wherein the carbonized metal-organic framework has a specific surface area of 2500 m.sup.2/g to 4000 m.sup.2/g, and the carbonized metal-organic framework has a pore volume of 0.1 cc/g to 10 cc/g, and a method for preparing the same.

A nonaqueous electrolyte secondary battery positive electrode according to an aspect of the present disclosure is provided with a positive electrode collector and a positive electrode mixture layer that is formed on the surface of the positive electrode collector. The positive electrode mixture layer contains a positive electrode active material, fibrous carbon, and nonfibrous carbon. When the positive electrode mixture layer is divided into two equal regions in the thickness direction, and the half of the regions that is on the positive electrode collector side is defined as a first region and the half of the regions that is on the outer surface side is defined as a second region, the mass proportion of the fibrous carbon with respect to the total mass of the fibrous carbon and the nonfibrous carbon in the first region is set to be less than that in the second region.

A positive electrode for nonaqueous electrolyte secondary batteries according to the present invention is provided with a positive electrode collector and a positive electrode mixture layer that is formed on the surface of the positive electrode collector. The positive electrode mixture layer contains at least carbon fibers and a positive electrode active material that contains a lithium transition metal composite oxide; and the lithium transition metal composite oxide has a layered rock salt structure, while containing at least Ni, Al and Ca, but not substantially containing Co.

Disclosed are compositions, devices, systems and fabrication methods for stretchable composite materials and stretchable electronics devices. In some aspects, an elastic composite material for a stretchable electronics device includes a first material having a particular electrical, mechanical or optical property; and a multi-block copolymer configured to form a hyperelastic binder that creates contact between the first material and the multi-block copolymer, in which the elastic composite material is structured to stretch at least 500% in at least one direction of the material and to exhibit the particular electrical, mechanical or optical property imparted from the first material. In some aspects, the stretchable electronics device includes a stretchable battery, biofuel cell, sensor, supercapacitor or other device able to be mounted to skin, clothing or other surface of a user or object.