Abstract: A silicon-based anode comprising silicon, a carbon coating that coats the surface of the silicon, a polyvinyl acid that binds to at least a portion of the silicon, and vinylene carbonate that seals the interface between the silicon and the polyvinyl acid. Because of its properties, polyvinyl acid binders offer improved anode stability, tunable properties, and many other attractive attributes for silicon-based anodes, which enable the anode to withstand silicon cycles of expansion and contraction during charging and discharging.

Abstract: Provided is a cathode for molten carbonate fuel cells, including a porous nickel-based electrode containing nickel particles, and metal particles coated on the electrode, wherein at least a part of the metal particles are attached to the surface of the nickel particles. A method for preparing the same is also provided. The cathode for molten carbonate fuel cells accelerates the cathodic oxygen reduction and reduces polarization resistance occurring at the cathode, thereby providing a fuel cell with improved performance even at low temperature. Additionally, it is possible to improve the service life of a molten carbonate fuel cell due to such low operation temperature.

Abstract: A binder material, inorganic polymer, is used to formulate carbon nanotube pastes. This material can be cured at 200° C. and has a thermal-stability up to 500° C. Low-out gassing of this binder material makes it a good candidate for long life field emission devices. Due to better adhesion with this binder material, a strong adhesive peelable polymer from liquid form can be applied on the CNT cathode to achieve a uniform activation with even contact and pressure on the surface. The peelable polymer films may be used both as an activation layer and a mask layer to fabricate high-resolution patterned carbon nanotube cathodes for field emission devices using lithographic processes.

Abstract: Disclosed is anode for use in a lithium ion secondary battery. The anode includes an anode current collector and an anode active material arranged thereon, in which the anode active material contains amorphous carbon and at least one metal dispersed in the amorphous carbon, and the at least one metal is selected from: 30 to 70 atomic percent of Si; and 1 to 40 atomic percent of Sn. The anode gives a lithium ion secondary battery that has a high charge/discharge capacity and is resistant to deterioration of its anode active material even after repetitive charge/discharge cycles.

Abstract: An electrode in which a silicon layer is provided over a current collector, a thin film layer having a thickness within a certain range is provided on a surface of the silicon layer, and the thin film layer contains fluorine, is used for a power storage device. The thickness of the thin film layer containing fluorine is greater than 0 nm and less than or equal to 10 nm, preferably greater than or equal to 4 nm and less than or equal to 9 nm. The fluorine concentration of the thin film layer containing fluorine is preferably as high as possible, and the nitrogen concentration, the oxygen concentration, and the hydrogen concentration thereof are preferably as low as possible.

Abstract: A method for making a solid state cathode comprises the following steps: forming an alkali free first solution comprising at least one transition metal and at least two ligands; spraying this solution onto a substrate that is heated to about 100 to 400° C. to form a first solid film containing the transition metal(s) on the substrate; forming a second solution comprising at least one alkali metal, at least one transition metal, and at least two ligands; spraying the second solution onto the first solid film on the substrate that is heated to about 100 to 400° C. to form a second solid film containing the alkali metal and at least one transition metal; and, heating to about 300 to 1000° C. in a selected atmosphere to react the first and second films to form a homogeneous cathode film. The cathode may be incorporated into a lithium or sodium ion battery.

Abstract: A chemical vapor deposition (CVD) method using a vapor phase catalyst of directly growing aligned carbon nanotubes on a metal surfaces. The method allows for fabrication of carbon nanotube containing structures that exhibit a robust carbon nanotube metal junction without a pre-growth application of solid catalytic materials to the metal surface or the use of solder or adhesives in a multi-step fabrication process.

Abstract: A non-aqueous electrolyte secondary battery comprising electrodes including a positive electrode and a negative electrode, a separator positioned between the electrodes, and a non-aqueous electrolyte, wherein the electrodes have a collector carrying an active substance material, and the collector of at least one of the positive electrode and the negative electrode is a three-dimensional structure formed of a resin fiber covered with a metal film.

Abstract: An atomic layer deposition method for forming a barrier layer over a thermoelectric device comprises providing a thermoelectric device in a reactor, introducing a pulse of a first precursor into the reactor, introducing a pulse of a second precursor into the reactor, introducing an inert gas into the reactor after introducing the first precursor and after introducing the second precursor, wherein the acts of introducing the first precursor and introducing the second precursor are repeated to form a barrier layer over exposed surfaces of the thermoelectric device.

Abstract: Disclosed is a method for manufacturing a separator. The method includes (S1) preparing a porous planar substrate having a plurality of pores, (S2) preparing a slurry containing inorganic particles dispersed therein and a polymer solution including a first binder polymer and a second binder polymer in a solvent, and coating the slurry on at least one surface of the porous substrate, (S3) spraying a non-solvent incapable of dissolving the second binder polymer on the slurry, and (S4) simultaneously removing the solvent and the non-solvent by drying. According to the method, a separator with good bindability to electrodes can be manufactured in an easy manner. In addition, problems associated with the separation of inorganic particles in the course of manufacturing an electrochemical device can be avoided.

Abstract: A thermal management apparatus includes an electrohydrodynamic fluid accelerator in which an emitter electrode and another electrode are energizable to motivate fluid flow. One of the electrodes includes a solid solution formed of a solvent metal having a first performance characteristic and a solute material having a second performance characteristic. The first and second performance characteristics are exhibited substantially independently in the electrode as the solvent metal and solute material remain substantially pure within the solid solution. A method of making an EHD product includes providing an electrode with such a solid solution and positioning the electrode relative to another electrode to motivate fluid flow when energized.

Abstract: A negative electrode for a lithium ion battery 10 includes a negative electrode current collector 11, a negative electrode active material layer 14, and a lithium silicate layer 15. The negative electrode active material layer 14 contains silicon. The lithium silicate layer 15 contains lithium, oxygen, and silicon forming a Li—O—Si bond, and is formed at the interface between the negative electrode current collector 11 and the negative electrode active material layer 14. The negative electrode active material layer 14 and the lithium silicate layer 15 may be composed of columnar bodies.

Abstract: A method of making nanowire probes is provided. The method includes providing a template having a nanoporous structure, providing a probe tip that is disposed on top of the template, and growing nanowires on the probe tip, where the nanowires are grown from the probe tip along the nanopores, and the nanowires conform to the shape of the nanopores.

Abstract: Disclosed herein is a method for producing display devices for forming deposited patterns conforming to pixels on a substrate by means of elongated evaporation sources and a deposition mask having regularly arranged apertures, the method including the steps of arranging the deposition mask and the substrate in such a way that the long sides of the apertures and pixels are parallel to the lengthwise direction of the evaporation sources irrespective of the direction in which the display panel regions are arranged within the substrate; and moving the substrate and the deposition mask relative to the evaporation sources, thereby forming the deposited patterns conforming to the pixels on the substrate.

Abstract: The present invention aims to provide a technology, which uses an apparatus having a simple configuration to efficiently form a film with uniform film thickness and film quality when continuously forming a film by vacuum deposition of highly reactive lithium. A vacuum deposition system of the present invention has a vacuum deposition chamber wherein an evaporation material is deposited on a substrate by deposition, a substrate supplying/replacing system, connected to the vacuum deposition chamber, for performing supplying and replacing the substrate to and from the vacuum deposition chamber, and a material supplying/replacing system, connected to the vacuum deposition chamber, for performing the supplying and the replacing of the evaporation material to and from the vacuum deposition chamber.

Abstract: Electrodes for lithium batteries are coated via an atomic layer deposition process. The coatings can be applied to the assembled electrodes, or in some cases to particles of electrode material prior to assembling the particles into an electrode. The coatings can be as thin as 2 ?ngstroms thick. The coating provides for a stable electrode. Batteries containing the electrodes tend to exhibit high cycling capacities.

Abstract: An embodiment of the present application aims at providing a material which repeatedly undergoes a conversion reaction and an alloying reaction to have an improved coulombic efficiency in a first cycle of the repeating, and thereby allowing the material to serve as a high-electrical capacity negative electrode of a lithium secondary battery. In order to attain the object, a negative-electrode material is made by mixed dispersion of (i) nanoparticles of an electrical conducting material having electronic conduction and (ii) nanoparticles of an electrode active material which is reducible to a simple substance which undergoes an alloying reaction with lithium. The electrical conducting material is a sulfide having electronic conduction, and the electrode active material is a sulfide of an element which undergoes the alloying reaction with lithium. Further, the element which undergoes the alloying reaction with lithium is silicon.

Abstract: A method of forming a ruthenium-containing film in a vapor deposition process, including depositing ruthenium with an assistive metal species that increases the rate and extent of ruthenium deposition in relation to deposition of ruthenium in the absence of such assistive metal species. An illustrative precursor composition useful for carrying out such method includes a ruthenium precursor and a strontium precursor in a solvent medium, wherein one of the ruthenium and strontium precursors includes a pendant functionality that coordinates with the central metal atom of the other precursor, so that ruthenium and strontium co-deposit with one another. The method permits incubation time for ruthenium deposition on non- metallic substrates to be very short, thereby accommodating very rapid film formation in processes such as atomic layer deposition.

Abstract: To accelerate a film formation rate in forming a negative electrode active material film by vapor deposition using an evaporation source containing Si as a principal component, and to provide an electrode for lithium batteries which is superior in productivity, and keeps the charge and discharge capacity at high level are contemplated. The method of manufacturing an electrode for lithium batteries of the present invention includes the steps of: providing an evaporation source containing Si and Fe to give a molar ratio of Fe/(Si+Fe) being no less than 0.0005 and no greater than 0.15; and vapor deposition by melting the evaporation source and permitting evaporation to allow for vapor deposition on a collector directly or through an underlying layer. The electrode for lithium batteries of the present invention includes a collector, and a negative electrode active material film which includes SiFeyOx (wherein, 0<x<2, and 0.0001?y/(1+y)?0.

Abstract: The present invention relates to a multilayer oxygen-consuming electrode having a side facing the oxygen-containing gas and a side facing the alkaline electrolyte, wherein the electrode includes at least one support, and at least two layers comprising a catalyst and a hydrophobic material, wherein the outermost layer facing the gas side has a lower proportion of catalyst than the outermost layer facing the electrolyte side and wherein the proportion of hydrophobic material is not more than 8% by weight based on the total amount of the catalyst and the hydrophobic material.

Abstract: Improved battery materials, and a process for producing such improved battery materials are disclosed. The materials and methods employ battery components based on porous lightweight non woven substrate materials that are coated with dispersions comprised of carbon nanotubes, conductive secondary particles (usually with an approximate diameter between about 0.5 nm to 100 microns), a binder and a solvent. The dispersions permeate the substrate's pores, and when cured, the carbon nanotubes form conductive bridges between the conductive secondary particles, and these in turn are held on the substrate by the binder. The net effect is to increase the battery's total active material and energy density. The permeated substrate may then be further treated to achieve the desired conductivity as needed. These materials and methods can produce improved lead acid and silver zinc batteries, as well as other types of batteries.

Abstract: [PROBLEM] The purpose of the present invention is to provide a reference electrode which is easy to manufacture and handle, its manufacturing method, and an electrochemical cell using this. [METHOD FOR SOLVING THE PROBLEM] The reference electrode 10 comprises a core material 11 extending parallel to the anode 14 or the cathode 16 from a terminal, a lithium membrane 12 coating from a tip of the core material 11 to a field with predetermined length, and an insulator 13 partially coating a field uncoated with the lithium membrane 12 on the core material 11. The material consisting of at least a surface of the core material 11 is a conductive material which is substantially unresponsive to lithium or lithium alloy. The maximum width in a cross section of the core material 11 is preferably in the range of not less than 5 micrometers but not more than 50 micrometers, and thickness of the lithium membrane is preferably in the range of not less than 0.1 micrometers but not more than 20 micrometers.

Abstract: The present invention relates to a positive electrode composite material for Li-ion battery, to the preparation method thereof, and to the use thereof in a Li-ion battery. The composite material according to the invention includes: a) at least one conductive additive including carbon nanotubes at a content between 1 and 2.5 wt %, preferably between 1.5 and 2.2 wt %, relative to the total weight of the composite material; b) an active electrode material capable of reversibly forming an insertion compound with lithium, having an electrochemical potential greater than 2V relative to the Li/Li+ couple, and selected from among compounds having LiMv(XOz)n polyanionic framework; and c) a polymer binder. The positive electrode composite material according to the invention imparts, to the Li-ion battery incorporating said electrode, high support for the cycling capacity, weak internal resistance, and strong charge and discharge kinetics for the moderate cost of the stored KW.

Abstract: A negative electrode material comprising an active material and 1-20 wt % of a polyimide resin binder is suitable for use in non-aqueous electrolyte secondary batteries. The active material comprises silicon oxide particles and 1-50 wt % of silicon particles. The negative electrode exhibits improved cycle performance while maintaining the high battery capacity and low volume expansion of silicon oxide. The non-aqueous electrolyte secondary battery has a high initial efficiency and maintains improved performance and efficiency over repeated charge/discharge cycles by virtue of mitigated volumetric changes during charge/discharge cycles.

Abstract: A method for making a field emission cathode includes the steps of: (a) providing a substrate having a first substrate surface and a second substrate surface opposite to the first substrate surface; (b) forming a conductive film on the first substrate surface; (c) forming a light absorption layer on the conductive film; (d) forming a catalyst film on the light absorption layer; (e) flowing a mixture of a carrier gas and a carbon source gas over the catalyst film; (f) focusing a laser beam on the catalyst film and/or on the second substrate surface to locally heat the catalyst to a predetermined reaction temperature; and (g) growing an array of the carbon nanotubes via the catalyst film to form a field emission cathode.

Abstract: An electrode for electrochemical analysis is described, the electrode comprising: an insulating surface; a three-dimensional network of carbon nanotubes situated on the insulating surface; and an electrically conducting material in electrical contact with the carbon nanotubes; wherein the carbon nanotubes are oriented substantially parallel to the insulating surface. Also described is a method of manufacturing the electrode, and a method of electrochemically analysing a solution using electrodes of this type, and an associated assay device or kit.

Abstract: There are provided a device for fabricating an electrode by a roll-to-roll process and a method for fabricating an electrode. The device for fabricating an electrode includes an unwinding roll and a winding roll travelling an electrode material; a film forming roll disposed between the unwinding roll and the winding roll allowing the electrode material to travel along a cylindrical surface of the film forming roll and having a cooling unit cooling the electrode material; and an evaporation unit receiving a lithium source and mounted for the received lithium source to form a thin film in the electrode material positioned on the film forming roll. Thereby, the lithium is deposited in a vacuum atmosphere such that the process is simple and the deposition rate and the deposition uniformity of lithium can be improved.

Abstract: The invention is directed to a mountable electrode, methods for preparing said mountable electrode, a method for monitoring the corrosion protective properties of a coating on a metal substrate, a method for measuring the corrosion rate of an uncoated metal substrate, an apparatus for measuring electrochemical impedance spectroscopy of coated metal substrates, and the use of said mountable electrode. The mountable electrode of the invention comprises -a carrier comprising a water-soluble layer, wherein said water-soluble layer comprises a water-soluble polymer; and -a water-permeable pattern of an inert metal on said water-soluble layer.

Abstract: A negative electrode active material including mesoporous silica having mesopores filled with a metal and a lithium battery including the same.

Abstract: Provided is an electroconductive laminate having a substrate and an electroconductive film formed on the substrate, wherein the electroconductive film has a multilayer structure having an oxide layer and a metal layer alternately laminated from the substrate side in a total layer number of (2n+1) (wherein n is an integer of at least 1); the oxide layer predominantly contains zinc oxide and titanium oxide having a refractive index of at least 2.3; the oxide layer has an atomic ratio of titanium to a total amount of titanium and zinc of 15-50 atomic %; and the metal layer predominantly contains silver or a silver alloy. Also provided is a process for producing the electroconductive laminate.

Abstract: The present invention is a method for manufacturing a negative electrode material for a secondary battery with a non-aqueous electrolyte comprising at least: coating a surface of powder with carbon at a coating amount of 1 to 40 mass % with respect to an amount of the powder by heat CVD treatment under an organic gas and/or vapor atmosphere at a temperature between 800° C. and 1300° C., the powder being composed of at least one of silicon oxide represented by a general formula of SiOx (x=0.5 to 1.6) and a silicon-silicon oxide composite having a structure that silicon particles having a size of 50 nm or less are dispersed to silicon oxide in an atomic order and/or a crystallite state, the silicon-silicon oxide composite having a Si/O molar ratio of 1/0.5 to 1/1.6; blending lithium hydride and/or lithium aluminum hydride with the powder coated with carbon; and thereafter heating the powder coated with carbon at a temperature between 200° C. and 800° C. to be doped with lithium at a doping amount of 0.

Abstract: The present invention is a negative electrode material for a secondary battery with a non-aqueous electrolyte comprising at least a silicon-silicon oxide composite and a carbon coating formed on a surface of the silicon-silicon oxide composite, wherein at least the silicon-silicon oxide composite is doped with lithium, and a ratio I(SiC)/I(Si) of a peak intensity I(SiC) attributable to SiC of 2?=35.8±0.2° to a peak intensity I(Si) attributable to Si of 2?=28.4±0.2° satisfies a relation of I(SiC)/I(Si)?0.03, when x-ray diffraction using Cu—K? ray. As a result, there is provided a negative electrode material for a secondary battery with a non-aqueous electrolyte that is superior in first efficiency and cycle durability to a conventional negative electrode material.

Abstract: Provided are various examples of lithium electrode subassemblies, lithium ion cells using such subassemblies, and methods of fabricating such subassemblies. Methods generally include receiving nanostructures containing electrochemically active materials and interconnecting at least a portion of these nanostructures. Interconnecting may involve depositing one or more interconnecting materials, such as amorphous silicon and/or metal containing materials. Interconnecting may additionally or alternatively involve treating a layer containing the nanostructures using various techniques, such as compressing the layer, heating the layer, and/or passing an electrical current through the layer. These methods may be used to interconnect nanostructures containing one or more high capacity materials, such as silicon, germanium, and tin, and having various shapes or forms, such as nanowires, nanoparticles, and nano-flakes.

Abstract: A fabricating method of an electron-emitting device includes at least the following steps. A substrate having a first side and a second side is provided. The first side is opposite to the second side. A first electrode pattern layer is formed on the first side of the substrate. A conductive pattern layer is formed on the substrate and the first electrode pattern layer, and the conductive pattern layer partially covers the first electrode pattern layer. An electron-emitting region is formed in the conductive pattern layer. A second electrode pattern layer is formed on the second side of the substrate. The second electrode pattern layer partially covers the conductive pattern layer. The fabricating method has a simple fabricating process and a low fabricating cost.

Abstract: An extension electrode with enhanced durability and etching rate for plasma bevel etchers. The extension electrode comprises a plasma exposed truncated conical surface on an annular aluminum body. The aluminum body can roughened prior to anodization and coated with a ceramic material such as yttria.

Abstract: A negative electrode for a rechargeable lithium battery includes at least one layered unit including a Sn-based metal plating layer and a carbon layer on the metal plating layer. Rechargeable lithium batteries including the negative electrode exhibit improved charge and discharge capacities, and have good capacity retention characteristics even after repeated charge and discharge.

Abstract: A negative-electrode active material for nonaqueous electrolyte secondary battery, comprising a silicon compound capable of inserting and extracting lithium ion, wherein the silicon compound contains silicon-hydrogen bonds and the silicon-hydrogen bonds are introduced into the compound by reduction of at least one compound selected from the group consisting of silicon oxide, silicon nitride and silicon carbide with hydrogen, and a negative electrode for nonaqueous electrolyte secondary battery having a layer containing the negative-electrode active material in the above arrangement formed on a current collector.

Abstract: Methods and devices arising from the practice thereof for making and using battery electrodes formed onto ion permeable, electrically non-conductive substrates, preferably battery separators are disclosed herein. Electrodes are formed onto substrates using a variety of methods including, but not limited to, spray coating and electrophoretic deposition. Electrically conductive layers may be applied to the electrode coating layer side opposite or adjacent to the substrate to act as current collectors for the battery. Multilayer devices having alternating layers of conductive layers, electrode layers and substrates, wherein the conductive layers may be in electrical communication with other conductive layers to form a battery.

Abstract: A method for manufacturing an electromechanical transducer film including a lower electrode and plural layers of a sol-gel solution film formed on the lower electrode by an inkjet method, the method including the steps of a) modifying a surface of the lower electrode, b) forming a first sol-gel solution film on the surface of the lower electrode by ejecting droplets of a sol-gel solution to the surface of the lower electrode, and c) forming a second sol-gel solution film on the first sol-gel solution film by ejecting droplets of the sol-gel solution to a surface of the first sol-gel solution film. Adjacent dots formed on the surface of the lower electrode by the droplets ejected in step b) overlap each other. Adjacent dots formed on the surface of the first sol-gel solution film by the droplets ejected in step c) do not overlap each other.

Abstract: A method for modifying a transparent electrode film contained in a transparent electrode film-attached substrate having a substrate and the transparent electrode film formed on the substrate includes annealing the transparent electrode film by applying flash light having an optical pulse duration time of 0.1 msec to 10 msec to the transparent electrode film using a flash lamp, thereby heating the transparent electrode film.

Abstract: An electrode composite and to its manufacturing process. The composite includes an active element, i.e. one exhibiting electrochemical activity, a conductive additive and a binder. The conductive additive is a mixture of conductive additives containing at least carbon nanofibres (CNFs) and at least carbon nanotubes (CNTs). Also, the negative electrodes for electrochemical devices of the lithium battery type including said composite and to the secondary (Li-ion) batteries provided with such a negative electrode.

Abstract: A negative electrode includes nanotubes including a metal/metalloid, disposed on a conductive substrate, and having opened ends. A lithium battery includes the negative electrode.

Abstract: Provided is a method for preparing an epoxy substrate having a nanopattern, including: (a) forming a titanium oxide film by anodizing a titanium substrate; (b) obtaining a titanium substrate having a concave shape formed on the surface by removing the titanium oxide film from the titanium substrate on which the titanium oxide film has been formed; (c) coating an epoxy resin onto the titanium substrate on which the concave shape has been formed; and (d) obtaining an epoxy substrate having a nanopattern of convex surfaces by removing the titanium substrate. According to the presently disclosed method, an epoxy substrate having a nanopattern of convex surfaces is prepared by anodizing a titanium substrate, coating an epoxy resin onto a nanopattern formed with a concave shape on the surface of the titanium substrate, and removing the titanium substrate.

Abstract: A lithium-sulfur cell comprising an anode structure, a cathode structure and an electrolyte section abutting to the cathode structure. The cathode structure comprises a continuous layer of nanotubes or nanowires and sulfur particles. The sulfur particles are attached to the nanotubes or nanowires. The continuous layer of nanotubes or nanowires abuts to at least a part of the electrolyte section. The invention further relates to a corresponding method for manufacturing the inventive cell.

Abstract: The invention provides, in preferred embodiments, methods, systems, and devices arising therefrom for making battery electrodes, in particular, for lithium-ion batteries. Unlike conventional slurry coating methods that use mechanical means to coat thick pastes of active material, other materials, and solvent(s) onto a substrate, the invention provides for a method to produce electrode coatings onto support in a multi-layer approach to provide highly uniform distribution of materials within the electrode. Problems of differential sedimentation of particles in slurries found in conventional methods are minimized with the methods of the present invention. Also included are systems for producing in large-scale the battery electrodes of the invention. Further included are electrodes produced by the methods and systems described herein.

Abstract: A method for producing a silicon oxide including the steps of supplying silicon atoms onto a substrate through an oxygen atmosphere to form a silicon oxide layer on the substrate, and separating the silicon oxide layer from the substrate and pulverizing the separated silicon oxide layer to obtain silicon oxide containing silicon and oxygen in predetermined proportions, and a negative electrode active material obtained by the production method.

Abstract: This invention relates a method for manufacturing cathode assemblies for field emission devices.

Abstract: This invention relates a method for manufacturing cathode assemblies for field emission devices.

Abstract: A biosensor is disclosed comprising a support; a conductive layer composed of an electrical conductive material such as a noble metal, for example gold or palladium, and carbon; slits parallel to and perpendicular to the side of the support; working, counter, and detecting electrodes; a spacer which covers the working, counter, and detecting electrodes on the support; a rectangular cutout in the spacer forming a specimen supply path; an inlet to the specimen supply path; a reagent layer formed by applying a reagent containing an enzyme to the working, counter, and detecting electrodes, which are exposed through the cutout in the spacer; and a cover over the spacer. The biosensor can be formed by a simple method, and provides a uniform reagent layer on the electrodes regardless of the reagent composition.

Abstract: The invention provides a positive electrode for a nonaqueous electrolyte secondary battery which is capable of alleviating generation of gas during charge/discharge with a nonaqueous electrolyte solution penetrated therein, and a method for fabricating the same. The positive electrode for the nonaqueous electrolyte secondary battery includes a current collector, and a positive electrode material mixture layer 22 formed on the current collector. The method includes reacting acidic gas or an acidic solution with the positive electrode which has been pressed by rolling, thereby providing a positive electrode for a nonaqueous electrolyte secondary battery including a positive electrode active material 23 which is capable of reversibly inserting and extracting lithium ions as the positive electrode material mixture layer, and in which lithium salt 24a, 25a except for lithium hydroxide and lithium carbonate is present at least on fracture surfaces 24, 25 of the positive electrode active material 23.