38results about "Electrode carriers/collectors" patented technology

An all-solid lithium secondary battery has excellent reliability including safety. However, in general, its energy density or output density is lower than that achieved by liquid electrolyte systems.

The all-solid lithium battery includes a lithium ion-conducting solid electrolyte as an electrolyte. The lithium ion-conducting solid electrolyte is mainly composed of a sulfide, and the surface of a positive electrode active material is coated with a lithium ion-conducting oxide. The advantages of the present invention are particularly significant when the positive electrode active material exhibits a potential of 3 V or more during operation of the all-solid lithium battery, i.e., when redox reaction occurs at a potential of 3 V or more.

A battery module, including a plurality of unit cells and a cell barrier interposed between the unit cells, is provided. The cell barrier includes a body member and a fixing part disposed on the edge of the body member and connected to an adjacent cell barrier while housing a unit cell.

Carbon-base bipolar electrode for electrochemical redox reactions in an acid electrolyte in the form of a fluid impervious and electrically conductive septum, at least a face of which consists, at least partially, of a fluid previous woven or unwoven electrodically active fabric of carbon fibers or of yarns of carbon fibers, has an electrically conductive fluid impervious septum consisting of a composite of a matrix fabric in the form of a tightly knit or woven fabric of carbon fibers or of yarns of carbon fibers the pores of which are hydraulically sealed by an electrically conductive carbon containing material at least partly filling the pores of said matrix fabric. The carbon containing electrically conductive material may be a glassy carbon formed in situ by thermal conversion of a precursor material with which said matrix fabric is pre-impregnated or a polymerized thermosetting resin loaded with carbon and/or graphite particles and/or fibers or a thermally reflown aggregate of a thermoplastic resin an carbon and/or graphite particles and/or fibers. The pervious fabric on the face of the electrode may be a raised pile of carbon fibers.

The disclosed embodiments provide a battery cell. The battery cell includes a cathode current collector containing graphene, a cathode active material, an electrolyte, an anode active material, and an anode current collector. The graphene may reduce the manufacturing cost and/or increase the energy density of the battery cell.

A non-aqueous electrolyte battery according to the present invention is a non-aqueous electrolyte battery including: a positive electrode including a positive collector and a positive active material containing layer formed on the positive collector; a negative electrode including a negative collector and a negative active material containing layer formed on the negative collector; and a separator provided between the positive electrode and the negative electrode. The positive electrode has a positive collector exposed portion at a part of the positive collector, on which the positive active material containing layer is not formed. An insulating resin film formed of a base substance of a heat resistant resin having a heat resistant temperature of 150° C. or more, the resin film containing a thermoplastic resin therein, is provided at a portion where the positive collector exposed portion and the negative active material containing layer are opposed to each other with the separator positioned therebetween.

A press apparatus for assembly of a battery pack includes a tooling table having an aperture formed therein. The tooling table includes a plurality of index pawls disposed adjacent the aperture. The index pawls militate against the components passing upwardly through the aperture after the components have passed downwardly through the aperture. A first press is disposed on a first side of the tooling table and configured to advance the components downwardly through the aperture and past the index pawls on the tooling table. A second press is disposed on a second side of the tooling table. The second press is configured to retract a distance that the components are pressed downwardly through the aperture and maintain a substantially constant upward force on the components. A third press is disposed on the first side of the tooling table and configured to compress the battery pack to a desired size and load.

A negative electrode current collector for a non-aqueous electrolyte secondary battery comprising copper or a copper alloy, characterized in that the copper or copper alloy has a ratio I200/I111 of an intensity I200 of a peak attributed to (200) plane to an intensity I111 of a peak attributed to (111) plane, which satisfies the equation (1): 0.3<=I200/I111<=4.0 (1) in an X-ray diffraction pattern measured using CuKalpha radiation as a radiation source.

A composite flow field element, such as a separator plate used in a high temperature air-cooled fuel cell assembly, preferably includes a metal sheet substrate of non-uniform thickness, such as a mesh, and flexible graphite layers bonded to the metal mesh substrate by an electrically conductive bonding agent.

A current collector for use in a fuel cell is described and wherein the fuel cell includes an ion exchange membrane having opposite anode and cathode sides, and a current collector is disposed in ohmic electrical contact with each of the anode and cathode sides, and wherein at least one of the current collectors has a surface area which provides substantially effective operational hydration for the ion exchange membrane.

An electrode comprises a conductor and an electrode coating, said electrode coating comprising as electronically active material a transition metal (T) oxidenitride of formula Li_xT^I_mT^II_nN_yO_z form of nanoparticles, wherein x=0-3, y+z=2-4, y>0, z>=0.25, m+n=1, m=0-1, n=0-1, T^I and T^II both being transition metals of the groups IVB, VB, VIB and VIIB, and periods 3d, 4d and 5d, in particular transition metals selected from Zr, Nb, Mo, Ti, V, Cr, W, Mn, Ni, Co, Fe and Cu. Dependent on the kind of transition metal, its oxidation state and the Li content, such materials may be used as anode materials or as cathode materials, respectively.

Provided is a process for producing a rope-shaped alkali metal battery, comprising: (a) providing a first electrode comprising a first conductive porous rod and a first mixture of a first electrode active material and a first electrolyte residing in the pores of the first porous rod; (b) wrapping or encasing a porous separator around the first electrode to form a separator-protected first electrode; (c) providing a second electrode comprising a second conductive porous rod and a second mixture of a second electrode active material and a second electrolyte residing in the pores of the second porous rod; (d) combining the separator-protected first electrode and second electrode to form a braid or a yarn having a twist or spiral electrode; and (e) wrapping or encasing a protective casing or sheath around the braid or yarn to form the rope battery.

The invention discloses a method for producing a lead acid battery pole plate corrosion layer through mounting, which belongs to the technical field of metallographic sample preparation. The method comprises the steps of preparation of a pole plate, preparation of a mounting die, preparation of an epoxy resin inlay material, primary mounting, sampling by wire cutting, and secondary mounting. The method fills the blank of the method for producing the lead acid battery pole plate corrosion layer through mounting, the operation is easy, structure of the pole plate corrosion layer can not be destroyed, the method is safe and reliable, and is especially suitable for positive and negative pole plates of the lead acid battery, and is used for producing lead acid battery pole plate corrosion layer through mounting.

The invention adopts a vapor phase method. Red phosphorus is heated in a low-temperature closed space to form phosphorus steam, and is subjected to in-situ chemical reaction with commercial porous nickel foam, and then a flake NiXP/Ni composite material is formed on the surface of a nickel foam substrate. X-ray diffraction characterization proves characteristic peaks comprising simple substances Ni, NiP2 and Ni5P4. According to the method, the NiXP/Ni (X is smaller than 1.25 and greater than 0.5) composite material employing the nickel foam as the substrate is obtained. Scanning electron microscope characterization proves that a flake structure of which the mean thickness is 20nm vertically grows on the porous mesh nickel foam substrate. Through the structure, the electric contact performance is strengthened, vertical spaces of which the mean size is 10 microns are formed among the flake structures, a sodium ion diffusion channel is formed by the shape and form and the sodium ion diffusion path is shortened. An electrochemical performance test proves that the first discharge capacity is 0.72mAh/cm<2> and the capacity retention after 60 cycles is kept at 0.28mAh/cm<2>.

The invention provides a lithium ion battery cathode, the cathode comprises a current collector and a cathode material layer positioned on the surface of the current collector, wherein the cathode material layer is a copper stibium alloy electroplated layer, the thickness of the copper stibium alloy electroplated layer is 5-40 mum, the weight content of copper in the copper stibium alloy is 35%-65%. The invention also provides a method for preparing the lithium ion battery cathode by depositing the copper stibium alloy on the current collector through an electroplating method. The invention also provides a battery which takes the cathode as the lithium ion battery cathode. The lithium ion battery cathode of the invention has the advantages of excellent conductive performance, cycle performance and heavy current charge and discharge performance, the plated layer and the current collector base material enable strong bonding force, the cathode material on the surface of the current collector possesses a stable structure. The electroplating method used by the invention is capable of accurately regulating and controlling the thickness and component of the copper stibium alloy electroplated layer on the current collector in certain extent, all the steps are carried out under normal temperature, the reaction time is short and the energy consumption is low.

The invention discloses a high-specific-energy flexible integrated electrode and a preparation method therefor. The electrode is prepared from the following components based on mass percentage: 20-80% of graphene, 0-10% of conductive carbon black, and 10-80% of sulfur-containing material, wherein the content of the conductive carbon black is not zero; the graphene and the conductive carbon black form a flexible graphene/conductive carbon black self-supporting thin film; and the sulfur-containing material is elementary sulfur or -S<m->-structured polysulfide, wherein m is greater than 2. By virtue of the high-specific-energy flexible integrated electrode prepared by the invention, the utilization rate of sulfur in the electrode is improved; in addition, the high-specific-energy flexible integrated electrode is high in conductivity and mechanical performance, capable of effectively relieving volume expansion of an active material in the charge-discharge process, and capable of improving the cycle performance and high specific energy characteristic of a battery.

The invention discloses a flexible lithium-ion battery capable of working around the clock and a preparation method thereof. According to the battery, a membrane assembled by a stretched carbon nanotube macroscopic tube continuous body is taken as a current collector for positive and negative electrodes; and the membrane is subjected to porous treatment and electrolyte infiltration treatment in the membrane-forming process and an electrolyte can be stored into a carbon nanotube membrane as the current collector, so that the obtained battery still can normally work in harsh environments, such as extremely high temperature, extremely low temperature, vacuum and water. A battery main body comprises a positive electrode plate, a membrane and a negative electrode plate which are sequentially stacked. The invention further provides a preparation method of the battery. According to the flexible lithium-ion battery, the problem of a failure of an existing lithium-ion battery due to the fact that the current collector cannot store the electrolyte in the harsh environments can be effectively solved; the preparation process is in full integration with a production technology of an existing mainstream lithium-ion battery; mass production under existing production conditions is facilitated; and the flexible lithium-ion battery has very high practicability.

Disclosed are copper foil or net comprising a Cu-nitrile compound complex formed on the surface thereof, a method for preparing the same, and a lithium secondary battery that comprises an electrode using the same copper foil or net as a collector. The lithium secondary battery, which uses a copper collector comprising a Cu-nitrile compound complex formed on the surface thereof through the application of a certain voltage level, can prevent the corrosion of Cu occurring at a voltage of 3.6V or higher under overdischarge conditions away from the normal drive condition, and thus can significantly improve the capacity restorability after overdischarge.

A fuel cell structure comprises a diffusion layer and/or a catalyst layer which are made of a carbonaceous porous material having a nano-size structure, such as carbon nanowall (CNW). A method of manufacturing the structure is also disclosed. The structure and method simplify the process of manufacturing a fuel cell electrode comprised of an electrode catalyst layer and a gas diffusion layer. The electrical conductivity of the catalyst layer is increased and the diffusion efficiency of the diffusion layer is improved, whereby the electricity generation efficiency of the fuel cell can be improved.

The present invention relates to a method for producing an electrolytic copper foil, the method enabling providing an electrolytic copper foil such that the electrical conductivity is 99% or more, thethickness is 10 [mu]m or less, a problem of a bend is suppressed, the front side and the rear side are flat, the tensile strength is 500 MPa or more, and the elongation percentage is 5.5% or more. The method for producing an electrolytic copper foil includes forming an electrolytic copper foil by using, as an electrolytic solution, a sulfuric acid-copper sulfate aqueous solution not containing aheavy metal other than a copper metal, using an insoluble anode and a cathode drum facing the insoluble anode, and passing a direct current between these electrodes, wherein, in the electrolytic solution, particular additives (A) to (E) are contained each in a particular amount, and the additive (D) and the additive (A) are each added in a ratio such that (D)/(A) is 0.2 to 0.7.

A fiber-containing mats for a lead acid batteries are described. The mats contain a plurality of polymer fibers having at least one additive incorporated into at least a portion of the polymer fibers. The one or more additives suppress hydrogen evolution in the lead acid battery, and have a standard boiling point of 160° C. or more. Also described are lead acid batteries that include an electrode having an electrode active material held in a fiber-containing gauntlet made from a mat or fabric of polymer fibers having at least one additive for improving battery performance incorporated into the polymer fibers.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a pole piece for a button battery. The pole piece comprises a current collector including a coating area and an empty foil area which are adjacently arranged, an active substance layer and a tab, wherein the empty foil area is provided with unfoldable wrinkles; the active substance layer is arranged on at least one surface of the coating area; and the tab is connected with the empty foil area. According to the invention, the current collector empty foil area is provided with the unfoldable wrinkles so that in the charging expansion process of a roll core of the button battery, the wrinkles of the current collector empty foil area of the outermost layer pole piece of the roll core have a certain extension space, and the outermost layer pole piece of the roll core can be prevented from being broken due to a pulling stress; and the reject ratio of a large internal resistance and the reject ratio of a zero voltage are also reduced.

The invention relates to the technical field of lithium batteries, in particular to a preparation method of a composite modified lithium metal soft package battery, which comprises the following steps: in the assembly process of the soft package lithium battery, placing microporous copper foils between a metal lithium alloy negative electrode and a diaphragm, and placing the metal lithium alloy negative electrode in two microporous copper foils; the two microporous copper foils being jointly connected to the nickel tab, the microporous copper foils forming a physical protection effect on the lithium metal negative electrode, and arranging the positive plate on the other side of the diaphragm; and inhibiting the growth of lithium metal dendrites by adopting the carbon-coated diaphragm. Themicroporous copper foil modified metal lithium alloy negative electrode provided by the invention realizes good application in a lithium battery, the modification method is simple and easy to implement, the control requirement is low, mass production is easy, no special test environment or special device investment is needed, an original lithium battery production line and equipment can be utilized, a production system does not need to be modified, meanwhile, the electrochemical performance of the metal lithium alloy negative electrode can be improved, and the electrochemical cycling stabilityis improved.

The invention discloses a negative plate of a multi-element nano vanadium power battery and a preparation method for the negative plate of the multi-element nano vanadium power battery. The plate comprises a negative current collector of which the upper and lower surfaces are sequentially provided with a middle thin layer and an active outer layer from inside to outside respectively. In the negative plate of the multi-element nano vanadium power battery and the preparation method for the negative plate of the multi-element nano vanadium power battery, the upper and lower rough surfaces of the negative current collector are sequentially provided with the middle thin layer and the active outer layer from inside to outside respectively, and the middle thin layer is 1 to 5 microns thick and comprises components which are substantially the same as those of the active outer layer, so that adhesive forces between the middle thin layer and the negative current collector and between the middle thin layer and the active outer layer are strong, the powder dropping phenomenon of the negative plate of the multi-element nano vanadium power battery is effectively prevented, and the service life of the negative plate of the multi-element nano vanadium power battery is prolonged.

Metrology systems and processing methods for continuous lithium ion battery (LIB) anode pre-lithiation and solid metal anode protection are provided. In some embodiments, the metrology system integrates at least one complementary non-contact sensor to measure at least one of surface composition, coating thickness, and nanoscale roughness. The metrology system and processing methods can be used to address anode edge quality. The metrology system and methods can facilitate high quality and high yield closed loop anode pre-lithiation and anode protection layer deposition, alloy-type anode pre-lithiation stage control improves LIB coulombic efficiency, and anode coating with pinhole free and electrochemically active protection layers resist dendrite formation.

The invention discloses a preparation method of a 12 [mu]m battery aluminum foil. The 12 [mu]m battery aluminum foil is obtained through the steps of smelting, cast rolling, cold rolling, foil rolling and slitting; the specific smelting method comprises the steps that copper, silicon, iron, magnesium, zinc, manganese, titanium, an additive and aluminum are mixed and smelted, refining is carried out, standing is carried out after refining is completed, and melt is obtained; the additive is prepared by mixing the raw materials including expandable graphite, a strontium-titanium dioxide-silicon dioxide composite nano material, aluminum powder and polydimethylsiloxane. Through specific raw material combination, the basic mechanical performance is guaranteed.