772results about "Primary cell electrodes" patented technology

The embodiments described herein involve electrochemical cells that have a heating element integrated into the electrochemical cell. In some aspects, an electrochemical cell comprises an anode current collector, an anode material disposed on the anode current collector, a cathode current collector, a cathode material disposed on a first side of the cathode current collector, a separator disposed between the anode material and the cathode material, and a heating element disposed on a second side of the cathode current collector, the second side opposite the first side. The heating element may include an electrically conductive material and a conductive material and disposed in an insulative material.

The present invention relates to an electrode and / or cathode stabilized by a transition layer, comprising: (a) a porous chalcogenide-based electrode, more desirably sulfur, comprising of predominantly crystalline allotropes within the core; (b) at least one of a glass, polymeric and amorphous chalcogenide, more desirably sulfur allotropes present within the transition layer and / or shell covering the surface of the active electrode material, the transition layer comprising of a two-dimensional (2D) material, covalently bonded between said 2D material and the chalcogenide, more desirably sulfur of the electrode material, and 12 weight % or less, based on the total weight of the coated electrode, of polymeric sulfur; and (c) a coating layer on top of the transition layer said coating layer comprising a 2D material, (d) a presence of density gradient between the crystalline core and glass / polymeric / amorphous shell, (e) an electrode in which the volume of crystalline allotrope present within the inner voids represents a buffer volume utilized to compensate the volumetric fluctuation during battery cycling, (f) a chalcogenide electrode, more desirably a sulfur-rich electrode, where the electrode active mass consists of binary and or ternary dopant such as selenium, tellurium having composition (SexSy), (TexSy), (TexSySez), wherein the mass content of sulfur in the cathode is above 50% per weight of the total chalcogenide content, wherein (g) the coated electrode and / or cathode, comprising at least one sulfur allotrope that is doped with a chalcogenide, a halogen, or a mixture thereof, more desirably comprised from 0.001 to 50 weight % of the chalcogenide, halogen or mixture thereof, based on the total weight of the sulfur allotrope, such as 0.01 to 49 weight %, 0.1 to 45 weight %, 0.5 to 44 weight % or 0.75 to 43 weight %, such as 1 weight %, 1.5 weight % or 2 weight % of the chalcogenide, halogen or mixture thereof.

The invention provides a thermal battery pole piece coating assembly line based on modular design, and relates to the technical field of thermal electrode piece processing control, and multiple optimization algorithms are applied on the thermal electrode piece coating assembly line, so that the assembly line can be used for coating thermal electrode pieces according to different production requirements and conditions. Strategies in the aspects of module combination, production scheduling, energy management, material distribution and the like are automatically adjusted, intelligent production decision making is achieved, manual intervention is reduced, the automation level and accuracy of production are improved, different modules can be flexibly combined on an assembly line through modular design, the assembly line is suitable for coating production of thermal battery pole pieces of different specifications and types, and the production efficiency is improved. Meanwhile, the optimization algorithm can be adjusted according to different production tasks, so that the assembly line has higher adaptability and universality, can quickly respond to the change of market requirements, can accurately control the coating process and optimize the material delivery path, reduces the waste of raw materials and the loss of resources, improves the utilization efficiency of the resources, and reduces the production cost. And sustainable utilization of resources is realized.

The invention discloses an ultrasonic welding head, a tab, an electrode assembly, a single battery, a battery and a power utilization device.The ultrasonic welding head comprises a welding head body and first welding teeth, the welding head body is provided with a welding face, the first welding teeth are arranged on the welding face in a protruding mode, and each first welding tooth comprises a plurality of tooth parts; the multiple tooth parts are the first tooth part and the mth tooth part which are sequentially arranged in the protruding direction of the first welding tooth, the nth tooth part is arranged on the end face of the end, away from the welding face, of the (n-1) th tooth part, the end face of the end, away from the welding face, of the (n-1) th tooth part exceeds the nth tooth part, and n is larger than or equal to 2 and smaller than or equal to m. The ultrasonic welding head can reliably weld corresponding parts of the battery monomer, and the service reliability of the battery monomer is improved.

The invention discloses a high mass specific energy power primary battery and electric equipment, and relates to the technical field of batteries. Comprising a cover group, a shell, a positive pole piece, a diaphragm, a negative pole piece, a thermistor, an electrolyte, a bottom cover plate and a hole plugging piece, the shell is of a hollow cylindrical structure with two open ends and is covered by the cover set and the bottom cover plate to form a containing cavity. A collector plate and a pole are made of a high-conductivity metal material, and the pole and a cover group body are hermetically connected through a glass body; the negative pole piece is provided with a supporting structure, each of the positive pole piece and the negative pole piece is provided with at least one pole lug, the positive pole piece or the negative pole piece is coated with a diaphragm of a coating layer and placed in the accommodating cavity, the negative pole lug is connected with a bottom cover plate, the positive pole lug is connected with one end of a thermistor, the other end of the thermistor is connected with a collector plate, and electrolyte is injected to prepare the battery. The problems of continuous current output of more than 5C, use in an environment of-55 DEG C to 125 DEG C, overload impact of gravitational acceleration of more than 10 times, impact of environment temperature, storage for more than 10 years and the like of a primary battery are solved.

The invention discloses a lithium battery pole piece dry method manufacturing process and a manufacturing equipment assembly, and the lithium battery pole piece dry method manufacturing process comprises the following steps: a powder material preparation part: mixing raw materials, kneading and fiberizing to form a powder material; the film material preparation part is used for extruding the powder material from a discharging channel to a material receiving surface, a metering gap is formed between the discharging channel and the material receiving surface, and the material receiving surface can move relative to the discharging channel, so that the powder material is spread to the material receiving surface, the powder material on the material receiving surface is rolled, and the powder material is changed into a film material. According to the lithium battery pole piece dry method manufacturing process and the manufacturing equipment assembly, the thickness of a film material can be controlled, the thickness deviation of the film material is reduced, and the influence on the product quality is avoided.

The utility model relates to the technical field of lithium battery production, and discloses a roller press for lithium battery production, which comprises a mounting seat, the mounting seat is provided with a compression roller mechanism for rolling and coating a pole piece, and cleaning structures are arranged on two sides of the compression roller mechanism and are used for cleaning residual paint and impurities on a compression roller; the cleaning structure comprises a dust collecting shell, a baffle and a scraper, the dust collecting shell makes contact with the two pressing rollers and is used for scraping away residual coating and impurities on the pressing rollers, the residual coating and impurities scraped away from the pressing rollers slide into the baffle through the dust collecting shell, and the scraper is fixedly installed on the baffle. And by arranging the cleaning structure, the first pressing roller and the second pressing roller rotate, coating and impurities left on the surfaces of the first pressing roller and the second pressing roller can be cleaned through a scraping plate on the cleaning structure, the cleaned impurities fall into the dust collecting shell to be collected, and the surfaces of the pressing rollers are kept clean.

The utility model provides a dry process electrode production equipment, which relates to the field of battery manufacturing technology. The dry process electrode production equipment includes a first feeding device, a first shaping roller group, a second feeding device, a second shaping roller group, a foil unwinding device and a composite winding device. The first shaping roller group is arranged downstream of the first feeding device; the second feeding device is spaced apart from the first feeding device; the second shaping roller group is arranged downstream of the second feeding device; the foil unwinding device is arranged between the first feeding device and the second feeding device; the composite device is arranged downstream of the first shaping roller group, the second shaping roller group and the foil unwinding device. Compared with the prior art, the utility model can solve the problems of uneven thickness, poor mechanical strength and easy breakage of dry coating membranes, and the membrane and the foil are composited at one time, which simplifies the process and improves the equipment efficiency. Second membrane.

The invention relates to a composite current collector and a preparation method thereof, an electrode plate, a battery and an electric device. The composite current collector comprises a supporting layer, a bonding layer and a conducting layer, wherein the bonding layer and the conducting layer are sequentially stacked on the two opposite surfaces of the supporting layer in the direction away from the supporting layer; according to the composite current collector, the stripping force between the supporting layer and the conductive layer is effectively improved, and the stripping risk of the composite current collector under long-term soaking in electrolyte is reduced.

The invention provides a double-layer double-high type electrode, a reserve lithium battery and a preparation method thereof, the double-layer double-high type electrode comprises a current collector, a first active layer and a second active layer, the first active layer is located between the current collector and the second active layer, the first active layer contains an energy type active material, and the second active layer contains an energy type active material. The second active layer contains a pre-charged power type active material, and the open-circuit voltage difference between the energy type active material and the pre-charged power type active material is less than or equal to 0.5 V. The invention provides the double-layer double-high type electrode for the reserve lithium battery, which is quick in activation, high in energy density and good in rate capability, an efficient conductive network is constructed, and the discharge performance of the battery is improved; the porosity of the second material layer is regulated to be greater than that of the first material layer, and the seepage flow guide grooves are dug in the surface of the second material layer, so that the electrolyte infiltration rate of the electrode is improved, and the activation time is shortened.

A device is configured to be administered via an oral route by a subject. The device includes an anode, a seal disposed on the anode, and a cathode. When exposed to a liquid or a hydrogel, an exposed surface of the anode undergoes galvanic oxidation dissolution to provide DC power to the device. As the exposed surface of the anode undergoes galvanic oxidation dissolution, the seal incrementally detaches from the anode, and a substantially constant surface area of the exposed surface is maintained.

The invention relates to the technical field of metal-air solid-state batteries, in particular to a thin-film metal-air battery with a three-dimensional structure, a layer of thin-film solid-state electrolyte structure is arranged between a negative electrode material and a breathing electrode, and the breathing electrode and the negative electrode material are folded and form a three-dimensional straight-hole folded plate structure. The three-dimensional straight-hole folded plate structures are uniformly provided with a plurality of Z-shaped through regular ordered holes, so that the weight of the three-dimensional straight-hole folded plate structures can be reduced to realize light weight, the three-dimensional straight-hole folded plate structures are mutually stacked, and the three-dimensional straight-hole folded plate structures are arranged in an air circulation area of the battery; honeycomb holes with high regularity are formed in the three-dimensional straight hole folded plate structure, and the structure is used in an air circulation area of the air battery, so that the contact surface area of air and an electrode can be greatly increased, which means that more oxygen can be in contact with the electrode at the same time, the supply efficiency of the oxygen is improved, and the reaction of the oxygen and the electrode is promoted.

The invention provides a thick-electrode positive plate, a preparation method thereof and a primary battery. The method comprises the following steps: firstly, mixing a positive active material, a conductive agent and binder resin to obtain a mixture; carrying out fibration treatment on the mixed material to obtain a fibration mixed material; then, the fiberized mixed material and a granulating agent are subjected to granulation treatment, a precursor material is obtained, and the granulating agent is liquid with the vapor pressure not lower than 0.2 mmhg; finally, the precursor material is subjected to rolling film forming treatment, and the thick electrode positive plate is obtained. The preparation method provided by the invention can be widely applied to a battery system in which the thick electrode (greater than 500 microns) needs to be manufactured by using the current collecting net, and solves the problems that the thick electrode pole piece using the current collecting net is difficult to continuously and automatically produce, the powder falling rate of the pole piece is high, the thickness is not uniform and the like.

The invention discloses a preparation method of a high-specific-power manganese dioxide-carbon fluoride battery positive pole piece. The preparation method comprises the following steps: (1) carrying out high-temperature heat treatment on electrolytic manganese dioxide to finish crystal transformation of the electrolytic manganese dioxide; (2) carrying out ball milling on the manganese dioxide, the carbon fluoride and the conductive agent which are subjected to heat treatment to obtain a composite substance of the manganese dioxide, the carbon fluoride and the conductive agent; (3) stirring and mixing the composite substance with a binder, a surfactant and deionized water to form manganese dioxide-carbon fluoride battery positive electrode slurry; and (4) coating the prepared positive electrode slurry on an aluminum mesh with a certain surface density in an extrusion or roller coating manner, and carrying out drying and rolling processes to obtain the high-loading-amount manganese dioxide-carbon fluoride battery positive electrode plate with a certain compaction density and surface density. The prepared positive pole piece has relatively high conductivity and energy density, and the high-magnification application scene of the lithium manganese dioxide-carbon fluoride battery is further widened.

A disclosed cylindrical lithium primary battery (100) includes: an electrode group (10) in which a positive electrode (1), a negative electrode (2), and a separator (3) are wound; a short-circuit metal sheet (21) disposed on the negative electrode (1); and a battery case that accommodates the electrode group (10) and functions as a negative electrode terminal. The positive electrode (1) includes: a positive electrode current collector having a plurality of through holes; and a positive electrode mixture layer disposed on the positive electrode current collector. The positive electrode has a current collector exposed part (1c) where a part of the positive electrode current collector is exposed. The negative electrode (2) includes a lithium-containing metal sheet. The short-circuit metal sheet (21) contains at least one metal element M selected from the group consisting of copper, iron, nickel, and zinc. At least a part of the short-circuit metal sheet (21) and at least a part of the current collector exposed part (1c) face each other across the separator (3). The short-circuit metal sheet (21) is electrically connected to the battery case not through the lithium-containing metal sheet.

The non-aqueous electrolyte battery is excellent in high-temperature storage characteristics and load characteristics at low temperature. A non-aqueous electrolyte battery of the present invention includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte. The negative electrode includes a lithium layer, a lithium-aluminum alloy layer formed on a surface of the lithium layer, and a carbon layer on the lithium-aluminum alloy layer. The non-aqueous electrolyte battery of the present invention can be manufactured by a method for manufacturing a non-aqueous electrolyte battery that includes providing an aluminum layer on the surface of the lithium layer to obtain a laminate, forming the carbon layer on a surface of the aluminum layer to obtain a laminate for a negative electrode, and causing the lithium layer and the aluminum layer of the laminate for a negative electrode to react with each other to form the lithium-aluminum alloy layer.

Provided is an electrode stacked body that can be used for assembly of an electrochemical device and can reduce an internal resistance, a method for producing the electrode stacked body, and an electrochemical device that includes the electrode stacked body. The electrode stacked body of the present invention includes a first electrode, a second electrode, and an isolation layer interposed between the first electrode and the second electrode. At least one of the first electrode and the second electrode has an electrode mixture layer and a sheet-type porous metal base material. At least a part of the porous metal base material, including one end portion facing the electrode mixture layer, is embedded in a surface layer of the electrode mixture layer and integrated with the electrode mixture layer. The other end portion of the porous metal base material is exposed on the surface of the electrode. The electrochemical device of the present invention includes an exterior body having a conductive path leading to the outside and the electrode stacked body of the present invention. The porous metal base material on the surface of at least one electrode of the electrode stacked body is brought into contact with the conductive path, providing electrical conduction between the electrode and the conductive path.

An electrode assembly (100), a battery cell (201), a battery (200), and an electrical device (1000). The electrode assembly (100) comprises a first electrode plate (10), a second electrode plate (20) and a separator (30), the separator (30) isolating the first electrode plate (10) from the second electrode plate (20), and the first electrode plate (10), the second electrode plate (20) and the separator (30) being wound to form an integral body. In an innermost ring of the electrode assembly (100), the first electrode plate (10) is disposed closer to an inner side of the electrode assembly relative to the second electrode plate (20). The first electrode plate (10) comprises a body (11), and a tab (12) connected to the body (11). The body (11) is formed having a notch (13) extending along a width direction of the first electrode plate (10). The notch (13) and the tab (12) are disposed at an interval along a winding path of the electrode assembly (100).

A battery includes a cathode that is containing manganese dioxide and graphite, an anode that is containing zinc, an electrolyte in which the cathode and the anode are immersed, and a polyethyleneimine ethoxylate that is contained in the anode or in the electrolyte.

The invention relates to a method and a manufacturing device (2) for producing a planar battery electrode (1), the battery electrode (1), a battery cell, a battery, and a motor vehicle. A surface (5, 6) of a planar current collector (3) is coated with active material (4) by defining an active material region (7) on the surface (5, 6) of the current collector. In this region, an electrically conductive adhesive layer (9) made of an adhesive (10) is applied directly to the surface (5, 6) of the current collector by means of an adhesive application unit, precisely matching the contour. An active material layer (11) made of active material (4) is applied to the surface (5, 6) of the current collector by means of an active material application unit. This layer completely covers the active material region (7), so that the adhesive layer (9) forms an adhesive bond between the current collector (3) and the active material layer (11) in the active material region (7).A loose active material fraction (12) of the applied active material layer (11), which was applied outside the active material area (7) to the surface of the conductor body (5, 6), is removed from the surface of the conductor body (5, 6) by means of a removal unit (13).

This invention relates to the field of magnesium primary battery preparation technology, and discloses a magnesium aqueous primary battery system, including a positive electrode, a negative electrode, and an electrolyte. The negative electrode is any one of magnesium metal and magnesium alloy. The positive electrode is made of a positive electrode active material, superconducting carbon, and a first-order gelatinizing agent. The electrolyte is made of magnesium bromide, a corrosion inhibitor, and a second-order gelatinizing agent. The preparation method includes the following steps: S1: preparing a positive electrode slurry; S2: preparing an electrolyte by introducing a corrosion inhibitor into the magnesium bromide electrolyte, followed by adding a second-order gelatinizing agent for gelatinization treatment to obtain a slow-release gelatinized electrolyte; S3: preparing a positive electrode steel shell; S4: assembling the battery. The technical solution of this invention not only slows down the corrosion rate of the negative electrode material and improves the utilization rate of the negative electrode material, but also solves the problems of voltage hysteresis and volume expansion during battery discharge; furthermore, it can match the reaction rates of the positive and negative electrodes.

An ultrasonic welding head (10). The ultrasonic welding head comprises a welding head main body (1) and first welding teeth (2); the welding head main body is provided with a welding surface (1a), the first welding teeth protruding from the welding surface; the first welding teeth comprise a plurality of tooth parts (20), the plurality of tooth parts respectively being a first tooth part (21) to an m-th tooth part which are successively arranged in the protruding direction of the first welding teeth; the n-th tooth part is arranged on the end surface of the end of the (n-1)th tooth part away from the welding surface, the end surface of the end of the (n-1)th tooth part away from the welding surface exceeding the n-th tooth part, and 2≤n≤m. The present application further relates to an ultrasonic welding device, an electrode assembly (30), a battery cell (100), a battery (200), and an electrical device (1000).

Disclosed is a cylindrical lithium primary battery (100) including: an electrode group (10) in which a positive electrode (1), a negative electrode (2), and a separator (3) are wound; an electrically insulating layer (22) disposed inside the electrode group (10); a short-circuiting metal sheet (21) disposed on the negative electrode (2); and a battery case (9). The positive electrode (1) includes a positive electrode mixture layer disposed on a positive electrode current collector. The negative electrode (2) includes a lithium-containing metal sheet. The short-circuiting metal sheet (21) contains at least one metal element M selected from the group consisting of copper, iron, nickel, and zinc. The lithium-containing metal sheet, the short-circuiting metal sheet (21), and the battery case (9) are electrically connected. The electrode group (10) has a layered portion (10x) in which the electrically insulating layer (22) is disposed. In the layered portion, the lithium-containing metal sheet, the short-circuiting metal sheet (21), the separator (3), the positive electrode (1), and the electrically insulating layer (22) are laminated in a prescribed order.

The invention provides a dust removal device, a laser cutting system and a battery production line, and the dust removal device comprises a main body used for covering a to-be-cut material, the main body is provided with a cutting avoiding gap, and the cutting avoiding gap penetrates through the surface, facing the to-be-cut material, of the main body and the surface, deviating from the to-be-cut material, of the main body; the cyclone cavity is arranged in the main body, the main body is provided with an air inlet channel and an air outlet channel which are communicated with the cyclone cavity, the cyclone cavity penetrates through the surface, facing a to-be-cut material, of the main body, and the side, facing the cutting avoiding gap, of the cyclone cavity and the cutting avoiding gap have a first overlapping part. Due to the fact that the side, facing the cutting receding gap, of the cyclone cavity and the cutting receding gap are provided with the first coincident part, the edge high-speed area of the high-speed upward-spinning airflow can act on the cutting receding gap, and the airflow in the cutting receding gap has the high flow speed.

The invention discloses a high-capacity and high-energy-density lithium / carbon fluoride battery and a preparation method thereof, and relates to the technical field of lithium / carbon fluoride batteries. The active carbon with high specific surface is added into the positive electrode slurry, and the porous structure of the active carbon provides more lithium ion transmission channels, so that LiF accumulation is relieved, polarization is reduced, and the discharge capacity and the energy density of the lithium / carbon fluoride battery are improved; and by optimizing the battery process ratio, the prepared lithium / carbon fluoride battery has high thermal conductivity and uniform heat dissipation, the thermal runaway risk is reduced, and the battery safety is improved.

The invention provides positive electrode slurry of a low-temperature lithium carbon fluoride battery and a slurry homogenizing method, the positive electrode slurry comprises a positive electrode active material, perfluorooctyl sulfonate, a binder, a conductive agent and a solvent, and the mass ratio of the positive electrode active material to the perfluorooctyl sulfonate is (85-90): (1-6); the homogenizing method comprises the following steps: uniformly mixing a positive electrode active material, perfluorooctyl sulfonate and a conductive agent according to a ratio to obtain a first mixture; dissolving a binder in a solvent according to a ratio to obtain a second mixture; and uniformly mixing the first mixture and the second mixture to obtain the positive electrode slurry of the low-temperature lithium carbon fluoride battery. The perfluorooctyl sulfonate is introduced into the positive electrode slurry, and through the synergism of the following effects: the diffusion path of lithium ions is reduced, the desolvation energy barrier of the lithium ions is reduced, the conductive agent is uniformly dispersed and participates in electrochemical reaction to generate fluoride with conductivity better than that of lithium fluoride, and the electrochemical performance of the low-temperature lithium carbon fluoride battery is improved.

The invention provides an alkaline zinc-manganese battery positive electrode dry premixing process and an alkaline zinc-manganese battery, the dry premixing process comprises the following steps: (1) preparing conductive agent powder and electrolytic manganese dioxide powder, the conductive agent powder comprising graphene powder; (2) taking out a part of the electrolytic manganese dioxide powder obtained in the step (1), and uniformly stirring and mixing the part of the electrolytic manganese dioxide powder and the conductive agent powder obtained in the step (1) for the first time to obtain a first uniformly mixed powder material, the part of the electrolytic manganese dioxide powder accounting for 10-50% of the total amount of the electrolytic manganese dioxide powder; and (3) adding all residual electrolytic manganese dioxide powder except the part of electrolytic manganese dioxide powder in the step (2) into the first uniformly mixed powder prepared in the step (2), and uniformly stirring and mixing for the second time to obtain the final uniformly mixed powder. The dry premixing process is beneficial to reduction of the internal resistance of the alkaline zinc-manganese battery and increase of the high-current discharge performance of the battery.

The invention relates to a method for manufacturing an electrode (K) for a lithium-ion battery cell, which is composed of a current collector foil (1) with an active material coated on one or both sides, containing PVDF as a binder. According to the invention, the method for adjusting the porosity of the active material layer (2) coated on the current collector foil (1) comprises at least one process step in which at least one external electric field is applied, which utilizes the dipolarity of PVDF such that the PVDF molecular chains contract, reducing porosity, or expand, increasing porosity.

The invention discloses a preparation method of a carbon fluoride material based on metal-based ionic liquid modification, which comprises the following steps: heating an ionic liquid to 30-100 DEG C in an inert atmosphere, then adding a metal salt, uniformly stirring to obtain a metal-based ionic liquid, dispersing the metal-based ionic liquid into an organic solvent, then adding carbon fluoride, uniformly stirring, carrying out suction filtration on the mixed solution, and drying to obtain the carbon fluoride material based on metal-based ionic liquid modification. And finally, calcining at 300-450 DEG C for 0-12 hours to obtain the catalyst. The method is simple in preparation process and low in cost, large-scale production can be achieved, the prepared carbon fluoride material has good rate capability and discharge capacity when serving as a lithium / carbon fluoride primary battery positive electrode material, and the problems that an existing lithium / carbon fluoride primary battery is poor in rate capability and poor in discharge capacity are solved. And the problems of low power density, voltage lag under high-rate discharge and low discharge capacity are solved.

The invention provides a lithium-manganese button cell positive electrode ring prepared based on a dry electrode process as well as a preparation method and application of the lithium-manganese button cell positive electrode ring. The method comprises the following steps: premixing electrolytic manganese dioxide (EMD) powder, a conductive agent and low-melting-point polytetrafluoroethylene (PTFE) fibers in a low-temperature environment; carrying out high-speed shearing on the premixed material to form a dry electrode blank material with self-supporting capability; the obtained dry electrode blank material is subjected to hot rolling through a heating roller device, and an obtained film material is conveyed back to the heating roller device to be subjected to second face rolling; wherein the temperature of the roller is controlled within a temperature range which is lower than the melting point of the PTFE fiber but is enough to enable the PTFE fiber to creep, and meanwhile, high pressure is applied; and die cutting and forming. The positive electrode ring of the lithium-manganese button cell prepared by the method has a unique gradient pore structure and a high-conductivity network, and polarization is greatly reduced, so that the cell is more suitable for an application scene of high pulse current discharge.