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Publicaciones de los últimos 15 días/Last 15 days publications (excluidas pubs. CN y JP /CN and JP pubs. excluded)
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ELECTRODE PLATE, ELECTRODE ASSEMBLY AND RECHARGEABLE BATTERY INCLUDING THE SAME

Publication No.:  US2025226419A1 10/07/2025
Applicant: 
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
US_2025226419_PA

Absstract of: US2025226419A1

Provided is an electrode plate including an electrode plate layer, a current collector layer including a base layer, a first conductive layer and a second conductive layer respectively on an upper surface of the base layer and a lower surface of the base layer, a current collector part having at least one surface on which the electrode plate layer is located, an extension part extending outwardly from the current collector part, and a bent part connected to the extension part, and bent twice or more for the first conductive layer to contact the second conductive layer.

BATTERY PACK AND ELECTRIC DEVICE

Publication No.:  US2025226540A1 10/07/2025
Applicant: 
XIAMEN AMPACK TECH LIMITED [CN]
Xiamen Ampack Technology Limited
US_2025226540_PA

Absstract of: US2025226540A1

A battery pack includes a cell assembly and a connecting member. The cell assembly includes M cells stacked along a first direction. Each cell includes a cell housing, an electrode terminal, and an electrode assembly disposed within the cell housing. The connecting member includes N conductive sheets spaced apart. The electrode terminal is connected to the conductive sheet. Electrode terminals of adjacent cells are arranged in a non-overlapping manner in the first direction, reducing the risk of short circuits between adjacent electrode terminals. The electrode terminal is connected to the electrode assembly and extends out from the cell housing. Along the first direction, a projection of a portion, located outside the cell housing, of an electrode terminal of any one of the cells is separated from a projection of a portion, located outside the cell housing, of an electrode terminal of an adjacent cell in a second direction.

BATTERY TRAY ASSEMBLY, BATTERY PACK AND VEHICLE

Publication No.:  US2025226508A1 10/07/2025
Applicant: 
BYD COMPANY LTD [CN]
BYD COMPANY LIMITED
US_2025226508_PA

Absstract of: US2025226508A1

A battery tray assembly includes a tray and an electrically conductive member. The tray includes a mounting space and a detection port, the mounting space is configured to accommodate a battery module, and the tray is configured to be insulated from the battery module. The electrically conductive member is electrically connected to a potential point, at least a first part of the electrically conductive member is disposed inside the tray, and at least a second part of the electrically conductive member is exposed from the detection port and configured to detect whether an electrically conductive medium is present in the detection port.

METHOD OF MANUFACTURING ALL-SOLID-STATE BATTERY

Publication No.:  US2025226453A1 10/07/2025
Applicant: 
LG ENERGY SOLUTION LTD [KR]
LG ENERGY SOLUTION, LTD
US_2025226453_PA

Absstract of: US2025226453A1

A method for manufacturing an all-solid-state battery capable of suppressing a short phenomenon occurring at a lateral portion during battery operation by laminating each of the unit cells after isostatic pressurization is provided. The method of manufacturing an all-solid-state battery includes the steps of a) sequentially laminating a solid electrolyte and a positive electrode on one side or both sides of a negative electrode to form a monocell or bicell; b) isostatically pressurizing the monocell or bicell; and c) laminating two or more of the isostatically pressurized monocells or bicells with a positive electrode current collector interposed therebetween, thereby contacting both sides of the interposed positive electrode current collector with the positive electrodes.

BATTERY PACK

Publication No.:  US2025226493A1 10/07/2025
Applicant: 
SAMSUNG SDI CO LTD [KR]
Samsung SDI Co., Ltd
US_2025226493_PA

Absstract of: US2025226493A1

A battery pack includes a battery cell and a pouch accommodating the battery cell. The pouch includes a terrace extending in a first direction in which an electrode of the battery cell is drawn out. The pouch also includes a substrate including a protection element on a first surface configured to control charging and discharging of the battery cell. A second surface opposing the first surface is opposite to a module seating surface of the terrace. The pouch also includes a molding portion covering the protection element on the first surface, and a support between the molding portion and the substrate and configured to support the substrate.

FLUID COLLECTOR, THERMAL MANAGEMENT ASSEMBLY, BATTERY, AND ELECTRIC APPARATUS

Publication No.:  US2025226486A1 10/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECH HONG KONG LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
US_2025226486_PA

Absstract of: US2025226486A1

A fluid collector applied to a thermal management assembly of a battery includes a housing and a separation portion. The housing has a fluid collecting chamber, where the fluid collecting chamber is configured to be connected to a plurality of heat exchange channels in the thermal management assembly. The separation portion is provided on the housing to partition the fluid collecting chamber into a plurality of concave cavities. The plurality of heat exchange channels are connected in series and communicate with each other through the plurality of concave cavities.

NEGATIVE CURRENT COLLECTOR AND PREPARATION METHOD THEREOF, NEGATIVE ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRICAL DEVICE

Publication No.:  US2025226384A1 10/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECH HONG KONG LIMITED [CN]
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED
US_2025226384_PA

Absstract of: US2025226384A1

A negative current collector, the preparation method of the negative current collector, a positive electrode plate, a secondary battery and an electrical device are described. The negative current collector includes a substrate and a lithium alloy, where the lithium alloy is disposed on a surface of the substrate, and the lithium alloy includes lithium and a matrix material, an atomic ratio of lithium in the lithium alloy is 30% to 50%, and a plating amount of the lithium alloy is 2/m2 to 3/m2. During the charging process of the secondary battery, lithium atoms can be oxidized into lithium ions and enter an electrolyte solution to supplement lithium consumed for forming a solid electrolyte interphase (SEI) on a negative electrode of a lithium-ion battery, which helps to improve the quality of the SEI, thereby improving an first-cycle Coulombic efficiency of the secondary battery.

NEGATIVE ELECTRODE PLATE AND ELECTRODE ASSEMBLY, BATTERY CELL, BATTERY, AND ELECTRIC APPARATUS CONTAINING SAME

Publication No.:  US2025226399A1 10/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECH HONG KONG LIMITED [CN]
Contemporary Amperex Technology (Hong Kong) Limited
US_2025226399_PA

Absstract of: US2025226399A1

A negative electrode plate and an electrode assembly, a battery cell, a battery, and an electric apparatus containing the same are provided. The negative electrode plate (10) includes: a negative electrode current collector, having a first surface (10a) and a second surface (10b) opposite each other in a thickness direction of the negative electrode current collector; a first negative electrode film layer located on the first surface side, the first negative electrode film layer including first silicon-based negative electrode active material particles; and a second negative electrode film layer located on the second surface side, the second negative electrode film layer including second silicon-based negative electrode active material particles; where a capacity C1 per unit area of the first negative electrode film layer and a capacity C2 per unit area of the second negative electrode film layer satisfy: 0.005 mAh/mm2≤C2

ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Publication No.:  US2025226383A1 10/07/2025
Applicant: 
SAMSUNG SDI CO LTD [KR]
SAMSUNG SDI CO., LTD
US_2025226383_PA

Absstract of: US2025226383A1

Electrodes and rechargeable lithium batteries including the same are provided. The electrode comprises a current collector, and a multiple active material layer on the current collector. The multiple active material layer includes a first electrode mixture layer on the current collector, a second electrode mixture layer on the first electrode mixture layer, and a third electrode mixture layer on the second electrode mixture layer. Each of the first, second, and third electrode mixture layers includes an electrode active material and a binder. The first, second, and third electrode mixture layers have different binder amounts. A first thickness of the first electrode mixture layer is less than a second thickness of the second electrode mixture layer. The first thickness is less than a third thickness of the third electrode mixture layer.

ANODE-SOLID ELECTROLYTE SUBASSEMBLY FOR ALL-SOLID SECONDARY BATTERY, AND ALL-SOLID SECONDARY BATTERY INCLUDING THE SAME

Publication No.:  US2025226395A1 10/07/2025
Applicant: 
SAMSUNG SDI CO LTD [KR]
Samsung SDI Co., Ltd
US_2025226395_PA

Absstract of: US2025226395A1

An anode-solid electrolyte subassembly includes an anode current collector, an anode active material layer disposed on the anode current collector, and a solid electrolyte disposed on the anode active material layer. The anode active material layer includes a first anode active material layer contacting the solid electrolyte, and a second anode active material layer contacting the anode current collector. The first anode active material layer includes a first anode active material containing: a mixture/composite of a carbon and one or more first elements selected from metals and metalloids, and the second anode active material layer includes a second anode active material containing: a mixture/composite of a carbon and one or more second elements selected from metals and metalloids, wherein the amount of the first elements is more than the amount of the second elements, and the amount of the first elements is about 25 wt % to about 80 wt % with respect to the total weight of the first anode active material.

STRIP MATERIAL DETECTION DEVICE, WINDING APPARATUS, AND METHOD FOR MANUFACTURING ELECTRODE ASSEMBLY

Publication No.:  WO2025145632A1 10/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
CONTEMPORARY AMPEREX RUNZHI SOFTWARE TECH LIMITED [CN]
\u5B81\u5FB7\u65F6\u4EE3\u65B0\u80FD\u6E90\u79D1\u6280\u80A1\u4EFD\u6709\u9650\u516C\u53F8,
\u5B81\u5FB7\u65F6\u4EE3\u6DA6\u667A\u8F6F\u4EF6\u79D1\u6280\u6709\u9650\u516C\u53F8
WO_2025145632_PA

Absstract of: WO2025145632A1

Provided in the present application are a strip material detection device, a winding apparatus, and a method for manufacturing an electrode assembly. The strip material detection device comprises a mounting frame, a first roller, a second roller, and a detection component, wherein the first roller is connected to the mounting frame and is rotatable about a first axis. The second roller is connected to the mounting frame and is rotatable about a second axis; the first axis is parallel to the second axis; a passage for a strip material to pass through is formed between the first roller and the second roller; and the second roller is movable close to or away from the first roller in a first direction. The detection component is configured to detect the displacement of the second roller in the first direction.

SECONDARY BATTERY AND PREPARATION METHOD THEREFOR, AND ELECTRIC DEVICE

Publication No.:  WO2025145690A1 10/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
\u5B81\u5FB7\u65F6\u4EE3\u65B0\u80FD\u6E90\u79D1\u6280\u80A1\u4EFD\u6709\u9650\u516C\u53F8
WO_2025145690_A1

Absstract of: WO2025145690A1

A secondary battery and a preparation method therefor, and an electric device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, a gel electrolyte, and a solid electrolyte membrane which is of a through hole-free structure; the solid electrolyte membrane is located between the positive electrode sheet and the negative electrode sheet; the positive electrode sheet comprises a positive electrode active material layer; the gel electrolyte is at least located between the positive electrode active material layer and the solid electrolyte membrane and in pores of the positive electrode active material layer; and the gel electrolyte comprises a nitrile additive. In this way, the high-temperature storage performance and the cycle performance of the secondary battery are effectively improved.

SECONDARY BATTERY AND PREPARATION METHOD THEREFOR, AND ELECTRIC DEVICE

Publication No.:  WO2025145692A1 10/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
\u5B81\u5FB7\u65F6\u4EE3\u65B0\u80FD\u6E90\u79D1\u6280\u80A1\u4EFD\u6709\u9650\u516C\u53F8
WO_2025145692_A1

Absstract of: WO2025145692A1

A secondary battery and a preparation method therefor, and an electric device. The secondary battery comprises a positive electrode sheet, a negative electrode sheet, an electrolyte solution, a gel electrolyte, and a separator that is arranged between the positive electrode sheet and the negative electrode sheet, wherein the negative electrode sheet comprises a negative electrode active material layer; the gel electrolyte is at least located between the negative electrode active material layer and the separator and within pores in both the negative electrode active material layer and the separator; and the electrolyte solution contains a nitrile additive. Therefore, the high-temperature storage performance and cycling performance of a secondary battery are effectively improved.

THERMAL MANAGEMENT ASSEMBLY, BATTERY BOX, BATTERY AND ELECTRIC DEVICE

Publication No.:  WO2025145662A1 10/07/2025
Applicant: 
CONTEMPORARY AMPEREX TECH CO LIMITED [CN]
\u5B81\u5FB7\u65F6\u4EE3\u65B0\u80FD\u6E90\u79D1\u6280\u80A1\u4EFD\u6709\u9650\u516C\u53F8
WO_2025145662_PA

Absstract of: WO2025145662A1

Provided in the embodiments of the present disclosure are a thermal management assembly, a battery box, a battery and an electric device. The thermal management assembly comprises a flow channel plate, an energy absorption member and a plurality of current collectors, wherein the flow channel plate is configured to convey fluid to perform heat exchange with battery cells; the current collectors are connected to the flow channel plate; and the energy absorption member is arranged on the sides of the current collectors away from the flow channel plate, and the energy absorption member comprises a force bearing portion and a deformation portion, the force bearing portion being located at the end of the deformation portion away from the current collectors, and the rigidity of the deformation portion being smaller than that of the force bearing portion.

BATTERY PACK

Publication No.:  US2025226542A1 10/07/2025
Applicant: 
VEHICLE ENERGY JAPAN INC [JP]
VEHICLE ENERGY JAPAN INC
US_2025226542_PA

Absstract of: US2025226542A1

To obtain a small-sized busbar in which a portion overlapping a terminal part of a battery is flat while stress applied to a joining surface is mitigated. A battery pack 1 according to the present invention has: a battery group in which a plurality of unit batteries 2 having positive-electrode terminals 2a and negative-electrode terminals 2b are stacked, with the positive-electrode terminal 2a of one unit battery 2A among mutually adjacent unit batteries 2 and the negative-electrode terminal 2b of the other unit battery 2B being adjacent in the stacking direction; and a busbar 10 for joining the positive-electrode terminal 2a of the one unit battery 2A and the negative-electrode terminal 2b of the other unit battery 2B. The busbar 10 has a positive-electrode plate 100 joined to the positive-electrode terminal 2a of the one unit battery 2A, and the negative-electrode plate 200 joined to the negative-electrode terminal 2b of the other unit battery 2B. At least one of the positive-electrode plate 100 and the negative-electrode plate 200 has a step-form shape bent in a stepwise manner, the joining being carried out via the step-form portion.

SECONDARY BATTERY AND BATTERY PACK

Publication No.:  US2025226492A1 10/07/2025
Applicant: 
MURATA MFG CO LTD [JP]
MURATA MANUFACTURING CO., LTD
US_2025226492_PA

Absstract of: US2025226492A1

Provided is a secondary battery that is superior in vibration resistance but not degraded in manufacturability. The secondary battery includes an electrode wound body and a battery can. The electrode wound body includes a positive electrode and a negative electrode that are stacked on each other with a separator interposed between the positive electrode and the negative electrode and are wound around a central axis The battery can has a circular columnar outer shape in which a height direction corresponds to a direction along the central axis. The battery can contains the electrode wound body. The battery can includes a container and a cover part. The container includes a lower end part and an upper end part. The lower end part is closed by a bottom part. The upper end part is positioned on a side opposite to the lower end part in the height direction and has an opening through which the electrode wound body is passable. The cover part closes the opening of the container. Where a flattening of the electrode wound body is a ratio of a maximum diameter of the electrode wound body to a minimum diameter of the electrode wound body, the flattening of at least a portion of an upper part of the electrode wound body is greater than the flattening of at least a portion of a lower part of the electrode wound body.

Liquid Electrolyte Composition Comprising a Salt, Electrochemical Cell Comprising the Electrolyte Composition, Salt, and Use of the Salt in the Electrochemical Cell

Publication No.:  US2025226450A1 10/07/2025
Applicant: 
BAYERISCHE MOTOREN WERKE AG [DE]
Bayerische Motoren Werke Aktiengesellschaft
US_2025226450_PA

Absstract of: US2025226450A1

Liquid electrolyte compositions comprising a salt of the formula (I) which has an anionic complex comprising three bidentate ligands are provided. The complex comprises antimony as the central ion. Electrochemical cells comprising the liquid electrolyte composition are further provided. Salts of formula (I) are further provided.

BATTERY CONFIGURATIONS HAVING THROUGH-PACK FASTENERS

Publication No.:  US2025226537A1 10/07/2025
Applicant: 
STACKED ENERGY INC [US]
Stacked Energy, Inc
US_2025226537_PA

Absstract of: US2025226537A1

Energy storage devices, battery cells, and batteries of the present technology may include a first circuit board defining a plurality of apertures through the first circuit board. The batteries may include a battery stack overlying the first circuit board and electrically coupled with the first circuit board. The battery stack may include a plurality of battery cells. The battery stack may define a plurality of apertures axially aligned with a corresponding aperture through the first circuit board. The batteries may include a second circuit board that defines a plurality of apertures through the second circuit board. The batteries may include a plurality of fasteners, each fastener extending through a separate channel of the plurality of channels. The batteries may include a plurality of conductive extensions electrically coupling each battery cell of the battery stack with one or more fasteners of the plurality of fasteners.

NEGATIVE ELECTRODE PLATE, SECONDARY BATTERY, AND ELECTRONIC APPARATUS

Publication No.:  US2025226438A1 10/07/2025
Applicant: 
XIAMEN AMPACE TECH LIMITED [CN]
Xiamen Ampace Technology Limited
US_2025226438_PA

Absstract of: US2025226438A1

A negative electrode plate includes a negative electrode material. The negative electrode material includes a matrix material, and a fast ion conductor is present on a surface of the matrix material. The fast ion conductor is a lithium lanthanum zirconium oxide. Dv50 of the matrix material is D1 μm, and Dv50 of the fast ion conductor is D2 μm, where D2/D1≤0.1 and 0.05≤D2≤1.

CATHODES AND ELECTROLYTES FOR RECHARGEABLE MAGNESIUM BATTERIES AND METHODS OF MANUFACTURE

Publication No.:  US2025226437A1 10/07/2025
Applicant: 
UNIV OF PITTSBURGH OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION [US]
UNIVERSITY OF PITTSBURGH - OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION
US_2025226437_A1

Absstract of: US2025226437A1

The invention relates to Chevrel-phase materials and methods of preparing these materials utilizing a precursor approach. The Chevrel-phase materials are useful in assembling electrodes, e.g., cathodes, for use in electrochemical cells, such as rechargeable batteries. The Chevrel-phase materials have a general formula of Mo6Z8 (Z=sulfur) or Mo6Z18-yZ2y (Z1=sulfur; Z2=selenium), and partially cuprated Cu1Mo6Z8 as well as partially de-cuprated Cu1-xMgxMo6S8 and the precursors have a general formula of MxMo6Z8 or MxMo6Z18-yZ2y, M=Cu. The cathode containing the Chevrel-phase material in accordance with the invention can be combined with a magnesium-containing anode and an electrolyte.

SURFACE TREATED SOLID ELECTROLYTE LAYERS AND BATTERY CELLS THEREOF

Publication No.:  US2025226457A1 10/07/2025
Applicant: 
POLYPLUS BATTERY COMPANY [US]
PolyPlus Battery Company
US_2025226457_PA

Absstract of: US2025226457A1

An inorganic ion-conducting membrane treated to modify its surface properties can improve battery cell performance. Membrane surfaces positioned to directly interface with liquid electrolyte(s) on one or both of its major surfaces can be modified to mitigate polarization effects arising from ionic space charges at the solid electrolyte/liquid electrolyte interface when disposed in a battery cell. This surface modification can include fluid treatments that modify the ionic space charge layer to reduce battery cell polarization. The cell polarization can be reduced by at least 10 mV, 50 mV or at least 100 mV as a result of using this surface-modified membrane compared to the same membrane that was not surface-modified.

CYLINDRICAL NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

Publication No.:  US2025226454A1 10/07/2025
Applicant: 
PANASONIC ENERGY CO LTD [JP]
Panasonic Energy Co., Ltd
US_2025226454_PA

Absstract of: US2025226454A1

A cylindrical nonaqueous electrolyte secondary battery according to the present invention is provided with: a wound electrode body which is obtained by winding a positive electrode and a negative electrode with a separator being interposed therebetween; a nonaqueous electrolyte; and an outer package can in which the electrode body and the nonaqueous electrolyte are contained. The negative electrode has a bent part, which is bent toward the inner winding side, at a position that is closer to the winding start point than a facing part which faces a leading end part of the positive electrode on the inner winding side of the leading end part. This nonaqueous electrolyte secondary battery can suppress deformation of the negative electrode toward the leading end part of the positive electrode, thereby achieving good cycle characteristics.

Devices and Methods for Thermal Energy Storage by Direct Evaporative Cooling

Publication No.:  US2025226475A1 10/07/2025
Applicant: 
SHAMBERGER PATRICK J [US]
CHAKRAVARTY SOURAV [US]
THE TEXAS A&M UNIV SYSTEM [US]
Shamberger Patrick J,
Chakravarty Sourav,
The Texas A&M University System
US_2025226475_PA

Absstract of: US2025226475A1

Provided herein are direct evaporative cooling devices and systems that are in open and closed configurations for cooling hot solid components. The devices in both configurations generally have a casing with a perforated surface where sealed within are a water/vapor separator with a reservoir volume and a thermally conductive media therein through which heat evaporates water within the media such that evaporation cools the hot solid component. The closed configuration of the device includes a condensor to receive, recondense the vapor to water and re-inject the water into the reservoir volume.

COMPOSITION COMPRISING LITHIUM-CONTAINING COMPOUND, AND BATTERY DISPOSAL METHOD

Publication No.:  US2025223183A1 10/07/2025
Applicant: 
POSCO HOLDINGS INC [KR]
POSCO CO LTD [KR]
POSCO Holdings Inc,
POSCO Co., Ltd
US_2025223183_PA

Absstract of: US2025223183A1

The present disclosure relates to a lithium compound for recovering valuable metals and a method of recovering the same, and a method of recovering a lithium compound for recovering valuable metals includes: preparing a battery; freezing and forcibly discharging the battery; shredding the battery into a battery shredded material; and heating the battery shredded material, wherein the heating of the battery is performed in a temperature range of 1,100 to 1,400° C., a degree of vacuum (Log P atm) in the heating of the battery is in a range of −4 to 0, a lithium compound recovered through the heating of the battery contains impurities, and the impurities include, by wt %, 1.8 wt % or less (excluding 0 wt %) of Na, 0.06 wt % or less (excluding 0 wt %) of K, 0.62 wt % or less (excluding 0 wt %) of Ca, and 0.47 wt % or less (excluding 0 wt %) of Mg.

LOW-DEFECT CARBON NANOTUBE SLUDGE AND PREPARATION METHOD THEREFOR, CONDUCTIVE COMPOSITE MATERIAL BASED ON THE LOW-DEFECT CARBON NANOTUBE, NEGATIVE ELECTRODE SLURRY USING SAME, NEGATIVE ELECTRODE, AND LITHIUM SECONDARY BATTERY

Nº publicación: US2025223167A1 10/07/2025

Applicant:

KOREA ELECTROTECHNOLOGY RES INSTITUTE [KR]
KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

US_2025223167_PA

Absstract of: US2025223167A1

The present invention relates to a low-defect carbon nanotube sludge and a preparation method therefor, a conductive composite material based on the low-defect carbon nanotube, a negative electrode slurry using same, a negative electrode, and a lithium secondary battery, and has the technical gist of comprising carbon nanotubes that have crystallinity while satisfying relational expression 1 below. relational expression 1 5≤IG/ID≤50 (wherein IG/ID is a value calculated as a ratio of a maximum peak intensity (IG) measured at 1,580±50 cm−1 to a maximum peak intensity (ID) measured at 1,360±50 cm−1 in a wavenumber region of a Raman spectrum.)

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