1. WO2026174519 - POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

Publication Number WO/2026/174519

Publication Date 27.08.2026

International Application No. PCT/CN2025/078433

International Filing Date 21.02.2025

IPC

H01M 4/36 2006.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
36	Selection of substances as active materials, active masses, active liquids

H01M 4/36 2006.1

H	ELECTRICITY
01	ELECTRIC ELEMENTS
M	PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4	Electrodes
02	Electrodes composed of, or comprising, active material
36	Selection of substances as active materials, active masses, active liquids

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Applicants

• 湖北万润新能源科技股份有限公司 HUBEI WANRUN NEW ENERGY TECHNOLOGY CO., LTD. [CN]/[CN]

Inventors

• 王勤 WANG, Qin
• 江雪林 JIANG, Xuelin
• 刘海堰 LIU, Haiyan
• 吕飞 LV, Fei
• 王伟 WANG, Wei

Agents

• 华进联合专利商标代理有限公司 ADVANCE CHINA IP LAW OFFICE

Priority Data

202510186601.4

19.02.2025

CN

Publication Language Chinese (zh)

Filing Language Chinese (zh)

Designated States

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AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CV, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IQ, IR, IS, IT, JM, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, MG, MK, MN, MU, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UY, UZ, VC, VN, WS, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, CV, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SC, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, ME, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)

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Title

(EN) POSITIVE ELECTRODE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF

(FR) MATÉRIAU D'ÉLECTRODE POSITIVE, SON PROCÉDÉ DE PRÉPARATION ET SON UTILISATION

(ZH) 正极材料及其制备方法和应用

Abstract

(EN) The present application relates to the field of lithium-ion batteries, and provides a positive electrode material, and a preparation method therefor and a use thereof. The positive electrode material comprises first core particles and a first coating layer coating the surfaces of the first core particles. The chemical general formula of the first core particles is Li_aFe_bTiAl_c(PO₄)_d, and the first coating layer is a carbon layer, wherein 7.5≤a≤14.5, 5≤b≤10, 0.1≤c≤0.2, and a/3+1.02×(2/3b+1+c)≤d≤a/3+1.05×(2/3b+1+c). The positive electrode material in embodiments of the present application has both a relatively high capacity and a relatively high compacted density.

(FR) La présente demande se rapporte au domaine technique des batteries lithium-ion et concerne un matériau d'électrode positive, ainsi que son procédé de préparation et son utilisation. Le matériau d'électrode positive comprend des premières particules de noyau et une première couche de revêtement recouvrant les surfaces des premières particules de noyau. La formule générale chimique des premières particules de noyau est Li_aFe_bTiAl_c(PO₄)_d, et la première couche de revêtement est une couche de carbone, 7,5 ≤ a ≤ 14,5, 5 ≤ b ≤ 10, 0,1 ≤ c ≤ 0,2, et a/3 + 1,02 × (2/3b + 1 + c) ≤ d ≤ a/3 + 1,05 × (2/3b + 1 + c). Le matériau d'électrode positive dans des modes de réalisation de la présente demande présente à la fois une capacité relativement élevée et une densité compactée relativement élevée.

(ZH) 本申请提供了一种正极材料及其制备方法和应用，属于锂离子电池领域，其中，正极材料包括第一内核颗粒及包覆于第一内核颗粒表面的第一包覆层，第一内核颗粒的化学通式为Li_aFe_bTiAl_c(PO₄)_d，第一包覆层为碳层；其中，7.5≤a≤14.5，5≤b≤10，0.1≤c≤0.2，a/3+1.02×(2/3b+1+c)≤d≤a/3+1.05×(2/3b+1+c)。本申请实施例的正极材料同时具有较高的容量以及较高的压实密度。

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