(19)
(11) EP 4 194 525 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
02.08.2023 Bulletin 2023/31

(43) Date of publication:
14.06.2023 Bulletin 2023/24

(21) Application number: 21928351.2

(22) Date of filing: 24.09.2021
(51) International Patent Classification (IPC): 
C09J 127/14(2006.01)
C08F 14/22(2006.01)
H01M 10/0525(2010.01)
 C08F 2/38(2006.01)
H01M 4/62(2006.01)
(52) Cooperative Patent Classification (CPC):
Y02E 60/10; C08F 8/04; C08F 8/14; C08F 14/22; C09D 127/16; H01M 4/131; H01M 4/623; H01M 4/624; H01M 10/0525; H01M 2004/028
 
C-Sets:
  1. C08F 14/22, C08F 2/38;
  2. C08F 8/04, C08F 114/22;
  3. C08F 8/14, C08F 8/04, C08F 114/22;
(86) International application number:
PCT/CN2021/120319
(87) International publication number:
WO 2023/044754 (30.03.2023 Gazette 2023/13)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(71) Applicant: Contemporary Amperex Technology Co., Limited
Jiaocheng District Ningde City, Fujian 352100 (CN)

(72) Inventors:
  • ZHANG, Mengqin
    Ningde Fujian 352100 (CN)
  • ZHAO, Yanjie
    Ningde Fujian 352100 (CN)
  • LIN, Jianghui
    Ningde Fujian 352100 (CN)
  • LI, Xing
    Ningde Fujian 352100 (CN)
  • JIN, Haizu
    Ningde Fujian 352100 (CN)

(74) Representative: Ziebig Hengelhaupt Intellectual Property Attorneys Patentanwaltsanwaltskanzlei PartGmbB 
Leipziger Straße 49
10117 Berlin
10117 Berlin (DE)


(56) References cited: : 
   
       


    (54) BINDER COMPOUND, CONDUCTIVE BINDER, AND SECONDARY BATTERY COMPRISING SAME


    (57) The present disclosure provides a binder compound, a conductive binder, and a secondary battery containing the same. The binder compound of the present disclosure has a structure of formula (I), where R1 and R2 each independently represent a straight or branched C1-12 alkyl; R3 represents a halogen or cyano group; R4 represents a hydroxymethyl or amino; Z represents a straight or branched C1-12 alkylene; and m represents an integer selected from 7600-47000. The binder compound and the conductive binder of the present disclosure can improve the storage and cycle performances of the secondary battery.