Back to results
US 2024/0218169 A1Published application
Binder and preparation method thereof, separator, electrode assembly, battery cell, battery, and electric apparatus
AssigneeContemporary Amperex Technology Co., Limited
InventorsLei LI, Haiyi HONG, Xiaonan CHENG, Jianrui YANG, Peng WANG, Yi ZHENG, Chengdong SUN
Life of this patent
Estimating the term…
Abstract
A binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure and fully enveloping the core layer structure. The core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.
Claims18
A binder, comprising:
- a core layer structure comprising a polyacrylate polymer;
- and
- a shell layer structure provided on a surface of the core layer structure and fully enveloping the core layer structure, the shell layer structure comprising a polyvinylidene fluoride polymer.
A preparation method of a binder, comprising:
- mixing and stirring water, an emulsifier, an initiator, and constituent monomers of a polyacrylate polymer and heating for reaction to obtain a core-layer seed emulsion;
- and
- putting water, an emulsifier, an initiator, and constituent monomers of a polyvinylidene fluoride polymer into the core-layer seed emulsion, stirring, and heating under a reaction pressure for polymerization reaction, to obtain the binder having a core-shell structure;
- wherein a shell layer structure of the binder fully envelops a core layer structure of the binder.
1 more element
Dependencies are inferred from the claim text.