Crosslinked polyacrylic acid compositions for si / c anodes
Crosslinking polyacrylic acid with N, N'-substituted piperazine in silicon-based anode compositions addresses adhesion and electrical property issues, enhancing peel strength and reducing resistance for better battery performance.
WO2026112943A1PCT designated stage Publication Date: 2026-06-04DOW GLOBAL TECHNOLOGIES LLC +8
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- DOW GLOBAL TECHNOLOGIES LLC
- Filing Date
- 2024-11-29
- Publication Date
- 2026-06-04
AI Technical Summary
Technical Problem
Current anode compositions for silicon-based lithium-ion batteries face challenges in achieving strong adhesion to metal current collectors and improving electrical properties due to significant volume changes during charging and discharging, which leads to structure damage and rapid capacity fading.
Method used
A composition comprising polyacrylic acid polymer crosslinked with N, N'-substituted piperazine, enhancing intermolecular and intramolecular interactions to improve binder strength and electrical conductivity.
Benefits of technology
The crosslinked polyacrylic acid composition exhibits higher peel strength and lower electric resistance, resulting in improved battery capacity and performance.
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Smart Images
Figure CN2024135528_04062026_PF_FP_ABST
Abstract
A composition comprising the following components a) and b) : a) at least one polyacrylic acid polymer (PAA), and b) at least one compound of Structure B below: wherein each of R1, R2, R3, R4, R5, R6, R7 and R8 is independently H, or an alkyl; and nl and n2 are each independently an integer ≥ 1.
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