The Polymer Society of Korea

대학원생 구두발표(ACS) (영어발표)

구두발표

Copolymer Binder for Lithium Metal Batteries with Enhanced Interfacial Stability and Long-Term Cyclability

bushra Rashid (kyungpook national university)

정인우 (Department of Applied Chemistry, Graduate School of Chemical Engineering and Applied Chemistry, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, S. Korea)

bushra Rashid (kyungpook national university), 우수정 (Department of Applied Chemistry, Graduate School of Chemical Engineering and Applied Chemistry, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, S. Korea), 김주현 (Department of Applied Chemistry, Graduate School of Chemical Engineering and Applied Chemistry, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, S. Korea), 정인우 (Department of Applied Chemistry, Graduate School of Chemical Engineering and Applied Chemistry, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, S. Korea)

Lithium metal is a promising anode for next-generation batteries due to its high theoretical capacity (3860 mAh/g) and low redox potential (−3.04 V), but it shows low coulombic efficiency and dendritic growth. Binders play a great role in fixing these issues. PVDF is commonly used but it poses environmental concerns because of PFAS. Therefore, sustainable fluorine-free alternatives are urgently required. In this study, novel fluorine-free copolymer binders (FFCBs) were synthesized as substitutes for PVDF. LMB using FFCB exhibited Coulombic efficiency of 100% up to 460 cycles and delivered a capacity of 3600 mAh/g after 50 cycles at 0.2 C, surpassing PVDF-based systems, and no dendritic growth after 200 cycles, indicating enhanced interfacial stability. These results demonstrate that fluorine-free polymer binders are a viable and sustainable alternative to PVDF for high-performance LMB. (Acknowledgement: NRF RS-2020-NR055190; MOTIE RS-2024-00430401, RS-2025-11162970)

OA-9

2026-04-08  15:00 - 15:15