K 2 C 2 O 4 ‐Modified PVDF Electrolytes for Lithium‐Polymer Batteries: Synergistic LiF Interphase Formation and Mechanical Reinforcement for Dendrite Suppression
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Wiley
2026
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| _version_ | 1867007638137470976 |
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| author | Lingyi Kong Zhenjiang Du Beili Pang Can Cui Jianguang Feng Hongzhou Dong Lingyan Wang Liyan Yu Lifeng Dong |
| author_facet | Lingyi Kong Zhenjiang Du Beili Pang Can Cui Jianguang Feng Hongzhou Dong Lingyan Wang Liyan Yu Lifeng Dong Lingyi Kong Zhenjiang Du Beili Pang Can Cui Jianguang Feng Hongzhou Dong Lingyan Wang Liyan Yu Lifeng Dong |
| collection | Wiley Open Access |
| contents | K 2 C 2 O 4 ‐Modified PVDF Electrolytes for Lithium‐Polymer Batteries: Synergistic LiF Interphase Formation and Mechanical Reinforcement for Dendrite Suppression Lingyi Kong Zhenjiang Du Beili Pang Can Cui Jianguang Feng Hongzhou Dong Lingyan Wang Liyan Yu Lifeng Dong Journal of Applied Polymer Science ABSTRACT Poly(vinylidene fluoride) (PVDF)‐based polymer electrolytes are promising candidates for lithium‐ion batteries due to their high ionic conductivity, wide electrochemical stability window, and ease of processing. However, PVDF chain scission during cycling often leads to battery failure. This study introduces a straightforward strategy for modifying PVDF using potassium oxalate (K 2 C 2 O 4 ). The resulting composite gel polymer electrolyte (CGPEK‐X) facilitates the pre‐formation of LiF, which enhances lithium‐ion conductivity and promotes uniform lithium deposition. Moreover, the improved mechanical integrity of the composite effectively suppresses lithium dendrite growth. When integrated into LiFePO 4 /Li cells, the optimized K 2 C 2 O 4 ‐doped system demonstrates stable cycling over 200 cycles at room temperature, achieving a discharge capacity of 120.3 mAh g −1 at 1°C. This work presents a novel approach to engineering PVDF‐based electrolytes with balanced mechanical and electrochemical properties, offering valuable insights for the development of high‐performance lithium‐polymer batteries. 10.1002/app.70710 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/app.70710 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_app_70710 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2026 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | K 2 C 2 O 4 ‐Modified PVDF Electrolytes for Lithium‐Polymer Batteries: Synergistic LiF Interphase Formation and Mechanical Reinforcement for Dendrite Suppression Lingyi Kong Zhenjiang Du Beili Pang Can Cui Jianguang Feng Hongzhou Dong Lingyan Wang Liyan Yu Lifeng Dong Journal of Applied Polymer Science K 2 C 2 O 4 ‐Modified PVDF Electrolytes for Lithium‐Polymer Batteries: Synergistic LiF Interphase Formation and Mechanical Reinforcement for Dendrite Suppression Lingyi Kong Zhenjiang Du Beili Pang Can Cui Jianguang Feng Hongzhou Dong Lingyan Wang Liyan Yu Lifeng Dong Journal of Applied Polymer Science ABSTRACT Poly(vinylidene fluoride) (PVDF)‐based polymer electrolytes are promising candidates for lithium‐ion batteries due to their high ionic conductivity, wide electrochemical stability window, and ease of processing. However, PVDF chain scission during cycling often leads to battery failure. This study introduces a straightforward strategy for modifying PVDF using potassium oxalate (K 2 C 2 O 4 ). The resulting composite gel polymer electrolyte (CGPEK‐X) facilitates the pre‐formation of LiF, which enhances lithium‐ion conductivity and promotes uniform lithium deposition. Moreover, the improved mechanical integrity of the composite effectively suppresses lithium dendrite growth. When integrated into LiFePO 4 /Li cells, the optimized K 2 C 2 O 4 ‐doped system demonstrates stable cycling over 200 cycles at room temperature, achieving a discharge capacity of 120.3 mAh g −1 at 1°C. This work presents a novel approach to engineering PVDF‐based electrolytes with balanced mechanical and electrochemical properties, offering valuable insights for the development of high‐performance lithium‐polymer batteries. 10.1002/app.70710 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | K 2 C 2 O 4 ‐Modified PVDF Electrolytes for Lithium‐Polymer Batteries: Synergistic LiF Interphase Formation and Mechanical Reinforcement for Dendrite Suppression |
| topic | Journal of Applied Polymer Science |
| url | https://onlinelibrary.wiley.com/doi/10.1002/app.70710 |