| 李娟,庞小兰.纤维素滤纸基陶瓷复合隔膜的可控制备及其在锂离子电池中的应用研究[J].中国造纸,2025,(8):71-77 |
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| 纤维素滤纸基陶瓷复合隔膜的可控制备及其在锂离子电池中的应用研究 |
| Controlled Fabrication of Cellulose Filter Paper-based Ceramic Composite Separators and Their Application in Lithium-Ion Batteries |
| 收稿日期：2025-04-26 修订日期：2025-07-02 |
| DOI：10.11980/j.issn.0254-508X.2025.08.009 |
| 关键词: 复合隔膜 纤维素滤纸 锂离子电池 电化学性能 |
| Key Words:composite separators cellulose filter paper lithium-ion batteries electrochemical performance |
| 基金项目:2024年广东省普通高校特色创新类项目（编号：188）；广东理工学院2025年校级科研平台和项目（项目编号：48）。 |
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| 摘要:本研究通过原位湿法涂覆技术在纤维素滤纸基材上构建了壳聚糖/聚乙烯醇/钛酸钡多功能涂层，制备了纤维素滤纸基陶瓷复合隔膜。通过调控陶瓷填料分散与聚合物交联网络，成功实现了复合隔膜三维多孔结构的可控构筑。结果表明，当壳聚糖质量分数为0.25%，聚乙烯醇质量分数为1.0%，钛酸钡质量分数为0.1%时，所制纤维素滤纸基复合隔膜展现出优异的综合性能：200 ℃下热稳定性得到改善且尺寸无收缩，全电池在0.5 C下的首圈放电比容量高达118.69 mAh/g，不锈钢/复合隔膜/半电池的电荷转移电阻仅为6.87 Ω。 |
| Abstract:In this study， a cellulose filter paper-based ceramic composite separator was fabricated by constructing a chitosan/polyvinyl alcohol/barium titanate multifunctional coating on low-cost paper substrates through an in-situ wet-coating technique. By regulating the dispersion of ceramic fillers and the polymer cross-linking network， the controllable construction of a three-dimensional porous structure for the composite separator was successfully achieved.The results showed that when the mass fractions of chitosan， polyvinyl alcohol， and barium titanate were 0.25%， 1.0%， and 0.1%， respectively， the as-prepared composite separator exhibits exceptional comprehensive performance： enhanced thermal stability at 200 ℃ with no dimensional shrinkage， a first-cycle discharge specific capacity of up to 118.69 mAh/g at 0.5 C in full-cell configuration， and an ultra-low charge transfer resistance of merely 6.87 Ω for the stainless steel/composite separator/half-cell. |
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