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| Controlled Fabrication of Cellulose Filter Paper-based Ceramic Composite Separators and Their Application in Lithium-Ion Batteries |
| Received:April 26, 2025 Revised:July 02, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.08.009 |
| Key Words:composite separators cellulose filter paper lithium-ion batteries electrochemical performance |
| Fund Project: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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| 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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