Advanced Functional Materials·· 8 小时前精选AI 评分58
Cu2P2O7/PVDF-HFP 复合隔膜借晶格负热膨胀实现热机械自补偿
Lattice‐Level Negative Thermal Expansion Enables Thermomechanical Self‐Compensation in High‐Rate Lithium Batteries
AI 导读
研究团队将 Cu2P2O7 通过 PDA 介导界面与 PVDF-HFP 基体复合，利用 Cu2P2O7 的各向异性晶格收缩抵消基体的热致变形，制得在 200°C 下仍保持尺寸稳定的隔膜。
推荐理由
作者把晶格负热膨胀引入隔膜设计，用 Cu2P2O7 的热收缩抵消 PVDF-HFP 的热膨胀，读者可看到一条从材料机理到电池循环数据的完整验证链。
创新点
把晶格级负热膨胀作为隔膜的主动热机械补偿机制，而非被动耐热改性，并用 PDA 界面把无机填料的热收缩传递到 PVDF-HFP 基体上。
来源：Advanced Functional Materials · doi.org
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