发表机构
University of Oxford; University of St Andrews; Robert Gordon University（牛津大学; 圣安德鲁斯大学; 罗伯特戈登大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究开发含二硫键的生物聚酰胺，掺入HKUST-1 MOF填料制备自发泡多孔摩擦电膜，提升了结构机械稳健性与耐湿性，实现稳定的摩擦电输出。
AI 中文摘要
多孔摩擦电材料在提升摩擦纳米发电机性能方面具有巨大潜力，但其实际应用受限于结构不稳定性和湿度诱导的性能退化。本研究开发了一种含二硫键的生物衍生可持续聚酰胺，无需外部模板即可自发形成多孔电介质；将包含HKUST-1晶体的亲水性MOF填料掺入多孔基体中，以增强膜结构并调控湿度影响。机械表征表明，HKUST-1可抑制孔隙塌陷，提升重复变形下的结构稳健性；应力-应变行为分析揭示，孔隙稳定性对实现稳定摩擦电输出有关键作用。此外，HKUST-1通过将水分子限制在其框架内，缓解了湿度诱导的电荷耗散，相比纯多孔体系，在相对湿度升高时摩擦电输出稳定性提升，性能退化减少。本研究展示了一种整合自发泡多孔结构、可持续聚合物设计和功能填料增强的策略，用于构建机械稳健且环境稳定的摩擦电系统。
英文摘要
Porous triboelectric materials offer significant potential for enhancing the performance of triboelectric nanogenerators, yet their practical application is limited by structural instability and humidity-induced performance degradation. In this work, a bio-derived, sustainable polyamide containing disulfide linkages was developed to enable spontaneous formation of a porous dielectric without external templating. Hydrophilic MOF fillers comprising HKUST-1 crystals are incorporated within the porous matrix to reinforce the membrane structure and regulate moisture effects. Mechanical characterization demonstrates that HKUST-1 suppresses pore collapse and improves structural robustness under repeated deformation, while analysis of stress-strain behaviour reveals the critical role of pore stability in achieving stable triboelectric output. In addition, HKUST-1 mitigates humidity-induced charge dissipation by confining water molecules within its framework, giving enhanced triboelectric output stability and reduced performance degradation under increasing relative humidity compared to the neat porous system. This work demonstrates a strategy that integrates self-foamed porous structures, sustainable polymer design, and functional filler reinforcement to engineer mechanically robust and environmentally stable triboelectric systems.
Comments24 pages, 5 figures, Supplementary Information
