纤维素溶解-填充法制备纸基/离子导体及湿气产电性能  

Cellulose Dissolution-Filling Method for Preparation of Paper-Based/Ion-Conductor and Moisture-Electricity Generation Performance

作　　者：吴培琳 王艳 付时雨 刘德桃 WU Peilin;WANG Yan;FU Shiyu;LIU Detao(South China University of Technology School of Light Industry and Engineering State Key Laboratory of Pulp and Paper Engineering,Guangzhou 510640,China)

机构地区：[1]华南理工大学轻工科学与工程学院制浆造纸工程国家重点实验室,广东广州510640

出　　处：《造纸科学与技术》2024年第3期11-16,共6页Paper Science & Technology

基　　金：广东省自然科学基金项目(2024A1515011166、2022A1515010910)。

摘　　要：通过常温DMAc/LiCl全溶解纤维素制备纤维素溶液,将其真空填充多孔性纸张,经溶剂再生、冷冻干燥工艺制备多孔纸基网状模板,通过浸渍LiCl水溶液和冷冻盐析构筑纸基/LiCl-再生纤维素离子导体,探讨了制备工艺与外界条件对材料结构和性能的影响。结果表明:8.0 wt%LiCl盐电解质水溶液,可在多孔性纸张内形成致密的纳米再生纤维素/LiCl网状结构,显著提高吸湿能力(ΔW=0.31 g)及离子电导率(24.6 mS/cm),进而提升湿气产电性能(开路电压为0.67 V,短路电流为135.0μA)。Cellulose solutions were prepared by completely dissolving cellulose at room temperature using a DMAc/LiCl solvent system.These solutions were then vacuum-infused into porous paper substrates to fabricate a network template via solvent regeneration and freeze-drying techniques.Subsequently,the paper-based/LiCl-regenerated cellulose ion conductors were constructed through impregnation with LiCl aqueous solution and cryogenic salt precipitation,exploring the effects of the fabrication process and external conditions on the material’s structure and performance.Results indicated that an 8.0 wt%LiCl electrolyte solution could form a dense network of nano-regenerated cellulose/LiCl within the porous paper,significantly enhancing moisture absorption(ΔW=0.31 g)and ionic conductivity(24.6 mS/cm),thereby improving the performance in moisture-driven electricity generation(open-circuit voltage of 0.67 V and short-circuit current of 135.0μA).

关 键 词：纤维素 纸基离子导体 湿气发电 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]