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细菌纤维素/聚吡咯导电复合膜制备与探讨

作者：郭琳，邓龙芝，余杰，潘家乐，朱雄伟

单位：武汉工程大学环境生态与生物工程学院，武汉 430200

关键词：细菌纤维素膜；聚吡咯；孔隙率；渗流理论

DOI号：

分类号： TQ3117

出版年,卷(期):页码： 2024,44(2):118-124

摘要：

超级电容器是一种新型的储能装置，由载体、高分子导电材料、氧化剂等组成，细菌纤维素膜韧性好、孔隙率优良，现已作为一种载体材料。本研究选用葡糖醋杆菌在特定培养基培养生长形成细菌纤维素膜，提取加工后与聚吡咯（PPy）和氧化剂原位聚合，以 FeCl3作为氧化剂使不同浓度的吡咯聚合附着在其表面形成超级电容器，通过傅里叶红外光谱分析，再根据渗流理论探讨膜的电导率与孔隙率的变化规律，最后测出含电量的变化。研究结果表明：孔隙率与电导率并不成正比关系，孔隙率在25%~30%内，其电导率最大，0.01 mol/L浓度聚吡咯的孔隙率最大为60.05%，电导率却最小（1×10-6 S/m），0.06 mol/L浓度聚吡咯孔隙率为23.04%，却获得了最大的电导率（2.6×10-1 S/m）。

Supercapacitor is a new type of energy storage device, consisting of carrier, polymer conductive material, oxidant, etc. In terms of carrier, bacterial cellulose film with good toughness and excellent porosity has been used as a substrate material. In this study, Bacillus glucoaceticus was selected to grow in specific medium to form bacterial cellulose material film, extracted and processed with polypyrrole (PPy) and oxidant in situ polymerization, FeCl3 was used as oxidant The membrane was then extracted and processed with polypyrrole (PPy) and oxidant in situ, and FeCl3 was used as the oxidant to polymerise and attach different concentrations of pyrrole to its surface to form a supercapacitor. The results show that the porosity and conductivity are not proportional to each other, with the maximum conductivity within 25%-30% porosity, the maximum porosity of 60.05% for 0.01 mol/L concentration polypyrrole but the minimum conductivity (1×10-6S/m), and the maximum conductivity obtained for 0.06 mol/L concentration polypyrrole with 23.04% porosity (2.6×10 -1S/m).

基金项目：

作者简介：

郭琳（1999-），女，山西长治人，硕士研究生，研究方向工业微生物， Email：1748466470@qq.com

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