Page 34 - 《精细化工》2023年第2期

第 40 卷第 2 期 精 细 化 工 Vol.40, No.2
20 23 年 2 月 FINE CHEMICALS Feb. 2023

功能材料
聚吲哚/聚丙烯腈聚合物基电解质膜的制备及性能

1
2*
1
2
1
赵凯乐 ，于 影 ，赵章风 ，左春柽 ，张浩波
（1. 浙江工业大学 机械与自动控制学院，浙江 杭州 310018；2. 嘉兴学院 信息科学与工程学院，浙江
嘉兴 314000）
摘要：为代替纤维素纸（C-P）基电解质膜用于铝空气电池，利用静电纺丝技术制备了聚吲哚/聚丙烯腈（PIN/PAN）
聚合物基电解质膜。采用 SEM 和 FTIR 对 PIN/PAN 纤维表面形貌及化学组成进行了分析。通过电化学工作站和
电池测试系统分析了 PIN 含量对 PIN/PAN 聚合物基电解质膜离子电导率、离子扩散系数及固态铝空气电池放电
性能的影响。结果表明，PIN/PAN 纤维的孔隙率、吸液率、断裂伸长率与加入的 PIN 含量有关，同时对碱性溶
液具有良好的吸附能力及机械性能，其中，PIN 含量（以 PAN 溶液的质量为基准，其中，溶剂为 N,N-二甲基甲
酰胺，下同）为 4%的 PIN/PAN 纤维（记为 4% PIN/PAN 纤维）的吸液率达 496%、孔隙率为 87.1%、断裂伸长
率为 8.7%，分别是 C-P 的 3.2、1.1、3.8 倍。基于 PIN/PAN 纤维制备的 PIN/PAN 聚合物基电解质膜可有效提升
2
固态铝空气电池性能。其中，4% PIN/PAN 聚合物基电解质膜在 3、5、7 mA/cm 电流密度下，放电时长比 C-P
–4
2
–8
铝空气电池分别提升约 18%、32%、38%，离子电导率为 6.7×10 S/cm，离子扩散系数为 2.69×10 cm /S。
关键词：静电纺丝；PIN/PAN 聚合物基电解质膜；离子电导率；吸液率；固态铝空气电池；功能材料
中图分类号：TB383.2；TM911.41 文献标识码：A 文章编号：1003-5214 (2023) 02-0256-07

Preparation and properties of polyindole/polyacrylonitrile
polymer-based electrolyte films

2*
1
1
1
2
ZHAO Kaile , YU Ying , ZHAO Zhangfeng , ZUO Chuncheng , ZHANG Haobo
（1. School of Mechanical Engineering and Automation, Zhejiang University of Technology, Hangzhou 310018, Zhejiang,
China; 2. College of Information Science and Engineering, Jiaxing University, Jiaxing 314000, Zhejiang, China）
Abstract: Polyindole/polyacrylonitrile (PIN/PAN) polymer-based electrolyte films were prepared by
electrospinning technology and applied to solid-state aluminum air battery to replace cellulose paper (C-P)
based electrolyte film. The surface morphology and chemical composition of PIN/PAN fibers were then
analyzed by SEM and FTIR. And the effects of PIN content on the ionic conductivity, ionic diffusion
coefficient and solid-state aluminum-air battery discharge of PIN/PAN polymer electrolytes were
investigated via electrochemical workstation and battery test system. The results showed that the PIN
content affected the porosity, liquid absorption rate and elongation at break of PIN/PAN fibers. At the same
time, it showed good adsorption capacity and mechanical properties for alkaline solution. The liquid
absorption rate, porosity and elongation at break of the PIN/PAN fiber with 4% PIN content (based on the
mass of PAN solution, N,N-dimethyl-formamidethe as solvent, the same below) was 496%, 87.1% and
8.7%, which were 3.2, 1.1 and 3.8 times that of cellulose paper, respectively. The PIN/PAN polymer-based
electrolyte films prepared from PIN/PAN fibers could effectively improve the performance of solid
aluminum air battery. The discharge duration of 4% PIN/PAN polymer electrolyte film was about 18%,
2
32% and 38% higher than those of C-P aluminum-air battery at current densities of 3, 5 and 7 mA/cm ,
–8
2
–4
respectively. The ionic conductivity was 6.7×10 S/cm, and the ionic diffusion coefficient was 2.69×10 cm /S.
Key words: electrospinning; PIN/PAN polymer electrolyte films; ionic conductivity; liquid absorption rate;
solid aluminum air battery; functional materials

收稿日期：2022-05-25; 定用日期：2022-07-25; DOI: 10.13550/j.jxhg.20220499
基金项目：浙江省自然科学基金（LQ20E040007，LGG21E050021）
作者简介：赵凯乐（1998—），男，硕士生，E-mail：1250398558@qq.com。联系人：于 影（1988—），女，副教授，E-mail：yingyu@
zjxu.edu.cn。