Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2024, Vol. 37 ›› Issue (2): 66-72.DOI: 10.12422/j.issn.1006-396X.2024.02.009

• Alternative Fuels and New Materials • Previous Articles     Next Articles

Preparation of Anionic Conductive Membrane for Fuel Cells Based on Crown Ether Modified Deacetylated Chitin

Haige NIAN1(), Xuying ZHENG2, Hui GAO3, Hai XIN4, Jilin WANG5()   

  1. 1.School of Environmental and Safety Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China
    2.Kanglong Huacheng (Beijing) New Drug Technology Co. ,Ltd. ,Beijing 100176,China
    3.Fushun Yikesi New Material Co. ,Ltd. ,Fushun Liaoning 113000,China
    4.Fushun Mining Group Co. ,Ltd. ,Shale Refinery,Fushun Liaoning 113115,China
    5.School of Petroleum and Chemical Technology,Liaoning Petrochemical University,Fushun Liaoning 113001,China
  • Received:2023-09-28 Revised:2023-11-07 Published:2024-04-25 Online:2024-04-24
  • Contact: Jilin WANG

基于冠醚改性脱乙酰甲壳素制备燃料电池用阴离子导电膜

年海歌1(), 郑旭莹2, 高慧3, 辛海4, 王吉林5()   

  1. 1.辽宁石油化工大学 环境与安全工程学院,辽宁 抚顺 113001
    2.康龙化成(北京)新药技术有限公司,北京 100176
    3.抚顺伊科思新材料有限公司,辽宁 抚顺 113000
    4.抚顺矿业集团有限责任公司页岩炼油厂,辽宁 抚顺 113115
    5.辽宁石油化工大学 石油化工学院,辽宁 抚顺 113001
  • 通讯作者: 王吉林
  • 作者简介:年海歌(2002⁃),女,从事聚合物电解质材料方面的研究;E⁃mail:1353402272@qq.com
  • 基金资助:
    国家大学生创新创业训练计划项目(202210148020);辽宁省应用基础研究计划项目(2023JH2/101300217)

Abstract:

Under alkaline conditions,the aldehyde group is introduced into dibenzo-18-crown-6 (DB18C6) with the help of chloroform (CHCl3) to prepare dimethyl dibenzo-18-crown-6 (DDB18C6).Then,using DDB18C6 and soluble deacetylated chitin (CTS) as raw materials,Schiff reaction was used to synthesize a grafted crown ether CTS membrane with an increasing mass fraction of small molecule crown ethers,which was named C a-CTS membrane (a=m(DDB18C6)/m(C a -CTS membrane)).The C a -CTS membrane is ion exchanged in alkali solution.The C a -CTS membrane absorbs K+ through the oxygen hole structure,and then the C a -CTSK membrane is prepared.Eeach stage the sample membrane was subjected to structural characterization and performance testing.The results show that with the increase of the crown ether grafting degree,the thermal stability of CTS can be improved;when a=0.20,the grafting degree of C0.20-CTSK membrane can reach 43.91%,the water absorption rate can reach 168.6%,the IEC value is 1.38 mmol/g. At a temperature of 70 ℃,the conductivity of C0.20-CTSK membrane can reach 46.8 mS/cm; the introduction of grafting of crown ether improves the alkali resistance stability of this series of membranes. After the C a -CTSK series membranes are soaked in 6 mol/L KOH solution for 480 hours, the conductivity decreases only 4.0%.

Key words: Chitosan, Dimethyldibenzo-18-crown-6, Anionic conductive film, Fuel cell, Crown ether

摘要:

在碱性条件下,借助三氯甲烷(CHCl3)将醛基引入二苯并-18-冠-6(DB18C6)中,制得二甲酰基二苯并-18-冠-6(DDB18C6);以DDB18C6与可溶性脱乙酰甲壳素(CTS)为原料,利用Schiff反应合成了小分子冠醚质量分数递增的接枝冠醚CTS膜,将其命名为C a -CTS膜(a=m(DDB18C6)/m(C a-CTS膜));将C a -CTS膜于碱液中进行离子交换,C a -CTS膜通过氧空穴结构吸附K+,进而制得C a -CTSK膜;对各阶段的样品膜进行了结构表征和性能测试。结果表明,随着冠醚接枝度的增加,CTS的热稳定性得到改善;当a=0.20时,C0.20-CTSK膜的接枝度可达43.91%,吸水率可达168.6%,IEC为1.38 mmol/g;在温度为70 ℃的条件下,C0.20-CTSK膜的电导率可达46.8 mS/cm;冠醚的接枝引入改善了该系列膜的耐碱稳定性;C a -CTSK系列膜在6 mol/L的 KOH溶液中浸泡480 h,电导率降低幅度仅为4.0%。

关键词: 脱乙酰甲壳素, 二甲酰基二苯并-18-冠-6, 阴离子导电膜, 燃料电池, 冠醚

CLC Number: 

Cite this article

Haige NIAN, Xuying ZHENG, Hui GAO, Hai XIN, Jilin WANG. Preparation of Anionic Conductive Membrane for Fuel Cells Based on Crown Ether Modified Deacetylated Chitin[J]. Journal of Petrochemical Universities, 2024, 37(2): 66-72.

年海歌, 郑旭莹, 高慧, 辛海, 王吉林. 基于冠醚改性脱乙酰甲壳素制备燃料电池用阴离子导电膜[J]. 石油化工高等学校学报, 2024, 37(2): 66-72.