SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (10): 2130-2138.DOI: 10.1016/j.cjche.2018.05.015

• Energy, Resources and Environmental Technology • 上一篇    下一篇

Poly (ether ether ketone ketone) based imidazolium as anion exchange membranes for alkaline fuel cells

Tiantian Li1, Xuemei Wu1, Wanting Chen1, Xiaoming Yan2, Dongxing Zhen1, Xue Gong1, Jiafei Liu2, Shaofeng Zhang1, Gaohong He1,2   

  1. 1 State Key Laboratory of Fine Chemicals, Research and Development Center of Membrane Science and Technology, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
    2 School of Petroleum and Chemical Engineering, State Key Laboratory of Fine Chemicals, Research and Development Center of Membrane Science and Technology, Dalian University of Technology, Panjin 124221, China
  • 收稿日期:2018-03-31 修回日期:2018-05-19 出版日期:2018-10-28 发布日期:2018-11-14
  • 通讯作者: Xiaoming Yan,E-mail addresses:yanxiaoming@dlut.edu.cn;Gaohong He,E-mail addresses:hgaohong@dlut.edu.cn
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21706023, 21476044, 21406031), the National Key Research and Development Program of China (2016YFB0101203), Education Department of Liaoning Province of China (LT2015007), Fundamental Research Funds for the Central Universities (DUT16TD19) and the Changjiang Scholars Program (T2012049).

Poly (ether ether ketone ketone) based imidazolium as anion exchange membranes for alkaline fuel cells

Tiantian Li1, Xuemei Wu1, Wanting Chen1, Xiaoming Yan2, Dongxing Zhen1, Xue Gong1, Jiafei Liu2, Shaofeng Zhang1, Gaohong He1,2   

  1. 1 State Key Laboratory of Fine Chemicals, Research and Development Center of Membrane Science and Technology, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
    2 School of Petroleum and Chemical Engineering, State Key Laboratory of Fine Chemicals, Research and Development Center of Membrane Science and Technology, Dalian University of Technology, Panjin 124221, China
  • Received:2018-03-31 Revised:2018-05-19 Online:2018-10-28 Published:2018-11-14
  • Contact: Xiaoming Yan,E-mail addresses:yanxiaoming@dlut.edu.cn;Gaohong He,E-mail addresses:hgaohong@dlut.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China (21706023, 21476044, 21406031), the National Key Research and Development Program of China (2016YFB0101203), Education Department of Liaoning Province of China (LT2015007), Fundamental Research Funds for the Central Universities (DUT16TD19) and the Changjiang Scholars Program (T2012049).

摘要: An imidazolium functionalized poly (ether ether ketone ketone) (PEEKK-DImOH) anion exchange membrane (AEM) readily soluble in certain low-boiling-point solvents (isopropanol) is prepared. The solubility results are consistent with the results of molecular dynamics simulations. By varying the chloromethylation reaction temperature or concentrated sulfuric acid concentration of PEEKK, the degrees of chloromethylation of PEEKK are changed from 54% to 92%, the corresponding PEEKK-DImOH AEMs with the ion exchange capacities (IECs) of 1.14-1.65 mmol·g-1. The PEEKK-DImOH 92% AEM shows high hydroxide conductivity (31 mS·cm-1), suitable water uptake (94%) and acceptable swelling ratio (39%) at 60℃. In addition, the PEEKK-DImOH AEMs possess good thermal and alkaline stability. The maximum power density (46.16 mW·cm-2) of fuel cell prepared with PEEKK-DImOH 92% AEM as exchange membrane and ionomer is much higher than that with commercial AHA membranes. All the above results indicate that the PEEKK used in this study is a promising AEM matrix material for alkaline fuel cells.

关键词: Poly (ether ether ketone ketone), Membranes, Solubility, Ionomer, 1, 2-Dimethylimidazole, Fuel cells

Abstract: An imidazolium functionalized poly (ether ether ketone ketone) (PEEKK-DImOH) anion exchange membrane (AEM) readily soluble in certain low-boiling-point solvents (isopropanol) is prepared. The solubility results are consistent with the results of molecular dynamics simulations. By varying the chloromethylation reaction temperature or concentrated sulfuric acid concentration of PEEKK, the degrees of chloromethylation of PEEKK are changed from 54% to 92%, the corresponding PEEKK-DImOH AEMs with the ion exchange capacities (IECs) of 1.14-1.65 mmol·g-1. The PEEKK-DImOH 92% AEM shows high hydroxide conductivity (31 mS·cm-1), suitable water uptake (94%) and acceptable swelling ratio (39%) at 60℃. In addition, the PEEKK-DImOH AEMs possess good thermal and alkaline stability. The maximum power density (46.16 mW·cm-2) of fuel cell prepared with PEEKK-DImOH 92% AEM as exchange membrane and ionomer is much higher than that with commercial AHA membranes. All the above results indicate that the PEEKK used in this study is a promising AEM matrix material for alkaline fuel cells.

Key words: Poly (ether ether ketone ketone), Membranes, Solubility, Ionomer, 1,2-Dimethylimidazole, Fuel cells