通过镍（0）催化的碳-碳偶联聚合制备用于燃料电池的磺酰亚胺酸功能化膜

Sulfonyl Imide Acid-Functionalized Membranes via Ni (0) Catalyzed Carbon-Carbon Coupling Polymerization for Fuel Cells.

作者信息

Sutradhar Sabuj Chandra, Yoon Sujin, Ryu Taewook, Jin Lei, Zhang Wei, Jang Hohyoun, Kim Whangi

机构信息

Department of Applied Chemistry, Konkuk University, Chungju 27478, Korea.

Department of Liberal Art, Konkuk University, Chungju 27478, Korea.

出版信息

Membranes (Basel). 2021 Jan 12;11(1):49. doi: 10.3390/membranes11010049.

DOI:10.3390/membranes11010049

PMID:33445796

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7828272/

Abstract

Polymer membranes, having improved conductivity with enhanced thermal and chemical stability, are desirable for proton exchange membranes fuel cell application. Hence, poly(benzophenone)s membranes (SI-PBP) containing super gas-phase acidic sulfonyl imide groups have been prepared from 2,5-dichlorobenzophenone (DCBP) monomer by C-C coupling polymerization using Ni (0) catalyst. The entirely aromatic C-C coupled polymer backbones of the SI-PBP membranes provide exceptional dimensional stability with rational ion exchange capacity (IEC) from 1.85 to 2.30 mS/cm. The as-synthesized SI-PBP membranes provide enhanced proton conductivity (107.07 mS/cm) compared to Nafion 211 (104.5 mS/cm). The notable thermal and chemical stability of the SI-PBP membranes have been assessed by the thermogravimetric analysis (TGA) and Fenton's test, respectively. The well distinct surface morphology of the SI-PBP membranes has been confirmed by the atomic force microscopy (AFM). These results of SI-PBP membranes comply with all the requirements for fuel cell applications.

摘要

具有改善的导电性以及增强的热稳定性和化学稳定性的聚合物膜，对于质子交换膜燃料电池应用而言是理想的。因此，含有超气相酸性磺酰亚胺基团的聚（二苯甲酮）膜（SI-PBP）已通过使用Ni(0)催化剂由2,5-二氯二苯甲酮（DCBP）单体通过C-C偶联聚合制备而成。SI-PBP膜完全芳香族的C-C偶联聚合物主链提供了出色的尺寸稳定性，其合理的离子交换容量（IEC）为1.85至2.30 mS/cm。与Nafion 211（104.5 mS/cm）相比，合成后的SI-PBP膜具有更高的质子传导率（107.07 mS/cm）。SI-PBP膜显著的热稳定性和化学稳定性已分别通过热重分析（TGA）和芬顿试验进行了评估。SI-PBP膜清晰独特的表面形态已通过原子力显微镜（AFM）得到证实。SI-PBP膜的这些结果符合燃料电池应用的所有要求。