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用于中温水电解的高质子传导性和耐高温聚氯乙烯-聚4-乙烯基吡啶膜

High Proton-Conductive and Temperature-Tolerant PVC-P4VP Membranes towards Medium-Temperature Water Electrolysis.

作者信息

Yin Yichen, Ying Yiming, Liu Guojuan, Chen Huiling, Fan Jingrui, Li Zhi, Wang Chuhao, Guo Zhuangyan, Zeng Gaofeng

机构信息

CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.

School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Membranes (Basel). 2022 Mar 25;12(4):363. doi: 10.3390/membranes12040363.

DOI:10.3390/membranes12040363
PMID:35448332
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9027779/
Abstract

Water electrolysis (WE) is a highly promising approach to producing clean hydrogen. Medium-temperature WE (100-350 °C) can improve the energy efficiency and utilize the low-grade water vapor. Therefore, a high-temperature proton-conductive membrane is desirable to realize the medium-temperature WE. Here, we present a polyvinyl chloride (PVC)-poly(4vinylpyridine) (P4VP) hybrid membrane by a simple cross-linking of PVC and P4VP. The pyridine groups of P4VP promote the loading rate of phosphoric acid, which delivers the proton conductivity of the PVC-P4VP membrane. The optimized PVC-P4VP membrane with a 1:2 content ratio offers the maximum proton conductivity of 4.3 × 10 S cm at 180 °C and a reliable conductivity stability in 200 h at 160 °C. The PVC-P4VP membrane electrode is covered by an IrO anode, and a Pt/C cathode delivers not only the high water electrolytic reactivity at 100-180 °C but also the stable WE stability at 180 °C.

摘要

水电解（WE）是一种极具前景的制取清洁氢气的方法。中温水电解（100 - 350°C）可以提高能源效率并利用低品位水蒸气。因此，需要一种高温质子传导膜来实现中温水电解。在此，我们通过聚氯乙烯（PVC）和聚4-乙烯基吡啶（P4VP）的简单交联制备了一种PVC - P4VP复合膜。P4VP的吡啶基团提高了磷酸的负载率，从而赋予了PVC - P4VP膜质子传导性。含量比为1:2的优化PVC - P4VP膜在180°C时具有4.3×10 S cm的最大质子传导率，并且在160°C下200小时内具有可靠的传导稳定性。PVC - P4VP膜电极由IrO阳极覆盖，Pt/C阴极不仅在100 - 180°C下具有高水电解反应活性，而且在180°C下具有稳定的水电解稳定性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/0b05fd37c6e5/membranes-12-00363-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/dce009bc9f71/membranes-12-00363-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/4b10acb31d7a/membranes-12-00363-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/c91261933a38/membranes-12-00363-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/04221d10b16a/membranes-12-00363-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/7f2cec84df5a/membranes-12-00363-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/0b05fd37c6e5/membranes-12-00363-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/dce009bc9f71/membranes-12-00363-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/4b10acb31d7a/membranes-12-00363-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/c91261933a38/membranes-12-00363-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/04221d10b16a/membranes-12-00363-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/7f2cec84df5a/membranes-12-00363-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9801/9027779/0b05fd37c6e5/membranes-12-00363-g006.jpg

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