Self-healing polyelectrolyte multilayered coating for anticorrosion on carbon paper

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• 作者：Yanxi Zhu^a ; ^c ; Xinmin You^b ; Jiaoyu Ren^a ; Zhigang Zhao^b ; Liqin Ge^a ; ^{lqge@seu.edu.cn}
• 关键词：Self-healing ; Layer-by-layer ; Carbon paper ; Anticorrosion
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 May 2017
• 年：2017
• 卷：493
• 期：Complete
• 页码：342-348
• 全文大小：2192 K
• 卷排序：493

文摘

Ideally, if the corrosion resistance coating on carbon paper (CP) can be endowed with the self-healing property, the service life and the reliability of the carbon paper will be greatly increased as the gas diffusion layer. In this paper, different cycles of s branched poly (ethyleneimine) (bPEI) and poly (acrylic acid) (PAA) were modified on the surface of the carbon paper via layer-by-layer (LbL) self-assembly technology. The prepared polyelectrolyte multilayered coatings can not only protect the carbon fiber from corrosion, but also take advantages of the surrounding water to quickly repair themselves after damaged. The effects of the assembly cycles on morphology, resistance, air permeability and the contact angle of carbon papers were investigated, then the differences of the carbon papers in electrolysis process were explored. The results reveal that all the prepared coatings can protect carbon papers from corrosion, while when the assembly cycles was 10, the coatings are most efficient.