Effect of Redox Switch, Coupling, and Continuous Polarization on the Anti-Corrosion Properties of PEDOT Film in NaCl Solution
文献类型：期刊论文
| 作者 | Udowo, Victor Malachy1,2; Yan, Maocheng2; Liu, Fuchun2,3; Han, En-Hou2,3 |
| 刊名 | COATINGS
 |
| 出版日期 | 2023-05-17 |
| 卷号 | 13期号:5页码:19 |
| 关键词 | conducting polymer coating stainless steel electrochemical interaction degradation |
| DOI | 10.3390/coatings13050944 |
| 通讯作者 | Yan, Maocheng(yanmc@imr.ac.cn) ; Liu, Fuchun(fliu@imr.ac.cn) |
| 英文摘要 | Conjugated poly(3,4-ethylenedioxythiophene) (PEDOT) film was electrochemically synthesized on stainless steel (SS). Redox interactions between the PEDOT film and the SS substrate were examined in 3.5 wt.% NaCl aqueous solution with the aid of electrochemical and spectroscopic analyses. The results show that the PEDOT film exhibited a barrier effect and mediated the oxygen reduction reaction, thus hindering ion diffusion to the steel substrate. Localized electrochemical impedance spectroscopy (LEIS) of the scratched area on the polymer film shows that PEDOT healed the defect by coupling with redox reactions on the steel surface to prevent charge localization and concentration. The electroactivity of the polymer film declined when PEDOT was polarized at potentials >-0.7 V. Prolonged exposure of the PEDOT film to dissolved oxygen in NaCl solution resulted in the polymer's over-oxidation (degradation), evidenced by the formation of a carbonyl group in the spectroscopic result. The degradation of PEDOT was attributed to chain scissoring due to hydroxide ion attacks on the polymer chain. |
| 资助项目 | National Natural Science Foundation of China[52071320] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000997010300001 |
| 出版者 | MDPI |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178045]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yan, Maocheng; Liu, Fuchun |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 3.Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China |
| 推荐引用方式 GB/T 7714 | Udowo, Victor Malachy,Yan, Maocheng,Liu, Fuchun,et al. Effect of Redox Switch, Coupling, and Continuous Polarization on the Anti-Corrosion Properties of PEDOT Film in NaCl Solution[J]. COATINGS,2023,13(5):19. |
| APA | Udowo, Victor Malachy,Yan, Maocheng,Liu, Fuchun,&Han, En-Hou.(2023).Effect of Redox Switch, Coupling, and Continuous Polarization on the Anti-Corrosion Properties of PEDOT Film in NaCl Solution.COATINGS,13(5),19. |
| MLA | Udowo, Victor Malachy,et al."Effect of Redox Switch, Coupling, and Continuous Polarization on the Anti-Corrosion Properties of PEDOT Film in NaCl Solution".COATINGS 13.5(2023):19. |
入库方式： OAI收割
来源：金属研究所
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