标题: TiN diffusion barrier interlayer for enhancing the durability of Pt/Ti anodes for molten carbonate electrolysis

作者: Guo, L (Guo, Lei); Du, KF (Du, Kaifa); Tang, MY (Tang, Mengyi); Liu, MH (Liu, Minghao); Fang, ZY (Fang, Zhouyu); Li, WM (Li, Wenmiao); Chen, D (Chen, Di); Yin, HY (Yin, Huayi); Wang, DH (Wang, Dihua)

来源出版物: CORROSION SCIENCE 卷: 249 文献号: 112845 DOI: 10.1016/j.corsci.2025.112845 Published Date: 2025 JUN

摘要: The corrosion behavior and durability of platinum-coated titanium (Pt/Ti) anodes in molten carbonate electrolysis were systematically studied across a temperature range of 450-650 degrees C. The main cause of anode degradation was identified as rapid oxygen diffusion from the platinum coating to the titanium substrate, resulting in excessive passivation and the formation of a rutile TiO2 layer. This passivation process led to coating breakage and spallation. To mitigate these issues, a TiNx interlayer was introduced as an oxygen diffusion barrier to form a Pt/TiNx/Ti electrode. The TiNx layer significantly reduced substrate oxidation, thereby improving the anode's corrosion resistance and extending its service life under harsh electrolysis conditions. These findings provide crucial insights into the corrosion mechanism of Pt/Ti anodes and offer a promising strategy to enhance their performance and longevity in industrial molten carbonate electrolysis applications for CO2 reduction and green metallurgy.

作者关键词: Platinum coatings; Anodic behavior; Molten salts; High-temperature corrosion; Oxygen barrier

KeyWords Plus: INERT ANODE; OXIDATION BEHAVIOR; OXYGEN; CO2; ELECTROCATALYSIS; TRANSFORMATION; ELECTRODES; CONVERSION; DIOXIDE; CAPTURE

地址: [Guo, Lei; Du, Kaifa; Tang, Mengyi; Liu, Minghao; Fang, Zhouyu; Li, Wenmiao; Chen, Di; Yin, Huayi; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

[Guo, Lei; Du, Kaifa; Tang, Mengyi; Liu, Minghao; Fang, Zhouyu; Li, Wenmiao; Chen, Di; Yin, Huayi; Wang, Dihua] Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430072, Peoples R China.

通讯作者地址: Du, KF; Wang, DH (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Wuhan 430072, Peoples R China.

电子邮件地址: dukf@whu.edu.cn; wangdh@whu.edu.cn

影响因子：7.4