标题: Effect of borate on the corrosion behaviors of Ni11Fe10Cu anode in molten carbonate

作者: Yang, ZS (Yang, Zhengshan); Du, KF (Du, Kaifa); Wang, PL (Wang, Peilin); Yin, HY (Yin, Huayi); Wang, DH (Wang, Dihua)

来源出版物: CORROSION SCIENCE 卷: 223 文献号: 111459 DOI: 10.1016/j.corsci.2023.111459 提前访问日期: AUG 2023 出版年: OCT 2023

摘要: Borates are an excellent electrolyte modifier for molten carbonate electrolyzers, which modulate electrode re-actions. However, the addition of borate in molten carbonate causes the degradation of the Ni11Fe10Cu anode. Herein, the corrosion behaviors of Ni, Fe, Cu and Ni11Fe10Cu electrodes in molten Na2CO3-K2CO3 with/without borates were studied at different temperatures, gas atmospheres, and pre-oxidation conditions. The in situ formed acidic borate at the anode accelerates the dissolution of the oxide scale, which can be suppressed by increasing temperature or decreasing CO2 partial pressure. The corrosion resistance of the Ni11Fe10Cu anode can be further enhanced by preparing a NiFe2O4 scale through electrochemical pre-oxidation.

作者关键词: Molten salts; Anodic behavior; Ni11Fe10Cu; Borate; High-temperature corrosion

地址: [Yang, Zhengshan; Du, Kaifa; Wang, Peilin; Yin, Huayi; Wang, Dihua] Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat, Base Sustainable Resource & Energy, Wuhan 430072, Peoples R China.

通讯作者地址: Wang, DH (通讯作者)，Wuhan Univ, Sch Resource & Environm Sci, Hubei Int Sci & Technol Cooperat, Base Sustainable Resource & Energy, Wuhan 430072, Peoples R China.

电子邮件地址: wangdh@whu.edu.cn

影响因子：8.3