Fabrication of a hierarchical NiTe@NiFe-LDH core-shell array for high-efficiency alkaline seawater oxidation

• Published in: iScience Vol. 27; no. 1; p. 108736
• Main Authors: Ju, Xuexuan, He, Xun, Sun, Yuntong, Cai, Zhengwei, Sun, Shengjun, Yao, Yongchao, Li, Zixiao, Li, Jun, Wang, Yan, Ren, Yuchun, Ying, Binwu, Luo, Yongsong, Zheng, Dongdong, Liu, Qian, Xie, Lisi, Li, Tingshuai, Sun, Xuping, Tang, Bo
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 19-01-2024; Elsevier
• Subjects: Energy materials; Materials chemistry; Materials chemistry; Energy materials
• ISSN: 2589-0042; 2589-0042
• DOI: 10.1016/j.isci.2023.108736

Herein, a hierarchical NiTe@NiFe-LDH core-shell array on Ni foam (NiTe@NiFe-LDH/NF) demonstrates its effectiveness for oxygen evolution reaction (OER) in alkaline seawater electrolyte. This NiTe@NiFe-LDH/NF array showcases remarkably low overpotentials of 277 mV and 359 mV for achieving current densities of 100 and 500 mA cm−2, respectively. Also, it shows a low Tafel slope of 68.66 mV dec−1. Notably, the electrocatalyst maintains robust stability over continuous electrolysis for at least 50 h at 100 mA cm−2. The remarkable performance and hierarchical structure advantages of NiTe@NiFe-LDH/NF offer innovative insights for designing efficient seawater oxidation electrocatalysts.
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•A hierarchical NiTe@NiFe-LDH/NF acts as a superb electrocatalyst for seawater oxidation•It demands low overpotentials of 277 mV for achieving a current density of 100 mA cm−2•It maintains robust stability over continuous electrolysis for 50 h at 100 mA cm−2
Materials chemistry; Energy materials