An Fe-MOF nanosheet array with superior activity towards the alkaline oxygen evolution reaction

作者：Zhang, Xiaoxue; Liu, Qin; Shi, Xifeng; Asiri, Abdullah M.^*; Sun, Xuping^*

来源：Inorganic Chemistry Frontiers, 2018, 5(6): 1405-1408.

DOI：10.1039/c8qi00163d

• LAYERED DOUBLE HYDROXIDE
• METAL-ORGANIC FRAMEWORKS
• WATER OXIDATION CATALYST
• NEUTRAL AQUEOUS-SOLUTION
• NANOWIRE ARRAY
• EFFICIENT ELECTROCATALYST
• ENHANCED ACTIVITY
• THIN-FILMS
• PERFORMANCE
• ELECTRODE

It is highly desired to develop high-performance non-noble-metal electrocatalysts for the oxygen evolution reaction (OER) in alkaline solutions. In this communication, we report the hydrothermal synthesis of an Fe-MOF nanosheet array on nickel foam (Fe-MOF/NF) using aqueous Fe3+ and terephthalic acid as precursors. Such an Fe-MOF/NF shows superior electrocatalytic performance towards the OER in 1.0 M KOH with a low overpotential of 240 mV at 50 mA cm(-2) and a small Tafel slope of 72 mV dec(-1). Notably, this catalyst also exhibits high long-term electrochemical durability to maintain its activity for at least 30 h. Moreover, this catalyst electrode achieves a high turnover frequency of 0.74 mol O-2 per s at an overpotential of 300 mV.

• 出版日期2018-6
• 单位山东师范大学; 西华师范大学