A water-soluble dinuclear copper electrocatalyst, [Cu(oxpn)Cu(OH)(2)] for both water reduction and oxidation

作者：Fang, Ting; Fu, Ling Zhi; Zhou, Ling Ling; Zhan, Shu Zhong^*

来源：Electrochimica Acta, 2015, 161: 388-394.

DOI：10.1016/j.electacta.2015.02.101

• Copper(II) complex
• molecular electrocatalyst
• water reduction
• water oxidation
• hydrogen evolution

The reaction of N,N'- bis(3-aminopropyl) oxamido ligand (oxpn) and Cu(OH)(2) affords a dinuclear copper (II) complex, Cu(oxpn)Cu(OH)(2) 1, a molecular electrocatalyst for both water reduction and oxidation. Water oxidation occurs at an overpotential of 0.289 V with a turnover frequency (TOF) of similar to 6.7 s(-1). Water reduction occurs with a TOF of 1383 moles of hydrogen per mole of catalyst per hour at an overpotential of 0.689 V (pH 7.0). Sustained water reduction catalysis occurs at glassy carbon (GC) to give H-2 over a 72 h electrolysis period with 97.4% Faradaic yield and no observable decomposition of the catalyst.

• 出版日期2015-4-10
• 单位华南理工大学