Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China.
Vacuum Interconnected Nanotech Workstation, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China.
J Colloid Interface Sci. 2019 Apr 1;541:279-286. doi: 10.1016/j.jcis.2019.01.096. Epub 2019 Jan 23.
Urea electrolysis is regarded as an alternative energy-saving hydrogen production technique to replace the conventional water splitting method due to the predicted lower thermodynamic potential. Herein, we demonstrate a robust and mass-produced strategy to in-situ grow NiP/FeP nanohybrids on Ni foam (NiP/FeP/NF) as an advanced electrode for overall urea electrolysis via a 30 s manual shaking reaction of FeCl·6HO, K[Fe(CN)] and pre-treated NF, followed by a facile phosphorization treatment. The as-prepared NiP/FeP/NF electrode exhibits high activity for the HER at 115 mV and UOR at 1.36 V with the current density of 10 mA cm, and only a cell voltage of 1.47 V is required to deliver the current density of 10 mA cm. This work reveals a promising industrializable pathway to develop non-noble materials as bifunctional catalysts.
尿素电解被认为是一种替代节能的制氢技术，可以替代传统的水分解方法，因为其预测的热力学势更低。在此，我们通过 FeCl·6HO、K[Fe(CN)] 和预处理 NF 在 30 秒内的手动摇晃反应，再加上简单的磷化处理，展示了一种在 NF 上原位生长 NiP/FeP 纳米杂化物的稳健且大规模生产策略，将其作为整体尿素电解的先进电极。所制备的 NiP/FeP/NF 电极在 HER 中表现出高活性，在 115 mV 时的电流密度为 10 mA cm，在 UOR 中在 1.36 V 时的电流密度为 10 mA cm，仅需 1.47 V 的电池电压即可提供 10 mA cm 的电流密度。这项工作揭示了一种有前途的工业化途径，可以开发非贵金属材料作为双功能催化剂。
