电沉积法制备 Ni-Co-B 纳米颗粒修饰碳毡双功能催化剂用于尿素电解。
Ni-Co-B nanoparticle decorated carbon felt by electroless plating as a bi-functional catalyst for urea electrolysis.
机构信息
Department of Chemical and Biological Engineering, Gachon University, Gyeonggi-Do, Republic of Korea.
Department of Chemical Engineering, Hanyang University (Erica Campus), Ansan-Si, Gyeonggi Do, Republic of Korea.
出版信息
J Colloid Interface Sci. 2021 Nov;601:317-325. doi: 10.1016/j.jcis.2021.05.078. Epub 2021 May 18.
A free-standing catalyst electrode for urea electrolysis was synthesized by electroless plating of NiCoB alloy onto a flexible carbon felt. The synthesized NiCoB@C catalyst exhibited porous and partially amorphous metallic structure depending on its composition, as analysed by XRD, XPS, and TEM; thus, NiCoB@C catalyst showed a high catalytic activity for urea oxidation reaction as well as hydrogen evolution reaction. The required cell voltage in the electrolysis cell with NiCoB@C as anode and cathode was as low as 1.34 V for the current densities 10 mA cm. Similar performance of the urea electrolysis for H production using 0.33 M urea and a fresh urine in 1 M KOH was observed. The result indicated that NiCoB could be incorporated on to carbon felt by electroless plating, and it could be used as free-standing bifunctional electrodes for urea electrolysis using urea as well as urine.
通过在柔性碳纤维毡上电沉积 NiCoB 合金，合成了用于尿素电解的独立催化剂电极。XRD、XPS 和 TEM 分析表明，所合成的 NiCoB@C 催化剂具有多孔和部分非晶态金属结构，因此，NiCoB@C 催化剂对尿素氧化反应和析氢反应表现出高催化活性。以 NiCoB@C 作为阳极和阴极的电解槽中，电流密度为 10 mA cm 时，所需的槽电压低至 1.34 V。在 1 M KOH 中使用 0.33 M 尿素和新鲜尿液进行 H 生产的尿素电解具有相似的性能。结果表明，NiCoB 可以通过化学镀沉积在碳纤维毡上，并且可以用作独立的双功能电极，用于以尿素和尿液为原料的尿素电解。
Zotero 插件