基于Pd的双金属电催化剂用于0.1MKOH溶液中的氧化反应
Georgios Bampos1, Symeon Bebelis1
1Department of Chemical Engineering, University of Patras, GR-26504 Patras, Greece.
Nanomaterials (Basel, Switzerland)
|March 27, 2024
概括
该研究发现,一种特定的-电催化剂 (7.5%重量%Pd-2.5%重量%Ni/C) 显示出增强的氧化反应 (HOR) 活性. 这种性能与电子效果和材料相关.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
背景情况:
- 开发高效的电催化剂对于基于的能源技术至关重要.
- (Pd) 是氧化反应 (HOR) 的有希望的催化剂,但它的活性可以通过合金调节.
研究的目的:
- 为了合成和评估一系列基于的电催化剂,支持碳 (C) 与不同的二次金属 (M) 进行HOR活性.
- 为了确定最佳的组成和制备条件,以提高HOR性能.
主要方法:
- 碳黑支持的Pd-M/C电催化剂 (M:Ag,Ca,Co,Cu,Fe,Ni,Ru,Sn,Zn) 的合成,使用湿浸.
- 在300°C降低催化剂.
- 用薄膜旋转盘电极技术在0.1M KOH中对氧化反应 (HOR) 活性进行电化学评估.
主要成果:
- 7.5%重量%Pd-2.5%重量%Ni/C电催化剂在测试的基于Pd的催化剂中显示出最高的HOR活性.
- 这种Pd-Ni催化剂的性能优于其他具有不同比例和降温温度的Pd-Ni催化剂.
- 7.5%重量Pd-2.5%重量Ni/C的活性低于参考10%重量Pt/C的催化剂.
结论:
- 将添加到中显著增强了HOR活性,这归因于电子效应和Ni的氧性性质.
- 在特定条件下制备的优化Pd-Ni/C电催化剂显示出改善氧化催化剂的潜力.
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