解锁RuCo合金比率对性气生产的影响
Xing Ji1, Zhenzhen Wang1, Zefeng Fang1
1Institute of Advanced Magnetic Materials, College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China.
这项研究开发了一种逐步火方法,以制造- (RuCo) 合金电催化剂. 与相比,RuCo-0.6/NC催化剂在电催化中表现出优越的性能和耐用性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 设计用于催化的- (RuCo) 合金需要了解组件相互作用和合金比率.
- 精确的结构设计对于优化RuCo合金电催化剂至关重要.
研究的目的:
- 开发一种有效的逐步回火方法,用于制造可调节的Ru:Co比率的RuCo合金电催化剂.
- 研究不同Ru:Co比率对RuCo合金的催化性能和结构性能的影响.
主要方法:
- 对于RuCo合金合成的逐步回火方法.
- 合金结构和组合物的表征.
- 在1M KOH中进行电催化性能测试.
- 密度函数理论 (DFT) 的计算.
主要成果:
- 循序渐进的回火使RuCo合金的受控形成成为可能,该合金的比率为1:1, 1:2, 1:8.
- RuCo-0.6/NC表现出极好的催化活性和耐久性,表现优于商业Pt/C.
- 1: 1合金比显示了Ru和Co氧化状态的转换,增强了催化性能.
- DFT的计算表明,快速的H2O解离和中度的H吸附是RuCo活动的关键因素.
结论:
- 阶段性回火方法对于制造具有控制组合的RuCo合金电催化剂是有效的.
- RuCo合金,特别是RuCo-0.6/NC,显示出作为高性能电催化剂的巨大潜力.
- 通过DFT了解电子结构和反应机制,有助于设计优质电催化剂.
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