构建FeNiPt@C三功能催化剂通过高旋转诱导水氧化活动为Zn-Air电池和离子交换膜水电解剂
Yangdan Pan1, Yuwen Li2, Adeela Nairan1
1Institute of Functional Porous Materials, The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 14, 2024
概括
这项研究介绍了一种新的纳米花样碳封装FeNiPt纳米合金催化剂,用于高效的演变 (HER),氧演变 (OER) 和氧减少 (ORR) 反应,推进可持续能源设备.
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:
- 开发具有成本效益的三功能催化剂对于先进的能源设备至关重要.
- 优化活跃地点和将催化剂整合到凝聚系统中仍然是一个挑战.
研究的目的:
- 合成和表征一种新的纳米花样碳封装FeNiPt纳米合金催化剂 (FeNiPt@C NFs).
- 评估FeNiPt@C NFs对演化反应 (HER),氧演化反应 (OER) 和氧减少反应 (ORR) 的三功能催化性能.
- 为了证明催化剂在Zn-空气电池和水电解器等实际能源设备中的有效性.
主要方法:
- 通过霍夫曼型金属有机框架修改,碳化和化合成FeNiPt@C NF.
- 催化剂结构的表征,包括添加碳封装和相分离的FeNiPt合金与表面氧化.
- 对HER,ORR和OER活动的电化学评估,以及Zn-空气电池和离子交换膜水电解器的性能测试.
主要成果:
- 该FeNiPt@C NFs催化剂表现出极好的三功能活性:HER (-25 mV在10 mA cm−2),ORR (0.93 V半波潜力) 和OER (294 mV在10 mA cm−2).
- 增强的水氧化活性归因于Fe的高旋转状态.
- 用FeNiPt@C NF组装的设备显示出高性能:Zn-空气电池 (168 mW cm−2) 和水电解剂 (698 mA cm−2) 在1.85V).
结论:
- FeNiPt@C NFs催化剂表现出卓越的三功能催化性能.
- 催化剂的结构和高旋转铁状态有助于其增强的活性.
- 这项工作为开发可持续能源系统的先进催化剂提供了途径.
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