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NiPtCo/Ti_0.7W_0.3O₂混合电催化剂的协同作用,以加速酸电氧化性能

Anh Quoc Khuong Nguyen¹, Tai Thien Huynh², Nam Nguyen Dang^3,4

¹Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, 70000, Vietnam.

Chemical communications (Cambridge, England)

|November 14, 2024

概括

在TiO2支上的一种新型NiPtCo合金催化剂在酸电氧化 (FAOR) 方面表现出卓越的性能. 与商业替代品相比,这种强大的催化剂提供了增强的活性和稳定性,为高效的燃料电池技术铺平了道路.

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
催化剂是一种催化剂.

背景情况:

酸电氧化反应 (FAOR) 对直接酸燃料电池至关重要.
开发高效和稳定的催化剂对于提高FAOR性能至关重要.
基于二氧化 (TiO2) 的支在催化剂设计中具有潜在的优势.

研究的目的:

制造一种强大的催化剂,用于增强酸电氧化 (FAOR).
调查NiPtCo合金和TiO2相关支持的协同效应.
为了评估催化剂的活性,稳定性和CO耐受性.

主要方法:

在TiO2相关材料 (Ti0.7W0.3O2) 上支持的NiPtCo合金催化剂的制造.
在FAOR中催化剂性能的电化学表征.
与商业Pt/C催化剂相比,催化剂的活性和稳定性的比较.

主要成果:

NiPtCo/Ti0.7W0.3O2催化剂表现出明显更高的FAOR质量活性 (0.45 A mgMetal-1) 和特定活性 (1.25 mA cm-2).
性能指标是3.75倍 (大规模活动) 和4.81倍 (特定活动) 优于商业Pt/C.
催化剂表现出良好的CO耐受性和长期电催化稳定性.

结论:

NiPtCo合金和TiO2相关支持的协同组合导致了高效的FAOR催化剂.
催化剂的增强性能归因于主要的脱路径和组件协同作用.
这一发展为酸燃料电池应用带来了有前途的进展.

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