在双支持的Pt原子上进行质子提供-转换-溢出级联编程,以实现稳健的生产
Mansheng Liao1,2, Yuan Zhang1, Qianyi Lin1
1College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|February 10, 2026
概括
本研究介绍了单原子催化剂 (SAC) 的多米诺型质子策略,以提高演化反应 (HER) 的效率. 新的Pt-NC1@TiN NWs平台显著增强了酸性HER中的催化活性和稳定性.
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:
- 质子工程是提高进化反应 (HER) 中单原子催化剂 (SAC) 的关键.
- 在多个反应步骤中管理质子转移比单步调节更有效但更具挑战性.
- 开发先进的催化剂需要新的策略,以有效地管理质子.
研究的目的:
- 为酸性HER中的Pt SACs提出并研究多米诺型质子供应-转换-溢出编程.
- 为协调的质子管理设计一个独特的催化剂平台 (Pt-NC1@TiN NWs).
- 通过级质子效应来证明 HER 的增强性能.
主要方法:
- 制造超薄的多孔气合碳封装TiN纳米线与尖端 (Pt-NC1@TiN NWs).
- 利用实验和理论分析来研究质子动力学和催化机制.
- 在酸性HER和质子交换膜水电解器 (PEMWE) 条件下评估了催化剂性能.
主要成果:
- Pt-NC1@TiN NWs平台展示了多米诺型质子级联效应,增强了 Pt-N2 位点的界面质子可访问性和内在活动.
- 在 -100 mV 达到 153.5 A/mgPt 的优越 Pt 质量活性,显著超过商业 Pt/C.
- 表现出极好的稳定性,在1.75V时达到2A/cm2,在PEMWE中保持1A/cm21200小时.
结论:
- 开发的多米诺型质子策略通过编排多步骤的质子管理,有效地提高了HER的性能.
- Pt-NC1@TiN NWs显示出作为HER和水电解的高度活性和稳定的电催化剂的巨大潜力.
- 利用多步骤的多米诺进程是设计下一代催化剂的一个有希望的途径.
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