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梯度吸附能量策略释放了超长稳定性和高效的电催化氨合成从酸盐超过COP/Cu₃P

Hui Xu¹, Jinghuan Peng¹, Peiquan Li¹

¹Department School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Angewandte Chemie (International ed. in English)

|November 13, 2025

概括

这项研究介绍了一种新的CoP/Cu3P复合纳米管电极,用于高效的电催化酸盐降解为氨. 催化剂实现了高氨生产率和稳定性,为氨合成和废水处理提供了双重解决方案.

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:

用电催化剂将酸盐减少为氨 (NRA) 对于可持续的氨合成和废水处理至关重要.
挑战包括多步骤的质子-电子转移和调节中间吸附能,限制反应效率.

研究的目的:

开发一种高活性和稳定的电催化剂,用于将酸盐还原为氨.
研究一个渐变吸附能量策略,以提高催化性能.

主要方法:

在铜泡上制造一个自我支的CoP/Cu3P复合纳米管阵列电极 (CoP/Cu3P-CF),通过in situ生长和化.
利用Cu和Co双位点的协同效应,使用P作为电子转移桥.
采用凯尔文探针力显微镜和机械学研究的现场表征.

主要成果:

实现了 1.59 mmol h-1 的氨生产率,在 -0.3 V 与 RHE 的 Faradaic 效率为 96.35% .
经过150小时的稳定运行,由于强烈的界面相互作用,性能降低最小.
证实了广泛的吸附能量分布,支持多站点协同催化.

结论:

CoP/Cu3P-CF电极通过梯度吸附能量策略有效地增强吸附和脱附过程.
这项工作为设计先进的电催化剂提供了洞察力,以有效地将酸盐减少为氨.

关键词:

电触媒溶解是一种电触媒.梯度吸附能量梯度吸附能量电合成NH3的电合成减少酸盐的使用协同催化剂的协同催化

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