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在环境条件下,Ni-Co双金属化物催化剂用于电催化氨合成

Dongnan Zhao^1,2, Zhixian Mao^2,3, Shengbo Zhang^2,3

¹School of Energy Materials and Chemical Engineering, Hefei University Hefei 230601 China.

|April 4, 2025

概括

这项研究引入了一种新的Ni-Co双金属化物催化剂 (NiCoP),通过电催化酸盐还原来实现可持续的氨合成. 尼科普表现出卓越的性能,为能源密集的哈伯-博什工艺提供了一个环保的替代方案.

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
可持续化学可持续化学

背景情况:

氨 (NH3) 合成在很大程度上依赖能源密集的哈伯-博什工艺,对二氧化碳排放有很大贡献.
电催化降解反应 (NitRR) 为环境条件下的NH3生产提供了一个可持续和环保的替代方案.

研究的目的:

为了合成和评估一个Ni-Co双金属化物催化剂 (NiCoP),以实现高效的电催化酸盐降解.
研究化物催化剂中Ni和Co的协同作用,以增强氨合成.

主要方法:

热水合成后进行高温化,以产生NiCoP催化剂.
电化学表征包括循环电压测量和时电压测量.
现场微分电化学质谱 (DEMS) 用于识别反应中间体.

主要成果:

与单金属化物相比,NiCoP催化剂表现出了显著的NitrRR性能.
在 -1.2 V (与 RHE 相比) 实现了高法拉达效率 (FE) 91.3 ± 4.4%的NH3生产.
在-1.4V (vs. RHE) 达到5553.4±400.8μg h-1 cm-2的最大NH3产率.

结论:

尼科普显示出作为一种高效的电催化剂,通过酸盐还原来合成氨的巨大潜力.
在Ni-Co双金属化物中的协同效应对其增强的催化活性至关重要.
这种方法为可持续和环保的氨生产提供了一个有希望的途径.

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