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无形Ni_xS_y催化剂的电解和优化,用于气进化反应在性环境中

Cheng Lyu¹, Adeline Loh¹, Mikey Jones¹

¹Renewable Energy Group, Department of Engineering, Faculty of Environment, Science and Economy, University of Exeter, Penryn Campus, Penryn, TR10 9FE, UK.

Chemistry (Weinheim an der Bergstrasse, Germany)

|October 11, 2024

概括

开发了一种新的,低成本的-硫 (Ni_xS_y) 电催化剂,用于生产绿色气. 这种可持续的催化剂在离子交换膜水电解器中表现出色的性能和稳定性.

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
绿色能源绿色能源

背景情况:

阳离子交换膜 (AEM) 水电解器是可持续生产的关键.
开发具有成本效益和高效的电催化剂对于AEM技术至关重要.
基于-硫 (Ni_xS_y) 的催化剂为演变反应提供了潜在的潜力.

研究的目的:

为了合成和优化低成本,无形的Ni_xS_y电催化剂用于演化反应 (HER).
评估优化的Ni_xS_y催化剂的催化性能和长期稳定性.
为了评估Ni_xS_y催化剂在AEM全水电解器电池中的性能.

主要方法:

使用简单的电沉积方法从修改后的瓦茨浴中制备电催化剂.
电化学表征包括旋转盘电极 (RDE) 测量.
长期稳定性测试和全细胞电解实验.

主要成果:

优化的无形Ni_xS_y催化剂在1MKOH中显示出较低的超电位 (41mV在10mA/cm2) .
卓越的催化活性,在333 K.的Tafel斜率为67.9 mV/dec.
在24小时内保持稳定的性能,在293K和333K时均有最小的超电位增加.
全细胞测试显示1小时后,电池电压为1.88V,500mA/cm2.

结论:

开发的Ni_xS_y催化剂是AEM水电解剂中HER的一种有希望,具有成本效益和可持续的材料.
电沉积方法允许简单的合成和催化剂的优化.
催化剂具有高活性和耐久性,对于高效的绿色生产至关重要.

关键词:

无形材料是一种无形材料.阳离子交换膜 (AEM) 水电解器阴极电极电位定位 (cathodic electrodeposition) 是一种电极电位定位.演变反应 (HER) 是一种演变反应.硫化是什么意思?硫化是什么意思

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