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在离子交换膜水电解器中构建一个具有Mn丰富表面的NiMnS电极用于生产

Wenwu Guo¹, Hyunki Kim¹, Seokjin Hong¹

¹School of Chemical Engineering and Material Science, Chung-Ang University, Seoul 06974, Republic of Korea. shahn@cau.ac.kr.

Dalton transactions (Cambridge, England : 2003)

|September 23, 2023

概括

在Ti纸上的一种新型NiMnS催化剂在离子交换膜水电解器 (AEMWEs) 中有效地产生. 这个电极显示出优异的演化反应 (HER) 活性,这对于清洁的燃料生产至关重要.

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:

有效的演变电极对于使用离子交换膜水电解剂 (AEMWEs) 生产至关重要.
开发具有成本效益和高性能的催化剂对于推进AEMWE技术至关重要.

研究的目的:

制造一种具有增强演化反应 (HER) 活性的新型NiMnS催化剂.
研究NiMnS催化剂的结构和形态特性,以提高电化学性能.
在半细胞和单细胞AEMWE配置中评估催化剂的性能.

主要方法:

富含Mn的NiMnS催化剂在Ti纸上自支持的一步电解.
催化剂形态,结构和表面性能的表征.
电化学测试包括半细胞HER测量和单细胞AEMWE性能评估.

主要成果:

NiMnS/Ti电极表现出独特的空洞形态和晶格扭曲结构,这是由于Mn兴奋剂.
在半细胞测试中,证明了优异的HER活性,在10mA cm-2时具有65mV的超电位,明显低于NiS/Ti (102mV).
在AEMWE单电池中,NiMnS/Ti阴极在2.0V时达到0.9A cm-2的高电流密度.

结论:

富含Mn的NiMnS/Ti电极是一种高效的电催化剂,用于性介质中的进化.
独特的纳米结构和兴奋剂效应有助于增强 HER 活动和 AEMWE 性能.
这种催化剂显示出通过AEMWEs实际生产的巨大希望.

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