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二元和纳米结构的NiMn矿化物作为尿素氧化反应的高效电催化剂

Tzu Ho Wu¹, Yong Shan Liu¹, Chung Ting Hong¹

¹Department of Chemical and Materials Engineering, National Yunlin University of Science and Technology, 123 University Road, Section 3, Douliou, Yunlin 64002, Taiwan.

Journal of colloid and interface science

|October 2, 2023

概括

为尿素氧化反应 (UOR) 开发高效的电催化剂是可持续生产的关键. 这项研究系统地研究矿化物,确定一种NiMn基材料作为UOR的高度活性催化剂.

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
环境科学环境科学

背景情况:

尿素电解为生产和废水处理提供了一个可持续的途径.
高性能电催化剂至关重要,但目前缺乏有效的尿素氧化反应 (UOR).
矿化物由于其独特的结构和组成特性而具有前景.

研究的目的:

系统地研究各种矿化物化合物的UOR性能.
为了确定在尿素电解中增强电催化活性的最佳成分.
了解设计高效的UOR电催化剂的结构-活动关系.

主要方法:

一系列ABF3矿化物样本的合成 (A=K;B=Ni/Mn,Ni/Co,Co/Mn).
电化学特征的UOR性能,包括超电位,Tafel斜率,和周转频率.
对二元与单元催化剂的比较分析.

主要成果:

KNMF41 (KNiMnF3与Ni/Mn比率为4:1) 显示出优越的UOR活性.
在1.43V下,KNMF41实现了100 mA cm-2在40 mV dec-1的低Tafel斜率下.
由于尿素吸附增强,二元NiMn矿化物表现出比NiCo和CoMn对应物更高的活性.

结论:

基于NiMn的矿化物是尿素氧化的高效电催化剂.
有针对性的合成策略可以为可持续能源应用提供高效的电催化剂.
这项工作为设计用于尿素电解的先进材料提供了途径.

关键词:

二元过渡金属二元过渡金属电催化剂是一种电催化剂.电化学性尿素氧化过程中的尿素.佩罗夫斯基特化物是一种化物.

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