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基于NiMo的Ce-doped多相/硫化物异构结构,用于高电流密度的高效光增强的整体水分裂

Yikun Cheng¹, Aojie Yuan¹, Yangrui Zhang¹

¹School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, China.

Journal of colloid and interface science

|January 19, 2024

概括

这项研究引入了新的-合- (NiMo) 基/硫化物异构结构,用于增强整体水分 (OWS). 优化的10%Ce-NiMo-PS@NF催化剂实现了和氧演化反应的高效率和稳定性.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
可再生能源可再生能源是可再生能源.

背景情况:

基于- (NiMo) 的电催化剂显示出对整体水分 (OWS) 的承诺.
对于OWS,在高电流密度下改善反应动力学和催化剂稳定性仍然存在挑战.
电催化剂的合理设计对于高效和持久的水分裂至关重要.

研究的目的:

设计和合成基于NiMo的新型/硫化物异构电催化剂,具有不同的 (Ce) 兴奋剂比率.
调查Ce兴奋剂对异构结构的电子结构,电子传输和光吸收特性的影响.
为了评估整体水分的光增强电催化性能.

主要方法:

在尼克尔泡 (NF) 上合成基于NiMo的/硫化物异构结构,使用受控的Ce兴奋剂 (5%,10%,15%).
合成材料的表征,以了解结构和电子特性.
电化学测试用于演变反应 (HER),氧演变反应 (OER) 和光照照明下的整体水分裂.

主要成果:

10%的Ce-NiMo-PS@NF催化剂表现出优越的光增强电催化活性.
实现了 HER (η1000 = 250 mV) 和 OER (η1000 = 242 mV) 的超电位,其总体分水电压低 (E1000 = 1.864 V).
在合系统中显示出高太阳能到 (STH) 效率18.68%.

结论:

Ce 兴奋剂有效地改变了电子环境,并增强了基于 NiMo 的异构结构中的光吸收.
10%的Ce-NiMo-PS@NF催化剂代表了一种高效和稳定的材料,用于光增强的整体水分解.
这项工作为设计先进的电催化剂和利用光能进行水分裂提供了新的策略.

关键词:

Ce 兴奋剂兴奋剂多相异构结构的多相异构结构照片增强的增强效果太阳能到气的过程硫化物/化物硫化物/化物

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