一种高效的二氧化集成合金化复合物作为电催化剂,用于全pH演变反应和整体水分裂
Dongxiao Li1, Zhimin Guo1, Ruihuan Zhao1
1School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, PR China.
Journal of colloid and interface science
|October 12, 2023
概括
一种新型的二氧化结合合金化 (CeO2/NiCoP) 催化剂证明了全pH和氧演变反应的高效率. 这种先进的电催化剂显示了对高效的整体水和海水电解的承诺.
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
- 催化剂是一种催化剂.
背景情况:
- 过渡金属化物 (TMP) 是有前途的电催化剂,因为它们具有可调节的特性.
- 在所有pH水平上,为演变反应 (HER) 和氧演变反应 (OER) 开发高效且持久的TMP仍然是一个挑战.
研究的目的:
- 在泡上制造一种新的CeO2/NiCoP催化剂,用于高效的水分裂.
- 研究CeO2/NiCoP催化剂对HER和OER的催化活性,耐久性和机制.
主要方法:
- 使用热水合成和化反应制造了CeO2/NiCoP催化剂.
- 进行了电化学测量,以评估各种pH溶液中的HER和OER性能.
- 进行密度函数理论 (DFT) 计算,以了解反应机制.
主要成果:
- 对于所有pH HER (48-72 mV) 和OER (231 mV @ 10 mA cm-2) 的CeO2/NiCoP表现出较低的超电位.
- 总体而言,水分裂只需要1.46V (性) 和1.41V (海水) 在10mA cm-2.0下.
- 催化剂显示出出色的稳定性,耐腐蚀性,丰富的异质接口,以及超/超空恐惧表面.
结论:
- CeO2/NiCoP是一种高效且耐用的电催化剂,用于水和海水的电解.
- 催化剂的性能归因于其独特的结构,丰富的活性位点和有利的反应中间能量.
- 这项工作为设计用于清洁能源应用的先进催化剂提供了洞察力.
更多相关视频
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
3.6K
05:41Photochemical Oxidative Growth of Iridium Oxide Nanoparticles on CdSe@CdS Nanorods
Published on: February 11, 2016
9.6K
相关概念视频
Thermal and Photochemical Electrocyclic Reactions: Overview
2.4K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.4K
Catalysis
27.0K
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
27.0K
Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
3.3K
Catalytic hydrogenation of alkenes is a transition-metal catalyzed reduction of the double bond using molecular hydrogen to give alkanes. The mode of hydrogen addition follows syn stereochemistry.
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
3.3K
