相关实验视频
Updated: Jul 4, 2025

10:00
Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
2.4K
性水电解用于生产绿色的生产
1Department of Heterogeneous Catalysis and Sustainable Energy, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm- Platz 1, 45470 Mülheim an der Ruhr, Germany.
Accounts of chemical research
|February 9, 2024
概括
通过性水电解生产绿色对于可持续的未来至关重要. 开发高效的电催化剂,特别是用于氧气演化反应,仍然是推动这项技术发展的关键.
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
- 可持续能源 可持续能源
背景情况:
- 全球能源部门正在向可持续性转变,被确定为未来的关键能源载体.
- 目前的气生产严重依赖化石燃料,需要向绿色气过渡.
- 性水电解为使用可再生能源的大规模绿色气生产提供了一个有希望的途径.
研究的目的:
- 提供有关经济和性水电解的原理的见解.
- 讨论进化反应 (HER) 和氧进化反应 (OER) 的电催化剂的挑战和进步.
- 突出了对开发基于过渡金属的电催化剂的贡献,专注于OER性能.
主要方法:
- 对性水电解的基本原则和工业发展的审查.
- 讨论HER和OER反应机制,包括吸附剂演化机制和晶格氧气机制.
- 分析基于过渡金属的电催化剂,特别是基于的材料,以提高OER.
主要成果:
- 氧进化反应 (OER) 在热力学和动力学上比进化反应 (HER) 更具有挑战性.
- 电催化剂的特性,包括表面相互作用和中间结合强度,对于催化性能至关重要.
- 基于的电催化剂通过操纵eg填充,相分离和缺陷结构,显示了增强OER活动的潜力.
结论:
- 先进的性水电解对于大规模的绿色生产至关重要.
- 进一步开发耐用和丰富的电催化剂,特别是OER,是必不可少的.
- 了解催化剂结构-活动关系和工作条件转换是优化性能的关键.
相关概念视频
Electrolysis
26.4K
In a galvanic cell, the electrical work is done by a redox system on its surroundings as electrons produced by the spontaneous redox reactions are transferred through an external circuit. Alternatively, an external circuit does work on a redox system by imposing a voltage sufficient to drive an otherwise nonspontaneous reaction in a process known as electrolysis. For instance, recharging a battery involves the use of an external power source to drive the spontaneous (discharge) cell reaction in...
26.4K
Batteries and Fuel Cells
27.4K
A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
27.4K
Acid-Catalyzed Hydration of Alkenes
14.1K
Alkenes react with water in the presence of an acid to form an alcohol. In the absence of acid, hydration of alkenes does not occur at a significant rate, and the acid is not consumed in the reaction. Therefore, alkene hydration is an acid-catalyzed reaction.
14.1K
Water: A Bronsted-Lowry Acid and Base
50.5K
The reaction between a Brønsted-Lowry acid and water is called acid ionization. For example, when hydrogen fluoride dissolves in water and ionizes, protons are transferred from hydrogen fluoride molecules to water molecules, yielding hydronium ions and fluoride ions:
50.5K
Standard Electrode Potentials
43.8K
On comparing the reactivity of silver and lead, it is observed that the two ionic species, Ag+ (aq) and Pb2+ (aq), show a difference in their redox reactivity towards copper: the silver ion undergoes spontaneous reduction, while the lead ion does not. This relative redox activity can be easily quantified in electrochemical cells by a property called cell potential. This property is commonly known as cell voltage in electrochemistry, and it is a measure of the energy which accompanies the charge...
43.8K
Aldehydes and Ketones with Water: Hydrate Formation
3.2K
An oxygen-based nucleophile, like water, can undergo addition reactions with aldehydes and ketones. The reaction leads to the formation of hydrates, also referred to as 1,1-diols or geminal diols.
The formation of hydrates is a reversible reaction. Hydrate formation is influenced by steric and electronic factors accompanying the alkyl substituents on the carbonyl group: The rate of hydrate formation increases with a decrease in the number of alkyl groups attached to the carbonyl carbon. Hence,...
The formation of hydrates is a reversible reaction. Hydrate formation is influenced by steric and electronic factors accompanying the alkyl substituents on the carbonyl group: The rate of hydrate formation increases with a decrease in the number of alkyl groups attached to the carbonyl carbon. Hence,...
3.2K

