electric double layer

简明释义

双电层

英英释义

例句

1.The stability of emulsions can be explained by the presence of an electric double layer 电双层 at the interface.

乳液的稳定性可以通过界面上存在的电双层 电双层来解释。

2.Research shows that modifying the electric double layer 电双层 can enhance battery performance.

研究表明，改进电双层 电双层可以提高电池性能。

3.In electrochemistry, the electric double layer 电双层 plays a crucial role in charge separation.

在电化学中，电双层 电双层在电荷分离中起着关键作用。

4.The electric double layer 电双层 affects ion transport in membranes, which is important for desalination processes.

电双层 电双层影响膜中的离子运输，这对海水淡化过程至关重要。

5.The behavior of colloidal particles is significantly influenced by the formation of an electric double layer 电双层 around them.

胶体颗粒的行为受到它们周围形成的电双层 电双层的显著影响。

作文

The concept of an electric double layer is fundamental in the field of electrochemistry and plays a crucial role in various applications, such as batteries, capacitors, and electrochemical sensors. To understand this concept, we must first delve into the structure and behavior of charged surfaces in contact with an electrolyte solution.When a solid surface becomes charged, it creates an electric field that influences the distribution of ions in the surrounding liquid. This interaction leads to the formation of two distinct layers: the inner layer, which consists of ions that are adsorbed directly onto the charged surface, and the outer layer, where ions are more loosely associated with the surface. Together, these layers constitute the electric double layer (电双层).The inner layer is often referred to as the Stern layer, named after the scientist Otto Stern, who contributed significantly to our understanding of electrochemical interfaces. This layer is characterized by a high concentration of counter-ions, which are attracted to the charged surface due to electrostatic forces. The thickness of this layer depends on several factors, including the nature of the surface, the ionic strength of the solution, and the type of ions present.Beyond the Stern layer lies the diffuse layer, which contains ions that are not strongly bound to the surface but are still influenced by the electric field created by the charged surface. The concentration of ions in this region decreases with increasing distance from the surface, leading to a gradual transition from the highly ordered arrangement of the Stern layer to a more random distribution of ions in the bulk solution.The electric double layer is crucial for understanding various phenomena, such as capacitance, electrokinetic effects, and the stability of colloidal systems. For example, in a capacitor, the ability to store charge is directly related to the characteristics of the electric double layer. A thicker double layer can store more charge, which is essential for the performance of supercapacitors.Moreover, the electric double layer also plays a significant role in electrochemical reactions. When a redox reaction occurs at an electrode, the movement of ions within the electric double layer facilitates the transfer of electrons between the electrode and the electrolyte. This process is vital for the operation of batteries and fuel cells, where efficient ion and electron transport is necessary for optimal performance.In conclusion, the electric double layer (电双层) is a critical concept in electrochemistry that describes the behavior of charged surfaces in contact with electrolytes. Its understanding is essential for advancements in energy storage, sensor technology, and many other fields. As research continues to evolve, the implications of the electric double layer will undoubtedly lead to innovations that enhance our technological capabilities and deepen our understanding of electrochemical processes.