transference number

简明释义

迁移数

英英释义

例句

1.The transference number is crucial for understanding ion migration in electrolytes.

了解电解质中离子迁移的关键在于迁移数。

2.The transference number can be calculated using the Nernst equation.

可以使用能斯特方程计算迁移数。

3.Researchers measured the transference number of sodium ions in a new battery design.

研究人员测量了新电池设计中钠离子的迁移数。

4.In fuel cells, optimizing the transference number is essential for efficiency.

在燃料电池中，优化迁移数对提高效率至关重要。

5.A high transference number indicates better ionic conductivity in solid-state electrolytes.

高迁移数表示固态电解质中更好的离子导电性。

作文

The concept of transference number is crucial in the field of electrochemistry, particularly when studying ionic conductors and electrolytes. In simple terms, the transference number refers to the fraction of the total current carried by a particular ion in a solution or an electrolyte. This parameter is essential for understanding how different ions contribute to electrical conductivity in various materials. For instance, when an electric field is applied across an electrolyte, the ions migrate towards the electrodes, and the transference number helps quantify the efficiency of this migration for each type of ion.To illustrate the importance of the transference number, consider a common scenario in batteries. In a typical lithium-ion battery, lithium ions move from the anode to the cathode during discharge. The transference number of lithium ions in the electrolyte directly affects the battery's performance, including its capacity and charge/discharge rates. A high transference number for lithium ions means that a larger portion of the current is carried by these ions, leading to better efficiency and faster charging times. Conversely, if the transference number for undesirable ions (such as sodium or potassium) is high, it can lead to reduced battery performance and longevity.Furthermore, the transference number is also significant in the context of fuel cells. In fuel cell technology, protons or hydroxide ions are the primary charge carriers, depending on the type of fuel cell. Understanding the transference number of these ions allows researchers to optimize the design of fuel cells for maximum efficiency. For example, increasing the transference number of protons in a proton exchange membrane fuel cell can lead to enhanced power output and improved overall efficiency.In addition to applications in batteries and fuel cells, the transference number plays a vital role in various industrial processes, such as electroplating and electrolysis. In these processes, controlling the migration of ions is essential for achieving desired outcomes, such as uniform coating thickness or efficient separation of materials. By measuring and adjusting the transference number, engineers can fine-tune these processes to improve productivity and product quality.In conclusion, the transference number is a fundamental concept in electrochemistry that has far-reaching implications across various technologies. Its ability to indicate how effectively different ions contribute to electrical current makes it a valuable parameter in the development of batteries, fuel cells, and other electrochemical systems. As research continues to advance in this field, a deeper understanding of the transference number will undoubtedly lead to innovations that enhance energy storage and conversion technologies, ultimately contributing to a more sustainable future.

“转移数”这一概念在电化学领域至关重要，特别是在研究离子导体和电解质时。简单来说，“转移数”指的是在溶液或电解质中，由特定离子携带的总电流的分数。这个参数对于理解不同离子在各种材料中的电导率贡献至关重要。例如，当电场施加到电解质上时，离子会向电极迁移，而“转移数”有助于量化每种类型离子这种迁移的效率。为了说明“转移数”的重要性，考虑一个常见的情境：在电池中。在典型的锂离子电池中，锂离子在放电过程中从阳极移动到阴极。电解质中锂离子的“转移数”直接影响电池的性能，包括其容量和充放电速率。锂离子的“转移数”高意味着更大部分的电流由这些离子携带，从而提高效率和更快的充电时间。相反，如果不希望的离子（如钠或钾）的“转移数”较高，则可能导致电池性能和寿命下降。此外，“转移数”在燃料电池的背景下也具有重要意义。在燃料电池技术中，质子或氢氧根离子是主要的电荷载体，具体取决于燃料电池的类型。了解这些离子的“转移数”使研究人员能够优化燃料电池的设计，以实现最大效率。例如，在质子交换膜燃料电池中，提高质子的“转移数”可以增强功率输出并改善整体效率。除了在电池和燃料电池中的应用外，“转移数”在各种工业过程中也发挥着重要作用，如电镀和电解。在这些过程中，控制离子的迁移对于实现所需结果（如均匀涂层厚度或高效分离材料）至关重要。通过测量和调整“转移数”，工程师可以微调这些过程，以提高生产力和产品质量。总之，“转移数”是电化学中的一个基本概念，对各种技术具有深远的影响。它能够指示不同离子对电流的贡献效率，使其成为开发电池、燃料电池和其他电化学系统的重要参数。随着该领域研究的不断推进，对“转移数”的更深入理解无疑将推动能源储存和转换技术的创新，最终为可持续未来做出贡献。