V2EX electrode potential

Electrode Potential

释义 Definition

电极电势:指在一定条件下,某一电极与其所接触的电解质溶液之间形成的电势差,用来描述该电极发生氧化/还原反应的倾向。在实际应用中常与标准电极电势(standard electrode potential)相关(在标准状态下测得,并相对于标准氢电极作比较)。

例句 Examples

The electrode potential changes with ion concentration.
电极电势会随离子浓度而变化。

By comparing electrode potentials, we can predict whether a redox reaction will occur spontaneously in an electrochemical cell.
通过比较电极电势,我们可以预测电化学电池中的氧化还原反应是否会自发发生。

发音 Pronunciation (IPA)

/lktrod ptnl/

词源 Etymology

electrode 来自 *electro-*(与电有关)+ -ode(源于希腊语 hodos,意为“道路/路径”,引申为电流进入或离开的“通道”);potential 源自拉丁语 potentia(“力量、能力”),在物理学中发展为“电势/势能”的概念。合在一起,electrode potential就是“电极相关的电势(差)”,用于定量描述电极的氧化还原特性。

相关词 Related Words

文学与典籍 Literary Works

  • Atkins’ Physical Chemistry(《阿特金斯物理化学》)中在电化学章节讨论电极电势与能斯特方程。
  • A. J. Bard & L. R. Faulkner, Electrochemical Methods: Fundamentals and Applications(《电化学方法:原理与应用》)中系统使用并推导电极电势相关概念。
  • IUPAC *Compendium of Chemical Terminology (Gold Book)*(IUPAC《化学术语汇编金书》)对“electrode potential/standard electrode potential”等术语给出规范定义。
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