V2EX standard hydrogen electrode

Standard Hydrogen Electrode

释义 Definition(中文)

标准氢电极(缩写 SHE):电化学中用于定义与比较电极电势的基准电极。按约定,在标准条件下(常见表述为:氢气活度为 1、氢离子活度为 1、温度 25°C 等),其电极电势被定义为 0.00 V,用于测定其他半电池的标准电极电势。

发音 Pronunciation(IPA)

/stndrd hadrdn lktrod/

例句 Examples

The standard hydrogen electrode has a potential of 0.00 V by convention.
按约定,标准氢电极的电势为 0.00 V。

Using the standard hydrogen electrode as a reference, we can determine the standard electrode potential of the copper(II)/copper couple from measured cell voltages.
以标准氢电极作为参比,我们可以根据测得的电池电压求出铜(II)/铜电对的标准电极电势。

词源 Etymology(中文)

该术语由三部分构成:standard(标准的)+ hydrogen(氢)+ electrode(电极)。之所以称“标准”,是因为它被选作统一的零点参照,使不同实验不同电极体系的电势可以在同一标尺上比较。

相关词 Related Words

文学与经典著作 Literary Works(出现/讨论该术语的知名作品)

  • Atkins’ Physical Chemistry(《阿特金斯物理化学》)
  • Electrochemical Methods: Fundamentals and Applications(Bard & Faulkner,《电化学方法:原理与应用》)
  • Physical Chemistry(Peter W. Atkins & Julio de Paula,《物理化学》相关版本中均系统讨论)
  • IUPAC 的电化学术语与推荐(有关标准电极电势与参比电极的规范性说明)
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