V2EX half-cell

Half-cell

Definition 定义

半电池:电化学电池中的一个组成部分,通常由电极和与其接触的电解质溶液构成;它单独表现为一个氧化还原过程,并具有相应的电极电位。(在原电池/电解池中,两个半电池通过外电路与盐桥等连接形成完整电池。)

Pronunciation 发音

/hf sel/

Examples 例句

A half-cell consists of an electrode immersed in an electrolyte.
半电池由浸在电解质中的电极构成。

To calculate the cell voltage, we compare the electrode potentials of the two half-cells under standard conditions.
要计算电池电压,我们在标准条件下比较两个半电池的电极电位。

Etymology 词源

half- 意为“半个、部分”,cell 在科学语境中可指“电池/电化学装置的单元”。合起来 half-cell 字面意思就是“半个电池单元”,用于强调它只是完整电池体系的一侧(一个电极反应体系),需要与另一个半电池配对才能形成完整回路并输出电压。

Related Words 相关词

Literary Works 文学作品

  • Electrochemical Methods: Fundamentals and Applications(Allen J. Bard, Larry R. Faulkner):经典电化学教材/专著中频繁使用 half-cell 讨论电极过程与电位测量。
  • Physical Chemistry(Peter Atkins, Julio de Paula):在电化学章节中用 half-cell 解释原电池、电极电势与能斯特方程相关概念。
  • Textbook of Electrochemistry(Jürgen O. Bockris, Amulya K. N. Reddy 等):在电极反应与电池结构的表述中常见 half-cell
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