之间的区别Electrochemical Cell and Galvanic Cell

这关键区别在电化学细胞和电池之间是most electrochemical cells tend to convert electrical energy into chemical energy, whereas galvanic cells tend to convert chemical energy into electrical energy.

氧化和还原reactions play an important role in electrochemistry. In an oxidation-reduction reaction, electrons are transferred from one reactant to another. The substance that accepts electrons is the reducing agent, whereas the substance which gives away the electron is the oxidizing agent. The reducing agent is responsible for reducing the other reactant while undergoing oxidation itself; for the oxidizing agent, this is vice versa. These reactions occur in two half-reactions to show separate oxidations and reductions; thus, it shows the number of electrons moving in or out.

CONTENTS

1。概述和关键差异
2。什么是电化学细胞
3。什么是电池
4。并排比较 - 表格形式的电化学细胞与电池
5。Summary

什么是电化学细胞?

电化学细胞是还原剂和氧化剂的组合，它们在物理上彼此分离。通常，我们通过盐桥进行这种分离。尽管它们是物理分离的，但两个半细胞彼此都处于化学接触。电解and galvanic cells are two types of electrochemical cells.

Oxidation-reduction reactions take place in both electrolytic and galvanic cells. Therefore, in an electrochemical cell, there are two electrodes as an阳极and acathode。Both electrodes externally connect with a high resistant voltmeter; therefore, current there is not transmitting between the electrodes. Therefore, this voltmeter helps to maintain a certain voltage between the electrodes where oxidation reactions take place.

在阳极发生氧化反应,the reduction reaction takes place on the cathode. We need to immerse them in separate electrolyte solutions. Normally, these solutions are ionic solutions related to the type of electrode. For example, we immerse copper electrodes in a copper sulfate solution and silver electrodes in a silver chloride solution. These solutions are different; hence, they have to be separated. The most common way to separate them is a salt bridge. In an electrochemical cell, the potential energy of the cell converts to an electrical current, which we can use to light a bulb or to do some other electrical work.

什么是电池？

电流或伏特细胞储存电能。电池由一系列电池组成，以产生更高的电压。电细胞中两个电极的反应倾向于自发地进行。当反应发生时，通过外部导体从阳极到阴极的电子流动。

例如，如果两个电极在电池中是银和铜，则银电极相对于铜电极为正。铜电极是阳极，它经历氧化反应并释放电子。这些电子通过外电路进入银阴极。因此，银阴极经历还原反应。两个电极之间产生了电势差，这允许电子流。以下是上述电池的自发细胞反应。

2 Ag⁺（aq） + cu（s）⇌2ag（s） + cu²⁺(aq)

电化学细胞和电池有什么区别？

有两种类型的电化学细胞作为电解细胞和电细胞。电化学细胞和电池之间的关键区别在于，大多数电化学细胞倾向于将电能转化为化学能，而电流细胞倾向于将化学能转化为电能。此外，在大多数电化学细胞（例如电解细胞）中，阳极是阳性末端，而阴极为负末端。然而，在电池中，阳极是负末端，阴极是正末端。

此外，电化学细胞和电细胞之间的进一步差异是，在电化学细胞（例如电解细胞）中，发生了非自发化学反应，但在电流细胞中发生了自发化学反应。

Summary – Electrochemical vs and Galvanic Cell

有两种类型的电化学细胞作为电解细胞和电细胞。电化学细胞和电池之间的关键区别在于，大多数电化学细胞倾向于将电能转化为化学能，而电流细胞倾向于将化学能转化为电能。

参考：

1。“Electrochemical Cell.”电化学单元格 - 概述|ScienceDirect主题，，，，在这里可用。

图片提供：

1. Alksub在英语Wikipedia上撰写的“ Electrochemcel”（CC BY-SA 3.0）通过下议院维基梅迪亚
2.格林格（Gringer）的“电源单元” - 文件：galvanische zelle.png，tinux（CC BY-SA 3.0）通过下议院维基梅迪亚