Zinc-Carbon Battery (Leclanché Cell)

Zn + 2MnO2 + 2NH4Cl → ZnCl2 + Mn2O3 + 2NH3 + H2O

概述

The zinc-carbon cell uses a zinc casing as anode and a carbon rod surrounded by MnO₂ paste as cathode, with ammonium chloride paste electrolyte. Cell voltage is about 1.5 V. Invented by Georges Leclanché in 1866, it was the dominant primary battery for over a century before being largely replaced by alkaline cells.

参与者

角色 物质 系数 状态
反应物 Zinc Zn 1 (s)
反应物 Manganese Dioxide MnO₂ 2 (s)
反应物 Ammonium Chloride NH₄Cl 2 (s)
产物 Water H₂O 1 (l)

日常示例

The cheapest AA and AAA batteries at the store are zinc-carbon cells, suitable for low-drain devices like remote controls and clocks.

工业重要性

锌碳电池因成本极低仍占全球电池销量的数十亿只，适用于低功耗家用设备如遥控器、时钟和玩具。

属性

类型
Electrochemical
可逆
否
能量
放热
ΔH
-280.0 kJ/mol

相关反应

Electrolysis of Water Electrolytic Production of Chlorate Electrorefining of Copper Alkaline Battery Discharge Anodizing of Aluminum Cathodic Protection (Zinc Sacrificial Anode) Chlor-Alkali Electrolysis Chrome Electroplating Nickel-Metal Hydride Battery Electrochemical CO₂ Reduction to CO

Frequently Asked Questions

What is the equation for Zinc-Carbon Battery (Leclanché Cell)?
The balanced equation is: Zn + 2MnO₂ + 2NH₄Cl → ZnCl₂ + Mn₂O₃ + 2NH₃ + H₂O.
What type of reaction is Zinc-Carbon Battery (Leclanché Cell)?
Zinc-Carbon Battery (Leclanché Cell) is a electrochemical reaction.
Is Zinc-Carbon Battery (Leclanché Cell) exothermic or endothermic?
Zinc-Carbon Battery (Leclanché Cell) is exothermic (releases energy). The enthalpy change (ΔH) is -280.0 kJ/mol.