Alkaline Battery Discharge
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Zn + 2MnO2 + H2O → ZnO + 2MnOOH
概要
Alkaline batteries use zinc powder anode and MnO₂ cathode in potassium hydroxide electrolyte, producing 1.5 V. They offer 4–9 times the capacity of zinc-carbon cells for high-drain devices. The alkaline electrolyte provides lower internal resistance and better performance at high current.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Zinc Zn | 1 | (s) |
| 反応物 | Water H₂O | 1 | (l) |
| 反応物 | Manganese Dioxide MnO₂ | 2 | (s) |
日常の例
Duracell and Energizer AA batteries are alkaline cells — the most common battery type in the developed world.
産業上の重要性
世界で年間約100億個のアルカリ電池が販売されており、500億ドル規模の一次電池市場における最大のセグメントを占めています。
特性
- タイプ
- Electrochemical
- 可逆的
- いいえ
- エネルギー
- 発熱性
- ΔH
- -315.0 kJ/mol
Frequently Asked Questions
What is the equation for Alkaline Battery Discharge?
The balanced equation is: Zn + 2MnO₂ + H₂O → ZnO + 2MnOOH.
What type of reaction is Alkaline Battery Discharge?
Alkaline Battery Discharge is a electrochemical reaction.
Is Alkaline Battery Discharge exothermic or endothermic?
Alkaline Battery Discharge is exothermic (releases energy). The enthalpy change (ΔH) is -315.0 kJ/mol.