Alkaline Battery Discharge

Zn + 2MnO2 + H2O → ZnO + 2MnOOH

개요

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.

참여 물질

역할 물질 계수 상태
반응물 Zinc Zn 1 (s)
반응물 Water H₂O 1 (l)
반응물 Manganese Dioxide MnO₂ 2 (s)

일상 속 예시

Duracell and Energizer AA batteries are alkaline cells — the most common battery type in the developed world.

산업적 중요성

전 세계적으로 매년 약 100억 개의 알칼리 전지가 판매되며, 500억 달러 규모의 1차 전지 시장에서 가장 큰 부문을 차지합니다.

성질

유형
Electrochemical
가역 반응
아니오
에너지
발열
ΔH
-315.0 kJ/mol

관련 반응

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

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.