Alkaline Battery Discharge

Zn + 2MnO₂ + H₂O → ZnO + 2MnOOH

Tổng quan

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.

Người tham gia

Vai trò	Chất	Hệ số	Trạng thái
Chất phản ứng	Zinc Zn	1	(s)
Chất phản ứng	Water H₂O	1	(l)
Chất phản ứng	Manganese Dioxide MnO₂	2	(s)

Ví dụ thực tế

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

Tầm quan trọng công nghiệp

About 10 billion alkaline batteries are sold globally each year, representing the largest segment of the $50 billion primary battery market.

Tính chất

Loại: Electrochemical
Thuận nghịch: Không
Năng lượng: Tỏa nhiệt
ΔH: -315,0 kJ/mol

Phản ứng liên quan

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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.