Apply Spray on Chrome to Aluminium–air battery / ประยุกต์การพ่นโครเมี่ยมสู่แบตเตอรี่อลูมิเนียม–อากาศ
update... 14/08/2025
What is an Aluminium–Air Battery?
An Aluminium–Air (Al–Air) Battery is a type of electrochemical cell that uses aluminium (Al) as the anode and oxygen from the air as the cathode.
When aluminium reacts with water and an electrolyte, it releases electrons — generating electricity.
How it Works (Simple Explanation)
1. Anode (-) → Aluminium plate
2. Cathode (+) → Air-permeable carbon plate coated with a catalyst
3. Electrolyte → Solution such as sodium hydroxide (NaOH) or potassium hydroxide (KOH) to allow ion movement
During operation: Oxygen from the air enters the cathode Aluminium reacts with water and the electrolyte, forming aluminium hydroxide (Al(OH)₃) and releasing electrons Electrons flow through the external circuit → powering devices (lights, motors, etc.)
Advantages: High energy density (long runtime if aluminium supply is sufficient), Low-cost, widely available materials, Safer than lithium batteries (stores little energy when idle)
Disadvantages: Not rechargeable (aluminium plates must be replaced) Requires water or electrolyte refilling during extended use Aluminium corrodes slowly even when not in use if exposed to electrolyte
Real-World Applications: Emergency lighting in remote areas, Military or rescue equipment, requiring instant power, Backup power systems in submarines or communication stations
แบตเตอรี่อลูมิเนียม–อากาศ (Aluminium–Air Battery) คืออะไร?
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