Can you make a battery with two gasses?

[Thecla]

TL;DR

making a battery with gasses instead of metal plates

You can make a fuel cell with hydrogen and oxygen gas, but can you make a battery with a tank of hydrogen and a tank of oxygen?

 

[Borek]

How do you define "battery"? Or why the fuel cell with two tanks doesn't count?

 

[Thecla]

something similar to car battery. everything is stationary. sort of a gas phase battery

 

[Mark Roworth]

A thundercloud is a big battery made of gas. From memory, the light, positive ions move to the top of the cloud, and the heavy negative ions move to the bottom. The plasma discharge of the gas is the lightbulb flashing on for a moment.

 

[Borek]

Put two tanks and the fuel cell in a single box. You can't say from the outside what is inside, it doesn't behave differently than a chemical battery, so I am ready to call it a battery.