So how much Water is produced by a Fuel Cell?

This is the Fuel Cell equation:

Example — Toyota Mirai on a 100km road trip

Now consider a real-life example to see whether a useful quantity of water is produced when a Fuel Cell is operated.

How to catch the Fuel Cell Water?

Before one can access this water, it needs to be caught. In this instance, Toyota Mirai solves the problem easily. It catches the water till its on-board water tank is full and any further water produced is let off while driving. On the dashboard is a button “H2O” which when pressed will empty or purge the on-board water tank.

Credit source —

Is the Fuel Cell Water clean enough to drink?

This is the fundamental question. The fuel-cell water is pure as seen in the equation above, so the fuel cell process itself will not pollute the water. If any impurities get into this water it will be due to the storage tank or during its discharge if the tailpipe is not clean, which is possible if it collects dust on the rim as the car travels on dirty roads.

Credit source — Browning

How about Water produced from Hydrogen-batteries at home?

Cars or FCEVs are not the only applications of Fuel Cells. Fuel Cells are now serving as energy sources to complement or supplement or even completely replace home batteries that are usually charged with Solar energy.



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Sandeep Chandra

Interests and stakes in Renewable Energy, Green Hydrogen, Batteries, EVs, FCEVs and Hybrid EVs, Data Science