H2-O2 fuel cell#electrochemistry@Reach your goal 👍

Fuel cells:-
Fuel cells consisting of 2 electrodes and an electrolyte which convert the chemical energy of chemical reaction between fuel and oxidant into electrical energy.
📌 The conventional process to produce electrical energy is as follows

Chemical energy ------ Heat ------- Mechanical energy ------- Electrical energy.

But in fuel cell, it directly converted chemical energy into electrical energy.

📌 The efficiency of energy conversion in fuel cell approaches 70%.
📌 It is only used 15-20% in gasoline powered engines and 30 -35% in diesel engines.
📌 Fuel cell consists of two electrodes, catalyst, and an electrolyte..

H2-O2 fuel cell :-

📌H2 acts as an anode,O2 acts as an cathode, pt is used as an catalyst and KOH is used as an electrolyte..
📌 H2-O2 fuel cell consists of two porous graphite electrodes which is coated as pt becoz reason is pt absorbs H2 gas easily..25% KOH solution is used as an electrolyte solution.So here both the electrodes are dipped in electrolyte solution and inlet H2 and O2 gases. H2 and O2 gases are continuously supplied to the anode and cathode respectively.The hydrogen is oxidised and the electrons lost.In this process migrate to the cathode through the external circuit. Oxygen at cathode receive the electrons and gets reduced to OH- ..
Advantages:-
📌The product H2O is drinking water for Astronauts..
📌 Noise and Thermal pollution are low.
📌 Maintenance cost is low for fuels...

Uses:-
H2-O2 fuel cell are used in space vehicles, military and mobile power system..

Thankyou for watching..... Yours truly Pavani 😊

Electrochemistryfuel cellsH2-O2 fuel cell