Fuel Cell Using Potassium Hydroxide Solution
Fuel cells are devices that convert chemical energy into electrical energy through redox reactions. In this specific fuel cell system, the anode consists of porous carbon with nickel serving as a catalyst, where hydrogen gas and hydroxide ions are oxidized to produce water and electrons. The cathode, also made of porous carbon with nickel and nickel oxide acting as catalysts, facilitates the reduction of oxygen gas and water to hydroxide ions and electrons. The overall equation for this fuel cell process results in the production of water with an efficiency of around 70%.
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Presentation Transcript
Fuel Cell anode cathode O2 H2 ? ? Potassium Hydroxide Solution ? OVERALL EQUATION Click on labels and ?s for further information
ANODE POROUS CARBON WITH NICKEL (CATALYST) 2H2(g) +4OH-(aq) 4H2O (l) + 4e- Half Equation
CATHODE POROUS CARBON WITH NICKEL & NICKEL OXIDE (CATALYST) O2(g) + 2H2O (l) + 4e- 4OH- (aq) Half Equation
OVERALL EQUATION 2H2(g) + O2(g) 2H2O (aq) about 70% efficiency