Two fuel cells, each operating at 0.6 V, 0.5 A/cm2, are connected in series. The area of each of the cells is 30 cm2. The power from the stack is ____________ W
Answers
Answer:
An electrochemical cell device that converts chemical energy into electrical energy or vice
versa when a chemical reaction is occurring in the cell. Typically, it consists of two metal
electrodes immersed into an aqueous solution (electrolyte) with electrode reactions
occurring at the electrode-solution surfaces.
It consists of two electronically conducting phases (e.g., solid or liquid metals,
semiconductors, etc) connected by an ionically conducting phase (e.g aqueous or nonaqueous solution, molten salt, ionically conducting solid). As an electrical current passes, it
must change from electronic current to ionic current and back to electronic current. These
changes of conduction mode are always accompanied by oxidation and reduction reactions.
An essential feature of the electrochemical cell is that the simultaneously occurring
oxidation-reduction reactions are spatially separated. E.g., in a spontaneous "chemical
reaction" during the oxidation of hydrogen by oxygen to water, electrons are passed directly
from the hydrogen to the oxygen. In contrast, in the spontaneous electrochemical reaction in
a galvanic cell the hydrogen is oxidized at the anode by transferring electrons to the anode
and the oxygen is reduced at the cathode by accepting electrons from the cathode. The ions
produced in the electrode reactions, in this case positive hydrogen ions and the negative
hydroxyl (OH-
) ions, will recombine in the solution to form the final product of the reaction:
water. During this process the electrons are conducted from the anode to the cathode
through an outside electrical circuit where the electrical current can drive a motor, light a
light bulb, etc. The reaction can also be reversed, water can be decomposed into hydrogen
and oxygen by the application of electrical power in an electrolytic cell.
Explanation:
Answer:
Two fuel cells, each operating at 0.6 V, 0.5 A/cm2, are connected in series. The area of each of the cells is 30 cm2. The power from the stack is ____________ W
Explanation:
Two fuel cells, each operating at 0.6 V, 0.5 A/cm2, are connected in series. The area of each of the cells is 30 cm2. The power from the stack is ____________ W