Answer the following questions: a. Write the two electrochemical half reactions for a solid oxide fuel cell showing how CO can be utilized as a fuel in the SOFC. b. A solid-oxide fuel cell runs on methane (CH4) and produces heat and electricity. Assuming that the current output of the fuel cell is j = 1 A∕cm2 and voltage V = 0.6 V, calculate the required fuel cell active area (in cm2 ) to produce 3 kW of electrical power? c. The change in enthalpy and Gibbs free energy Δh and Δg for methane combustion at the standard operating condition of the fuel cell (750 oC, 1 atm), are (–802) and (–801) kJ/mol, respectively. Assuming 100% fuel utilization, what is the rate of heat generation by the fuel cell (Pheat, in kW) when operated at j = 1 A∕cm2 and V = 0.6 V?
Answer the following questions: a. Write the two electrochemical half reactions for a solid oxide fuel cell showing how CO can be utilized as a fuel in the SOFC. b. A solid-oxide fuel cell runs on methane (CH4) and produces heat and electricity. Assuming that the current output of the fuel cell is j = 1 A∕cm2 and voltage V = 0.6 V, calculate the required fuel cell active area (in cm2 ) to produce 3 kW of electrical power? c. The change in enthalpy and Gibbs free energy Δh and Δg for methane combustion at the standard operating condition of the fuel cell (750 oC, 1 atm), are (–802) and (–801) kJ/mol, respectively. Assuming 100% fuel utilization, what is the rate of heat generation by the fuel cell (Pheat, in kW) when operated at j = 1 A∕cm2 and V = 0.6 V?
Answer the following questions: a. Write the two electrochemical half reactions for a solid oxide fuel cell showing how CO can be utilized as a fuel in the SOFC. b. A solid-oxide fuel cell runs on methane (CH4) and produces heat and electricity. Assuming that the current output of the fuel cell is j = 1 A∕cm2 and voltage V = 0.6 V, calculate the required fuel cell active area (in cm2 ) to produce 3 kW of electrical power? c. The change in enthalpy and Gibbs free energy Δh and Δg for methane combustion at the standard operating condition of the fuel cell (750 oC, 1 atm), are (–802) and (–801) kJ/mol, respectively. Assuming 100% fuel utilization, what is the rate of heat generation by the fuel cell (Pheat, in kW) when operated at j = 1 A∕cm2 and V = 0.6 V?
. Answer the following questions: a. Write the two electrochemical half reactions for a solid oxide fuel cell showing how CO can be utilized as a fuel in the SOFC. b. A solid-oxide fuel cell runs on methane (CH4) and produces heat and electricity. Assuming that the current output of the fuel cell is j = 1 A∕cm2 and voltage V = 0.6 V, calculate the required fuel cell active area (in cm2 ) to produce 3 kW of electrical power? c. The change in enthalpy and Gibbs free energy Δh and Δg for methane combustion at the standard operating condition of the fuel cell (750 oC, 1 atm), are (–802) and (–801) kJ/mol, respectively. Assuming 100% fuel utilization, what is the rate of heat generation by the fuel cell (Pheat, in kW) when operated at j = 1 A∕cm2 and V = 0.6 V?
Transcribed Image Text:8. Answer the following questions:
a. Write the two electrochemical half reactions for a solid oxide fuel cell showing how CO
can be utilized as a fuel in the SOFC.
b. A solid-oxide fuel cell runs on methane (CH4) and produces heat and electricity.
Assuming that the current output of the fuel cell is j = 1 A/cm² and voltage V = 0.6 V,
calculate the required fuel cell active area (in cm²) to produce 3 kW of electrical power?
c. The change in enthalpy and Gibbs free energy Ah and Ag for methane combustion at
the standard operating condition of the fuel cell (750 °C, 1 atm), are (-802) and (-801)
kJ/mol, respectively. Assuming 100% fuel utilization, what is the rate of heat generation
by the fuel cell (Pheat, in kW) when operated at j = 1 A/cm² and V = 0.6 V?
Definition Definition Study of chemical reactions that result in the production of electrical energy. Electrochemistry focuses particularly on how chemical energy is converted into electrical energy and vice-versa. This energy is used in various kinds of cells, batteries, and appliances. Most electrochemical reactions involve oxidation and reduction.
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