Methanol is consumed at a rate of 32 g h-1 in a methanol-air fuel cell. (a) At an open- circuit cell voltage of 0.756 V, what is the available maximum theoretical energy (in kWh kg-1) from the cell? (b) What is the main cathode reaction, anode reaction and cell reaction? What are the possible secondary reactions or processes that lower the current efficiency? (c) In 35 hours, what is the maximum energy available (in kJ) from the cell? What assumptions you need to make to calculate the current and what is the value? (e) State the major limitations of methanol fuel cells and what can be done to improve the energy efficiency.

Methanol is consumed at a rate of 32 g h-1 in a methanol-air fuel cell. (a) At an open- circuit cell voltage of 0.756 V, what is the available maximum theoretical energy (in kWh kg-1) from the cell? (b) What is the main cathode reaction, anode reaction and cell reaction? What are the possible secondary reactions or processes that lower the current efficiency? (c) In 35 hours, what is the maximum energy available (in kJ) from the cell? What assumptions you need to make to calculate the current and what is the value? (e) State the major limitations of methanol fuel cells and what can be done to improve the energy efficiency.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 14P

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