Skip to main content
Ch.20 - Electrochemistry
Chapter 20, Problem 86b

(b) Can the “fuel” of a fuel cell be a solid?

Verified Solution

Video duration:
2m
This video solution was recommended by our tutors as helpful for the problem above.
Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Fuel Cells

Fuel cells are electrochemical devices that convert chemical energy from a fuel into electricity through a reaction with an oxidant. They typically use hydrogen as a fuel, but other substances can also serve as fuels. Understanding the basic operation of fuel cells is essential to determine the feasibility of using different states of matter as fuel.
Recommended video:
Guided course
01:21
The Electrolytic Cell

States of Matter

Matter exists in different states: solid, liquid, and gas. Each state has distinct properties that affect how substances interact in chemical reactions. In the context of fuel cells, the state of the fuel can influence its reactivity, transport, and overall efficiency in generating electricity.
Recommended video:
Guided course
03:55
Element States of Matter

Solid Fuels in Energy Systems

Solid fuels, such as coal or biomass, can be used in various energy systems, including gasification processes that convert them into gaseous fuels suitable for fuel cells. The ability to utilize solid fuels in fuel cells depends on the technology employed and the conversion methods used to make the solid fuel reactive in an electrochemical environment.
Recommended video:
Guided course
01:31
Crystalline Solids Structure
Related Practice
Textbook Question

Li-ion batteries used in automobiles typically use a LiMn2O4 cathode in place of the LiCoO2 cathode found in most Li-ion batteries. (b) Which material has a higher percentage of lithium? Does this help to explain why batteries made with LiMn2O4 cathodes deliver less power on discharging?

346
views
Textbook Question

Li-ion batteries used in automobiles typically use a LiMn2O4 cathode in place of the LiCoO2 cathode found in most Li-ion batteries. (c) In a battery that uses a LiCoO2 cathode, approximately 50% of the lithium migrates from the cathode to the anode on charging. In a battery that uses a LiMn2O4 cathode, what fraction of the lithium in LiMn2O4 would need to migrate out of the cathode to deliver the same amount of lithium to the graphite anode?

415
views
Textbook Question

(a) Which reaction is spontaneous in the hydrogen fuel cell: hydrogen gas plus oxygen gas makes water, or water makes hydrogen gas plus oxygen gas?

894
views
Textbook Question

Iron corrodes to produce rust, Fe2O3, but other corrosion products that can form are Fe(O)(OH), iron oxyhydroxide, and magnetite, Fe3O4. (a) What is the oxidation number of Fe in iron oxyhydroxide, assuming oxygen's oxidation number is -2?

1236
views
Textbook Question

Copper corrodes to cuprous oxide, Cu2O, or cupric oxide, CuO, depending on environmental conditions. (a) What is the oxidation state of copper in cuprous oxide?

938
views
Textbook Question

(c) What process occurs at the anode in the electrolysis of molten NaCl?

646
views