Deck 13: Fuel Cells

Question 1

Pure hydrogen is not a readily available fuel source in large quantities; therefore, hydrogen gas is generated through a(n) _____________ process.

Answer 1

reforming

Question 2

A fuel cell is an electrochemical power source that converts the chemical energy of two reactants directly into mechanical energy.

Answer 2

False

Question 3

The basic cell electrochemical reaction in fuel cells uses hydrogen gas as a fuel and breaks the hydrogen gas into hydrogen ions and electrons using a(n) _____________ on the anode.

Answer 3

catalyst

Question 4

What is an oxidant or oxidizing agent?

Question 5

A(n) ____________ is a substance that causes or accelerates a chemical reaction without itself being changed.

Question 6

Define cell polarization.

Question 7

Solid oxide fuel cells (SOFCs) operate in the temperature range of 800°C - 1000°C.

Question 8

Well-designed fuel cell systems have high energy conversion ___________ from full load to partial load.

Question 9

A reducing agent is the element in a reaction that loses electrons.

Question 10

Fuel cells are an energy resource.

Question 11

In a fuel cell, the _____________ isolates the reactions between anode and cathode, not allowing the electrons to pass, but allowing the ions to pass.

Question 12

What is the reason for cell stacking?

Question 13

Name the six types of fuel cells.

Question 14

The oxygen electrode is the cathode and is considered positive with respect to the hydrogen electrode, called the anode.

Question 15

What is an advantage of high temperature fuel cells?