(a) Gadolinium doped ceria (GDC), Ce1-xGdxO2-x/2-8 (0.0 ≤x≤0.2) is an important solid electrolyte being developed for intermediate temperature solid oxide fuel cells (IT- SOFCs). (i) Using Kröger-Vink notation, give an equation describing defect formation in GDC. (ii) Bearing in mind your answer to part (i) and the requirements for fast ionic transport in solids, what is the main charge carrier likely to be? Explain your answer. (iii) The value of 8 is negligible at room temperature, but increases at higher temperature. Explain this phenomenon and describe what effect it would likely have on the conductivity of GDC.

(a) Gadolinium doped ceria (GDC), Ce1-xGdxO2-x/2-8 (0.0 ≤x≤0.2) is an important solid electrolyte being developed for intermediate temperature solid oxide fuel cells (IT- SOFCs). (i) Using Kröger-Vink notation, give an equation describing defect formation in GDC. (ii) Bearing in mind your answer to part (i) and the requirements for fast ionic transport in solids, what is the main charge carrier likely to be? Explain your answer. (iii) The value of 8 is negligible at room temperature, but increases at higher temperature. Explain this phenomenon and describe what effect it would likely have on the conductivity of GDC.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: if we increase the number of trials, what will happen to the uncertainty ? and what is the…

Q: (A) if both sentences are true, (B) if both sentences are false, (C) if the first sentence is true…

A: Hii there, As there are multiple sub parts posted. we are answering first-three sub parts . If you…

Q: Q17. Which one is not related? A. Function structure B. Functional group C. Function decomposition…

A: Which one is not related is given below.

Q: How do we do question D

A: In the reaction D, substituted cyclohexane is given. Reagent can act as a nucleophile, as well as…

Q: SF, has a VSEPR notation of Do not worry about subscripts. Ex: AX,E, AX4E2 %3D

A: Sulfur belongs to VIA group, and has six electrons in its outermost shell. The electronic…

Q: Please choose all that apply and include the letter in the answer

Q: pls help! (all 3 are part of the same question) thank you so much!

A: We are given alcohol (primary or secondary) as the starting material and we have to convert them to…

Q: I got 0.03844 when I used the quadratic by hand...did I make a mistake somewhere?

A: Answer: Quadratic formula used to solve quadratic equation ay2+by+c=0 is shown below: y=-b±b2-4ac2a

Q: Please show how to solve for Q and H of the first row! Exp. # 1 2 3 4 5 Initial mol H* 0.050 mol…

A: The enthalpy of neutralization (ΔHneutralization) refers to the heat released or absorbed when an…

Q: Let Answer

A: Mechanism of the reaction

Q: 4)b. H2SO3 d. H3PO4 f. H2CRO4 h. HNO3 j. H2CO3 1. CH3COOH

A: H2SO3 = Sulphurous Acid H3PO4 = Phosphoric Acid H2CrO4 = Chromic Acid

Q: Provide an etfficient synthesis of each molecule using the starting materials indicated. While no…

A: We have to carry out the required synthesis. The required transformation is shown below (a)

Q: incorrect answer. Can the answer be in s?

A: We have been given the different concentrations at different time, we have to find rate law and rate…

Q: What statement would be appropriate for the ? in the boxes of this picture? ? H. This region is…

A: Formula of water is H2O..If some of h2o molecules are present in a compound,then that compound is…

Q: What is n? Solve for the value of N. This is on Distribution nernst

Q: how did you do question b

Q: I just can't get the same x value, could you please expand on solving for x with the quadratic…

Q: can you please also solve part b and c of this question

A: The given problem is a simple conversion of acetaldehyde to methane and carbon-monoxide. Here, our…

Q: Discuss the language demands included in the lesson on mixing substances in a 5th grade classroom by…

A: The objective of the question is to identify the language functions and demands involved in a 5th…

Q: 1. Melting point can be defined as the temperature at which the solid and liquid forms of a compound…

A: There are generally 3 states of matter- 1- solid 2- liquid 3- gas

Q: Two follow-up questions. What are the numbers out to the right of some of the equations? They look…

Q: Substance Ammonia (NH) Glucose (CoHiOs) Gold (Au) Carbon dioxide (CO₂) Sucrose (C12H2011) Molar mass…

A: 1) Glucose: It is a molecule, and it consists of carbon, hydrogen and oxygen atoms. Mass of glucose…

Q: I don't know how you got the answer, can you plz do the math step by step.

A: Recall the given reaction, CH3CO → CH3 + COActivation energy for the…

Q: What is the coefficient the should be placed in front of phosphorus (P4)? * F2+ P4- PF3 Choose What…

A: The chemical reaction follows the law of conservation of mass. According to the law of conservation…

Q: what is the final answer is quite unclear

Q: What are the answers to these questions

A: The question is based on naming the compounds. ionic compounds fully dissociate in its Aqueous…

Q: What is the unit of the answer

A: The volume of KH2PO4 is 285.64 ml

Q: this is wrong. clarify please

A: The given reaction is between Alkene reactant and HCl reagent .When both Alkene and HCl react , the…

Q: 1) What did the Stern-Gerlach experiment demonstrate?

Q: 1 nm is equal to:

A: 1nm in unit of meter is equal to 10-9 meter .

Q: Is the answer only one for this problem?

A: Three membered rings formed by two carbon and one oxygen atom is known as epoxide ring. The…

Q: HomeWork: Compare between Qualitative and Quantitative analytical chemistry.

A: qualitative analysis gives the indication about the presence or absence of a particular element in…

Q: 5. A family of compounds that often have a pleasant smell. The are commonly found in fruits. 26.…

A: 25) The compound is ESTERS(RCOOR) which provide pleasant smell to fruits.

Q: 62.44 g of ammonium bromide is dissolved in enough water to make 425 mL of solution. What is the pOH…

A: Molarity (M): The number of moles of solute per litre of the solution is known as Molarity. Its unit…

Q: Define Boyle point.

A: Given term, Boyle point

Q: The answer is incorrect can you solve again?

Q: That is the same answer I got, and it said it was wrong. Is there any chance there is a different…

Q: This what it just said to me. Incorrect, So what information goes in the boxes in the parentheses

A: Volume = 22.3 gallonsDensity = 0.8206 g/mlMass we have to calculate

Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

Please answer all the questions with reasonings

(a) Gadolinium doped ceria (GDC), Ce1-xGdxO2-x/2-8 (0.0 ≤x≤0.2) is an important solid
electrolyte being developed for intermediate temperature solid oxide fuel cells (IT-
SOFCs).
(i) Using Kröger-Vink notation, give an equation describing defect formation in GDC.
(ii) Bearing in mind your answer to part (i) and the requirements for fast ionic transport in
solids, what is the main charge carrier likely to be? Explain your answer.
(iii) The value of 8 is negligible at room temperature, but increases at higher temperature.
Explain this phenomenon and describe what effect it would likely have on the
conductivity of GDC.
(iv) Make a sketch showing how GDC might be used in a solid oxide fuel cell, using H₂ as
a fuel and O₂ as the oxidant. Give the relevant half reactions and indicate on which
side of your cell that water is produced.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduction

VIEW

Step 2: Defect formation in GDC (Kröger-Vink notation)

VIEW

Step 3: GDC Main Loader

VIEW

Step 4: Dependence on temperature

VIEW

Step 5: Effect on GDC Conductivity

VIEW

Step 6: GDC in a Solid Oxide Fuel Cell

VIEW

Solution

VIEW

Step by step

Solved in 7 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

can you double check the letter and the answer you have circled they are the opposite?
Apply the significant figure rule to the final answer. Example attached and dig figures rules
Now how would you determine the endpoint from this graph?
This is not correct, if you don't use sig figs until the end and get 1.89882 = 1.898 it is NOT correct, how do I do this problem, because this isn't correct.
Which of the following compounds has a lower boiling points? Provide the main reason for your choice. A Lower b.p. compound: Reason:
I need the correct answer very fast please
Choose the correct answer. Choose... Choose... Choose... Choose...
Analytical chemistry
If this piece of blue litmus paper is placed in that acid solution,then this piece of blue litmus paper will turn red.which of the following is true of this conditional statement: A. The antecedent is "this piece of blue litmus paper will turn red." B. This statement is false. C. This statement cannot serve as a premise in an argument. D. This statement cannot be the conclusion of an argument.