Please describe the function of Gas DiffusionLayer and Bipolar plate in fuel cell stack.

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Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter25: Voltammetry

Section: Chapter Questions

Problem 25.5QAP

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2. a) What are the advantages of coating the nano crystals with the ceramics? b) Describe the working principle of solar cells c) In a fuel cell systems, which component is regarded as expensive and why? d) Define the term "semi-permeable membrane"
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A cylindrical sample of solid germanium has length 55.0 mm and diameter 5.0 mm. In a test circuit, 0.150 A of current flowed through this sample when the voltage applied between its ends was 17.5 V. What is the electricalconductivity of this sample?
please help me answer my chemistry assignment. About dimensional analysis. i promise to rate it helpful. please put a clearer solutions or if possible with explanation. Thank you so much. How many grams of Silver can be deposited from the electrolysis of 30g AgCl?
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Explain how cyclic voltammetry works and how it forms a cyclic voltammogram - what does this tell us?
Using what you know
A steel sheet will have a thin layer of zinc put on one side to protect it from corrosion. Determination of the zinc film thickness per one centimeter square of steel sheet when a 2 A current is employed and the electrolytic deposition process is completed in exactly 30 minutes at 25 degrees Celsius. With a 1 M zinc solution, it's safe to presume that its concentration will remain stable throughout the process.
What does this phase diagram say about using Aluminum current collectors in Li metal plating and stripping cell, at room condition?
Resistivity measurements at 300 K show that an annealed metal single crystal has amonovacancy concentration CV = 10-9. When the same crystal is quenched from a hightemperature, the measurements indicate CV = 2x10-3. Calculate the temperature of thequench [Take Hf = 51.4 kJ/mol and R = 8.314 J/mol.K]. State any assumption involved. (5)(b) Explain why the esistivity of a metal is expected to be found more at room temperature after quenching. Hint: Use Matthiessen’s rule (find out by self-studying and cite thesource.)
Purification of copper can be achieved by electrorefining copper from an impure copper anode onto a pure copper cathode in an electrolytic cell. How many hours will it take to plate 14.0 kg of copper onto the cathode if the current passed through the. cell is held constant at 35.0 A? Assume the copper in the electrolytic solution is present as Cu+. time:
What are two common applications for photoconductive cells ?

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Please describe the function of Gas Diffusion Layer and Bipolar plate in fuel cell stack.