Ibrahim Mustafa

4 Questions 10 Answers 0 Followers

Questions related from Ibrahim Mustafa

Regarding Electromagnetic impulse (EMI) research on materials: how to calculate Permittivity and permeability from S parameters?

Hello! Were doing research on a material to test its performance and applicability for EMI applications, and we are new to this topic. We have determined the S value for our material from a...

06 May 2021 671 4 View

Why do most papers use constant current instead of constant voltage whilst charging and discharging redox batteries?

Dear All, When performing charge/ discharge experiments for redox flow batteries, almost always reported experiments are performed by using a chronopotentiometry method (Constant current is...

19 June 2016 5,407 3 View

How can I get a good fit for my experimental EIS results, especially where the semi arch is not well defined?

Dear All, My Procedures: I am performing 2 EIS experiments as follows: I used a 3 electrode cell (CE, RE, WE, S electrodes) with a 0.05M Vanadium (4) in 3M H2SO4 electrolyte. The frequency ranged...

26 May 2016 3,420 8 View

How can I prepare 1.2M V 3.0M H2SO4 from VOSO4.xH2O for vanadium flow batteries?

Hello, I am working on vanadium flow batteries, and I am planning to make 250mL of: 1.2M VOSO4 + 3.0M H2SO4. from: VOSO4.xH2O , concentrated sulfuric acid, and DI water. I have vanadium in the...

05 August 2015 3,277 8 View