Suncheol Kim

4 Questions 7 Answers 0 Followers

Questions related from Suncheol Kim

Can you explain that the mechanism of surface coating with metal oxide for cathode materials?

Hi, As I know, metal oxide materials(Al2O3, WO3 ....) have very low reactivity. Also they have high melting point. If we calcine those metal oxide with cathode material(NCM) under 500℃, it...

17 February 2023 9,646 3 View

How to calculate crystallite size over 200nm using XRD data?

Happy new year! I want to know how to calculate crystallite size using XRD data. (I got the information from TOPAS, my powder have larger than 200nm) I can calculate using scherrer equation,...

30 January 2023 993 5 View

How can I understand the movement of a peak in an XPS data with unknown causes?

Hello. I synthesized nickel iron selenide and measured XPS for analysis. I found something strange while I was analyzing the data. We don't know the cause, but compared to the previously reported...

27 July 2020 6,719 5 View

How can I analyze the EIS data? And what does height of semicircles in EIS mean?

I am studying electrochemical oxygen evolution reaction (OER). So far, I couldn't understand about the EIS. I am trying to learn EIS, but I'm still confused data analysis. I want to know what...

22 April 2020 9,816 8 View