Sanghyun Lee

4 Questions 2 Answers 0 Followers

Questions related from Sanghyun Lee

Why does the cathode (of lithium-ion batteries or sodium-ion batteries) fail to reach the charging voltage during the first charging process?

I am researching layered oxide anode materials for sodium-ion batteries. In the last experiment, I manufactured a coin cell (CR2032) using a Na(Ni1/3Fe1/3Mn1/3)O2 anode and a sodium metal cathode...

20 November 2023 5,179 2 View

How can I prepare positively charged 1T-MoS2 nanosheets dispersion in ethanol?

Hello everyone, I tried to make a positively charged 1T-MoS2 nanosheets dispersion in ethanol using CTAB. First, the exfoliated 1T-MoS2 nanosheets and CTAB were added to the DI water in a weight...

29 June 2021 1,081 3 View

Why E1g mode (Molybdenum disulfide) is undetectable in Raman spectroscopy?

I synthesized 1T/2H hybrid phase MoS2 on a graphite foil surface by hydrothermal method, and then analyzed it by Raman spectroscopy. As a result, three new peaks correspond to the 1T phase were...

05 February 2021 6,921 2 View

Why do I get air bubbles at the Pt counter electrode during the cyclic voltammetry at positive potential?

Hi, I want to know the reason why air bubbles are generated only at the Pt counter electrode during cyclic voltammetry test. I used Cobalt oxide/Carbon paper working electrode and Hg/HgO reference...

06 January 2016 8,216 11 View