Khantesh Agrawal

10 Questions 10 Answers 0 Followers

Questions related from Khantesh Agrawal

Why does Pt(100) peak shift during accelerated durability test (ex-situ mode)?

Hi, I have synthesized Pt thin film and was testing its stability under 30,000 electrochemical potential cycling in 0.1M HClO4. However, I am unable to understand why does Pt(100) peak (at...

02 January 2023 2,985 0 View

Will Open Circuit Potential(OCP) be the same for all portion in the e-beam evaporated gold on silicon wafer?

I have been using Au(150nm)/Ti(20nm) on Si wafer for doing Pt electrodeposition. If I am getting irreproducible results (variation in Pt electrodeposition across several e-beam evaporated Si...

08 July 2020 5,347 0 View

How should I purify my electrolyte (0.1M HClO4 or 0.5M H2SO4) before using it for a cyclic voltamemtry expt (for Pt electrocatalyst in fuel cell)?

I know about the common practice of purging the inert gas like N2 or Ar, in order to remove dissolved oxygen from the electrolyte, but are there any other methods apart from these? Kindly share...

24 March 2020 9,570 3 View

What are the ways to characterize a Ag/AgCl/KCl reference electrode apart from OCP test?

Before using it for electrochemistry purposes, are there any tests that we should perform to make sure that the reference electrode is working properly?

21 March 2020 7,775 4 View

What adhesive layer is required for silver sputtering on silicon wafer?

Hi, I need to sputter silver on silicon wafer to further use it in the acidic media. Do I require to put sme adhesive layer like Cr/Ti in case of Au? I need to ensure that the silver shouldn't...

01 October 2019 9,531 1 View

How do I calculate ECSA for slanted CVs?

Dear All, I understand that in PEM Fuel Cell, the electrocatalyst are evaluated by the ECSA, which is calculated by taking an appropriate "flat" baseline between 0.35 and 0.4V. I was doing the...

20 August 2019 8,843 1 View

Can SEM EDS (Energy Dispersive Spectroscopy) differentiate between Gold and Platinum?

I have done platinum electrodespoition on Gold. I would like to know if it can detect both Pt and Gold as their binding energies are close enough. Thanking you in anticipation. Khantesh

17 May 2019 7,213 7 View

Can saturated calomel reference electrode (SCE) be always replaced by Ag/AgCl/KCl reference electrode in a 3 electrode system?

I have been trying to do Pt deposition on Silver, but the papers I am referring use Saturated calomel electrode (SCE). Can Ag/AgCl/KCl be used instead of that or it might have some stability...

13 January 2019 7,976 3 View

Will usage of Ag/AgCl/KCl(1M) as a reference electrode cause any problem if silver is used as a working electrode?

I have silver working electrode and Ag/AgCl/KCl electrode. Will it be any problem if I am using potential from -0.6 V to 1.2 V vs Ag/AgCl/KCl. Will it be of any problem?

11 January 2019 937 7 View

Why should I do CV of a catalyst in PEMFC in HClO4 or H2SO4 only?

I have seen this in many research papers that people use either H2SO4 or HClO4 for testing cyclic voltammetry of the catalyst for PEMFC. I am curious to know what can this be done in other acids...

27 March 2018 5,025 7 View