Saurav Chandra Sarma

12 Questions 16 Answers 0 Followers

Questions related from Saurav Chandra Sarma

Should the RDE scan of electrochemical Oxygen Reduction Reaction be positive-going RDE scan or a negative-going RDE scan?

Hi, When we perform an electrochemical oxygen reduction reaction, should it be a positive-going RDE scan or a negative-going RDE scan? Thanks, Saurav

11 November 2019 4,815 8 View

What are the 3 basic conditions for impedance measurements that it must satisfy?

Hi All, Reviewer has asked to demonstrate that EIS data conforms the three basic conditions for impedance measurements. Can anyone please clarify what are these 3 conditions? Thanks, Saurav

05 May 2019 8,913 3 View

How to selectively block Selenium active sites?

Hi, I am working with noble-metal selenide for electrochemical hydrogen evolution reaction in acidic medium. Using DFT, I found that Se sites are active towards HER. I want to prove it...

09 September 2018 8,470 3 View

Can Mott-schottky plot be used in electrochemistry?

Hi, I have a semiconductor system that I am using to understand electroreduction reaction. Can I use Mott-schottky plot to comment on the n-type/p-type behavior of the system? My worry is that I...

03 March 2018 4,433 3 View

Can I use Stainless steel plate as counter electrode for accelerated degradation test in HER?

Hi, I have been using Pt coil as counter electrode for HER in 0.5 M H2SO4. Unfortunately, we can observe Pt leaching out from the coil during prolonged cycling. To avoid this I started using...

09 September 2017 6,442 7 View

Should we purge oxygen in KOH before performing electrochemical OER?

Hi, While going though the literature I found two sets of researchers- one who purge electrolyte with O2 before OER and another set who purge N2 before OER. I am confused what to do. Please...

09 September 2017 3,586 7 View

Can anyone help me with electrochemistry of Palladium in alkaline medium?

Hi, If I have two types of Pd in my system, will I observe splitted Pd-O reduction region in CV corresponding to the presence of two types of Pd? Thanks, Saurav

12 December 2016 5,141 2 View

What is the correct way for stability check for ORR?

Hi, I am doing stability check for my catalyst using ADT method. If I am doing a 5000 cycle stability check, then should I do the 5000 cycles in one shot or can I break up into 5 x 1000...

09 September 2016 3,052 4 View

Can anyone please explain me the difference between NHE, RHE and SHE in a simple way?

I am too confused by the use of these terms (NHE, RHE and SHE) in research papers. Can anyone please help me out?

03 March 2016 9,029 5 View

Can I have an ECSA value of 10.9 cm2 for commercially available Pd/C?

I have measured the ECSA value of commercially available 20 wt% Pd/C, from the Pd-O reduction region, in 0.5 M KOH. I am getting it to be 10.92 cm2. which is around 52 m2/gPd. Is it possible?

03 March 2016 8,526 2 View

Finding Problem with electron count calculation for ORR. Can anyone please help me out?

I am getting an electron count of 2.7-3 for Pt/C ( 20 Wt% ) instead of 4. Can anyone please help me with this problem? Also, which potential region has to be used for the electorn count- Mixed or...

02 February 2016 5,931 7 View

How to find percentage composition from dual phase refinement in Fullprof?

I did a dual phase refinement in Fullprof and the chi square value is 2.68. I want to know how to calculate the contribution from each phase to the XRD pattern. Following lines are from my PCR...

07 July 2015 6,369 0 View