Tarana Ahmed

5 Questions 5 Answers 0 Followers

Questions related from Tarana Ahmed

Which sample preparation method will be suitable for powder samples such as carbon black(Vulcan-XC 72R), PCNF for doing contact angle analysis?

I tried to make pellet by using 0.1gm sample, 31MPa pressure, 4minutes..When I dropped water on pellet; pellet immediately absorbs water (within less than a sec. So, if anyone has some practical...

17 August 2017 1,180 0 View

Hi everyone. during durability test in half-cell system of pemfc, Pt/CB showed no decrease even after 10000 cycles? even its little bit increase?

The durability test was done by using the following condition: air saturated 0.1M HClO4 , 500mV/s , 1-1.5V V RHE. Catalyst Preparation: 1mL ethanol, 0.01 catalyst, Nafion ionomer(5wt%) 2...

17 January 2017 222 2 View

What does mean by vertex potential 1 and vertex potential 2?

I want to take cv. My initial and final potential are 0.04 and 1.2 respectively. In this case, what will be my vertex potential 1 and vertex potential 2? Is there any condition to determine vertex...

25 August 2016 6,645 4 View

How to calculate the amount of slurry where platinum will be 20microgram for covering 0.196cm2 surface of carbon electrode?

I want to do half cell experiment for pemfc.The surface area of glassy carbon is 0.196cm2 . For coating the electrode, I made slurry with Pt/C 0.01 gm(where pt 40wt% and C 60wt%), solvent 1mL and ...

18 August 2016 9,477 1 View

How redox peak can be stable while using multicycle cyclic voltammetry?

I am using copper nanoparticle and dopamine. The mixture of copper nanoparticle and dopamine, I dropped on the surface of the glassy carbon electrode. But when I measured multi cycle(15 cycles),...

01 September 2015 8,582 4 View