04 April 2016 1 6K Report

There will be no polarised solvent to act as dielectric. So what will act like a dielectric?

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Wired ghost image- In a TEM image. What might be the cause?

I am wondering what that ghost thick outline, which is around the carbon wire image which I have attached. I did prepare my sample in a different method (sonication-dispersion in Acetone- and...

31 December 2019 1,200 10 View

No/less features when electrodes tested in two electrode cell rather than 3 electrode cell?

Determination of the Specific Capacitance of Conducting Poly... The above article is a classic paper comparing two and three-electrode measurements for supercapacitors. There are many papers...

09 October 2019 599 1 View

How is charge density of a monolayer oxide calculated?

Hello there, Often in the literature, monolyer charge density is available for metal oxides. For example; Ni(OH)2 monloyer charge desnity is 524 microC/cm2. For Ag, 2.10 C/m2 . But how is this...

07 August 2018 5,708 1 View

How do I account for the contribution to the H evolution to the Qc?

I am calculating the charge on a metal electrode and I am pretty sure there would be some H evolution in the far left end. So do I account this. What is best technique to subtract this charge...

04 May 2018 7,141 1 View

Mass of Oxide layer naturally directly formed on the metal?

Hi there, How do I find the mass of the oxide directly formed on a metal? Eg, say I have copper. I would oxidize it to form copper oxide. How can I calculate the mass of the oxide? JUST THE OXIDE...

03 April 2018 1,611 5 View

What is the typical BET surface area of nickel foam?

Hi there, I have used nickel foam for my various experiments. And the manufacturers usually say porosity

03 April 2018 7,276 3 View

Multiplet splitting in XPS?

The general idea I have is, when we have photo ionised a molecule, vacancy will be created at the core and this vacancy could be filled by the electron in the outer shell (usually transition...

02 March 2018 3,275 7 View

Nickel carbide in carbon fibers/nanotubes after the growth?

Hi there, Commonly known theory for the growth of carbon nano tubes/fibers, is that a metal carbide which is metastable is formed and then this carbide decomposes to form graphene layers and form...

01 February 2018 1,446 1 View

Electrochemical surface area of CNT?

Hi there I want to determine the electrochemical surface area of CNT on a metal substrate. I would be using Randles- Sevcik equation to determine the surface area. But the problem is, which ion...

06 July 2017 4,259 4 View

Thickness of oxide layer using XPS data?

Hey there, I need to find out the thickness of metal oxide layer on a metal using XPS data. How do I do this? Is there any free tool to find this out? And what is the logic used for the...

11 December 2016 1,997 2 View

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