How to reduce self-discharge of supercapacitor? Is there any difference on self-discharge due to electrolyte used?

We are having some issues with self-discharge of supercapacitors. Is that normal, aqueous based device discharge in few hours? Is there any trick to solve that? Is electrolyte dependent the...

05 June 2018 7,225 0 View

Does anyone work with Diniobium Carbide (Nb2C)?

I would like to know if material is electrical conductive on nanosize domains. How different it is from NbC is Nb2C? Any literature?

05 June 2018 6,351 3 View

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08 September 2014 5,338 4 View

Why is CVD diamond opaque?

I was wondering if you could give me a clue. The band gap of diamond is 5.5eV, which means it should be transparent to all visible radiation. That is not what we have seen from CVD samples. Also,...

08 September 2014 5,292 12 View

What is a realistic value for specific capacitance of carbon materials?

E.g. graphite, graphene, nanotubes, diamonds with mass around 10 mg, two electrode cells, and current around 1A/g in non-aqueous solution (3V). We see so many different values in the literature...

01 February 2014 7,270 6 View

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Is that possible somehow measure Fermi level up or down shifts on material (semiconductor, Graphene, graphite etc) with Raman spectroscopy?

01 January 1970 9,459 5 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

What is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

How does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

How to troubleshoot Electrochromic Films and Electrochromic Devices?

I am trying to characterize an electrochromic system. The system uses ITO electrodes on glass, WO3 as the electrochromic film, and NiO as the ion storage layer. When I deposit NiO and WO3 and...

23 February 2021 9,592 2 View