Shasika Panamaldeniya

10 Questions 18 Answers 0 Followers

Questions related from Shasika Panamaldeniya

Can we perform Raman for Liquid solutions?

I want to take Raman for Graphene oxide solution. To do that, I planned to perform by placing a drop of graphene oxide in between two glass plates. is it a good method or bad method?

09 January 2023 3,554 5 View

Formation of SEI on Nb2O5/rGO electrode surface while performing EIS ?

I have obtained EIS data for Nb2O5/rGO composite for LIB anode using coincell type cell assembling using 5mV signal with frequency range 100 mHz to 1MHz. When modeling and fitting the Nyquist plot...

07 August 2022 868 0 View

Powder XRD of commercially avilable Nb2O5 ?

Can anyone share (or DOI of research article) a X- ray diffractogram with proper phases (analyzed) of commercially avilable powder Nb2O5 (−325 mesh, 99.9% trace metals basis, Sigma Aldrich)....

10 March 2022 3,657 4 View

Exact graphene oxide (GO) plane? (002) or (001) or what ?

I have synthesized graphene oxide by following modified hummers method. in PXRD, for a gaphene oxide, generally peak appered around 2(theta)= 11 degree. Eventhough graphite peak also appeared at...

21 February 2022 229 4 View

Is there any possibility to reduce the oxidation state of a powder by reacting with reducing agent ?

I want to change the oxidation state of Nb2O5 powder sample to lower number like +4 or +3. in this case I'm planned to dissolve Nb2O5 in water and added reducing agent like ascorbic acid ? do I...

20 January 2022 7,574 11 View

Can anyone share FTIR spectrum of pure TiO2 and Nb2O5 ?

Can anyone share FTIR spectrums of commercially available TiO2 p21( p25 or p21) and Nb2O5 powders.

18 December 2021 8,163 3 View

What is the role of reduced graphene oxide in composites anodes in Lithium ion battery ?

what are the other purpose by adding graphene in to composite anodes in lithium ion battery rather than improving electronic conductivity in the potential range of 1-3 V vs Li/Li+

18 December 2021 6,952 6 View

What is the reason for appearing hump (h) in a TiO2 as an Anode in lithium ion batteries ?

Here I attached the galvanostatic charge discharge profile of TiO2 as an anode for lithium ion battery. when battery charging a little hump can be seen as shown in region 2 before start the...

18 December 2021 9,855 3 View

How to analyze the Raman spectrum of pristine Nb2O5 ?

i have a Raman spectrum of pristine Nb2O5. The spectrum was fitted with lorentz function and matched with lot of unknown peaks. it would be great someone can explained spectrum. The corresponding...

12 December 2021 3,348 4 View

What is the reason for arising 3 peaks around 2theta value 24 degree in XRD in reduced graphene oxide ?

I have synthesized reduced graphene oxide(rGO) using Modified Hummer's Method. Then i was characterized the rGO sample using XRD. normally when graphite reduced to graphene there is appearing...

13 December 2020 7,342 2 View