An allotropic form of carbon that is used in pencils, as a lubricant, and in matches and explosives. It is obtained by mining and its dust can... | Contact experts in Graphite to get answers
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Questions related to Graphite
I am normalizing with respect to the G band, in this way I obtain as Raman intensity for this band a value of 1.00 and for the D band a value of 1.42, in this way I calculate ID / IG = 1.42, I...
22 December 2019 7,203 3 View
With glassy carbon, I've been using the Fc/Fc+ redox couple as an internal reference, since I'm using an Ag/Ag+ reference electrode. However, with a graphite electrode surface, Fc/Fc+ doesn't...
16 December 2019 6,582 1 View
can anyone please share an answer or include a paper reference on the relationship between lithium-ion battery cycling and impedance spectra. I am more interested in EIS (solution resistance,...
12 December 2019 9,135 4 View
What are the effects of adding too much catalyst in a suzuki reaction? I seem to be getting a majority of the mono coupled product and recovering starting material enough though I add an excess of...
28 November 2019 5,934 8 View
Hello, I made some TEM analysis of some activated carbons made at 800°C in Ar atmosphere and then activated through CO2 for 15 min. From the TEM images i found that sometimes the carbon layers are...
25 November 2019 4,361 3 View
Hello, everyone I have a question for confirmation about reduciton of graphene oxide in raman spectroscopy. I understood D peak and G peak in raman like as D band ~ SP3 carbon or defects on...
21 November 2019 3,984 3 View
Assume we talk about NMC-graphite cell. I know the reaction of graphite and NMC reactions but i do not know which elements' valance (or oxidation state) is changing during discharge or charge...
19 November 2019 9,241 4 View
We have seen major transformation due to the internet, self-driving electric cars, graphene and cryptocurrency. CERN is working on the time reversal... What is your prediction for the next...
19 November 2019 2,530 5 View
The paper, Surface Modification of Graphene Nanoplatelets by Organic Acids and Ultrasonic Radiation for Enhance Uremic Toxins Adsorption, only stated the ratio of acid but not the amount, how do I...
18 November 2019 3,604 3 View
Hello chemical friends, Does anybody knows a chemical etchant that could selectively etch away ZnS and Ge from graphite (C)? I couldn't find any simple answer to this question yet. Thanks for...
12 November 2019 1,777 2 View
I injected aqueous solution of Co(OAC)2.4H2O over my organic film and then it was dried in air oven at 130 C for 2 h. The XPS analysis of dried sample showed the presence of Co(III), Co(II) and...
11 November 2019 4,334 3 View
Why the two-dimensional crystals were considered unstable at a certain temperature according to the Landau and Peierls Thermodynamic law? And how the perception changed after the discovery of...
28 October 2019 2,831 2 View
To produce a battery cell, I need to calculate the quantities of materials (active material, binder, graphit) with ration 80:10:10. I want to calculate those quantities as mass but how to...
25 October 2019 8,457 3 View
We have an AA PG 500 with many problems: 1. The acetylene-air flame is not stable and it turn off after some minutes. 2. The acetylene-nitrous oxide flame is not stable and it turn off after some...
20 October 2019 8,233 2 View
HOPG is a good substrate for growth of h-BN. One major application of h-BN is single photon emission which can be used for telecom wavelength. Can anyone give me any insight about the absorption...
12 September 2019 6,582 1 View
I have a few questions about the difference between GO and rGO. 1. What is the differnce of the properties between GO and rGO? 2. How to reduce GO to rGO? If I just put GO in the furnace under...
09 September 2019 3,114 17 View
When you calculated the specific capacitance of the electrode, you have use the mass of the active area. My question is about if my electrode composition is PVA (used as binder) mixed with a...
05 September 2019 10,303 3 View
I am planning a sintering experiment for an Fe-Si system. I have a high temperature furnace with graphite heating elements. I am concerned if there's a risk of carbon pick up due to prolonged...
29 August 2019 3,183 1 View
As in case of capacitance calculation for super-capacitor the CV charge discharge method is popularly used. Can the similar method be implement to calculate the capacitance for graphene based...
28 August 2019 3,145 5 View
Hi, I am exfoliating graphite through high shear mixing in order to produce Graphene sheets. Is it possible for Graphene Sheets to have low surface area (around 78 m2/g)? Note that I measured the...
28 August 2019 4,312 3 View
I have synthesised the reduced-graphene oxide but i have no any special filter e.g.PTFE so, is there any easy technique to filter aqueous solution of rGO?if centrifugation is suitable so please...
24 August 2019 4,226 2 View
I assembeled half coin cells with graphite anode and lithium chip. The OCV of coin cell as assembeled was around 2 - 2.5 V (data based on more than 10 cells) and after fortmation cycles (3 cycles...
22 August 2019 6,766 2 View
I prepared platinum coated graphite and I made LSV test ,I found out that the current density was too high arround -8 mA/cm2,I want to know the reason behind that and what to do to fix it?
22 August 2019 7,510 3 View
The procedure was published by Akhavan et al. (2014). The link to their paper is here: Synthesis of graphene from natural and industrial carbonaceous wastes After the treatment, the mixture was...
18 August 2019 404 0 View