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Questions related from Turan Ilhan
Actually i wonder whether NMC811 is more conductive than lets say NMC523, or vice versa. Can we say as nickel content increase, powder conductivity decreases or increases? thanks in advance
13 January 2022 2,671 1 View
I want to synthesize cobalt substutite alpha nickel hydroxide from Ni(II).(NO3)2 and Co(II).(NO3)2 precursor by increasing solution's pH. During the precipitation reaction, anions in the solution...
23 April 2021 2,125 2 View
Electrolyte is KOH and counter electrode cadmium or metal hydride. Usually PTFE emulsion is used as binder for this system but i want to use SBR, is there any problem with SBR emulsion. Thanks in...
06 December 2020 8,008 0 View
Hi, I need to analyze some nuts and screw, they are copper alloy coated by nickel and some of them steel. If i cut the material by laser cutting, can i get reliable information from eds and sem?...
28 May 2020 2,260 6 View
Hi, I am confused with basics of electrochemistry. Suppose i immersed a metal to an acidic solution and i measure electrode potential, in other words potential differences between metal and...
18 May 2020 9,581 3 View
We see that Ni-Cd Batteries is still used in railways it is not replaced by Ni-Mh or LIB. What make Ni-Cd special for railways? Thanks in advance
08 December 2019 1,896 2 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 9,244 4 View
Alpha Ni(OH)2 is not stable in alkaline environment, peope dopes Ni(OH)2 with Cobalt or Aluminum (or other trivalent cations) to synthesise stable alpha-Ni(OH)2. What is the mechanism for chemical...
04 November 2019 7,058 0 View
I am working on Lithium ion modeling. In the charge balance of solid Cai et. al uses differential form of Ohm's law as can be seen picture. What is the physical meaning of this equation?...
07 September 2019 5,698 2 View
Hi, I want to measure polarization of single electrode of Ni-Cd system by using Gamry's potentiostat. Which technique i should apply for it. I am working on positive electrode, not whole cell. So...
25 December 2018 7,521 6 View
It is know that pvdf is not stable in alkaline environment but in literatüre i saw that, some use pvdf binder for ni-mh batteries. Why they use pvdf or may may knowledge about pvdf-alkaline...
13 November 2018 9,855 4 View
In aqueous media, i convert nickel nitrate to nickel hydroxide for coating. I use porous nickel plate as cathode, under cathodic current nickel plate is coated with Ni(OH)2. I want to calculate...
31 October 2018 1,513 3 View
In the sintered type nickel cadmium batteries, the plaque has black colour, i remove the impregnated outer layer (which contains nickel hydroxide and other additives. I remove this layer by...
12 September 2018 4,742 2 View
I perform OCP measurement both voltmeter and potentiostat (2 electrodes technique). Sometimes it takes too many times to reach stable OCP. I am wondering "what is the reaching equilibrium in terms...
07 August 2018 8,804 2 View
How can i understand which ions oxidize or reduze in which voltage. To make the topic more solid, lets go on the example of nickel coating i perform. I perform nickel coating in Watts Bath with...
02 June 2018 7,660 3 View
In the process watt solution is used and sulphur containing additives (brigther&carriers) are also added. It is known that carrier supply sulphur into coating. but i wonder whether this...
16 April 2018 8,938 2 View
Usually platinum is used as counter electrode, and sometimes i see silver and gold are also used as counter electrode. Actually i want to ask what is main parameter(s) for selection of counter...
18 December 2017 7,319 4 View
