There is a formula as m+/m-=c-v-/c+v+, but how can it be made without having the mass and capacity of the negative electrode? To make the positive electrode, I use 4 mg of active material, 1 mg of pvdf and 1 mg of carbon black, and I make a few drops of nmp and Ultra Sonic it, and then pour it on nickel foam and dry it. For the negative electrode, I use a carbon derivative instead of the active material. the process is the same as making the positive electrode? I would be happy if someone could share with me the method of making the two-electrode system.
Zeynab Molaei The formula m+/m- = c-v-/c+v+ is a theoretical guideline for mass balancing, but practical adjustments are needed based on electrode materials and testing results. The negative electrode is made from a carbon derivatives such as Activated carbon (AC), carbon nanotubes (CNTs), graphene, and graphene oxide (GO) with high specific surface area, and a slurry is prepared by mixing it with PVDF, carbon black, and NMP. The slurry is applied to a nickel foam substrate, dried, and assembled.
@Alvena-shahid
Thanks for your attention.
About separator, Does it have to be very thick? Is it necessary to use a current collector when the material is on nickel foam?
Zeynab Molaei The thickness of a separator is crucial for its mechanical strength and electrolyte retention, but it doesn't have to be excessively thick. Going thicker can make things better, but it might also bring in more resistance. The use of a current collector with nickel foam depends on the electrochemical setup, enhancing conductivity and electron transfer.
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