I want to test pencils of different grades (i.e different carbon content H,2H,3H,4H,5H...B,2B,3B,4B,5B...AND HB) as electrodes. The OCP which I got is not following trend. Can anybody help in this regard.
Pencil leads have various additives in them. there are some papers out there already on this. See: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwja3dSZlpzOAhUMxoMKHR6VBiUQFggkMAE&url=http%3A%2F%2Fwww.mdpi.com%2F1424-8220%2F15%2F8%2F18887%2Fpdf&usg=AFQjCNEk4gCqkhVk9XujS3aQWVJUAg3J5g&sig2=ocBqfTdIOZXQVDF57Xw9lQ&bvm=bv.128617741,d.amc And related papers.