I have terminals attached to a battery, which will conduct high-current (40A to 200A), and these are copper plates. As the plates, and battery terminals are not perfectly even (even if they appear to), just squeezing the contact with a screw won't make the most contact surface as I can get.
Is there some sort of semi-liquid paste, grease, spray or something of similar consistence that I can put between the plates before I squeeze them together to improve the contact area and so improve high-current flow through the contact?
There are thermo-conductive pastes that you put under the fan of the CPU to improve heat flow, as there similar pastes for improving electricity conductivity?
I have been searching to find some, but was unsuccessful, maybe I don't know the right keywords. What kind of pastes I should look for? With copper, silver or graphite? What would be the best?
There are some copper pastes, but they are sold as a lubricant for high temperature applications, for breaks, etc. I am not looking for a lubricant, these plates won't move, I am looking just to improve battery electrical contact. There is also graphite spray, which is said to give electrical conductivity to any surface, meant to be used for applying electrical conductivity to the outside of devices to prevent electrostatic damage, but is that the best thing I could use for my application, considering that none of them listed improving high-current battery contact as a possible application?
I just find it strange that I couldn't find any product which has listed improving a high-current battery contact electrical connection, and it'd seem that'd be a pretty common and useful application, i.e. car batteries?
There is also silver glue, which is meant to be used for repairing circuit boards, but I don't want to glue this thing together, I just want some paste/grease.