The first stackexchange link I see answers the question of thermal conductivity, not electrical. Google is convinced I didn’t actually mean electrical. Forcing it to include electrical brings up nothing of use.
The Google AI summary suggests MLV which is wrong.
ChatGPT suggests using copper which is also wrong.
A material that is both electrically conductive and good at blocking sound is:
Lead (Pb)
• Electrical conductivity: Lead is a metal, so it conducts electricity, although it’s not the most conductive (lower than copper or silver).
• Sound blocking: Lead is excellent at blocking sound due to its high density and mass, which help attenuate airborne sound effectively.
Other options depending on application:
Composite materials:
• Metal-rubber composites or metal-polymer composites can be engineered to conduct electricity (via embedded conductive metal layers or fillers) and block sound (due to the damping properties of the polymer/rubber layer).
Graphene or carbon-filled rubber:
• Electrically conductive due to graphene/carbon content.
• Sound damping from rubber base.
• Used in some specialized industrial or automotive applications.
Let me know if you need it optimized for a specific use case (e.g., lightweight, flexible, non-toxic).
I have a prompt personalization that says im a scientist / engineer. Perhaps thats why it gave me a better answer. If you consider the multitude of contexts you could ask this question it makes sense to give it a little personal background.
The Google AI summary suggests MLV which is wrong.
ChatGPT suggests using copper which is also wrong.
I call bullshit on the entire affair.