Explain why diamonds are useful for electrodes in batteries

Diamonds have a broader potential window of 3 to 5 volts.

Explanation:

The minimum voltage required for electrolysis is called potential window. Electrodes such as titanium electrodes and those made of noble metals have a potential window of about 2 volts. Diamond has a potential window of 3 to 5 volts that makes it preferentially start a redox reaction of a substance that is difficult to electrolyze. This facilitates electrolysis of substance that were difficult to decompose in normal electrochemical systems.

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.