Conductive Diamond for Electrochemical Energy Applications

Conductive diamonds, especially boron‐doped diamonds, own unique advantages over other sp² nano‐carbon materials. For example, diamond electrodes possess wide electrochemical potential window, low and stable background current, high mechanical and chemical stability, various surface terminations and rich surface chemistry, etc. They have thus been recognized as promising electrodes or electrode supports for various electrochemical applications, including energy storage and conversion, as well as electrocatalysis. In this chapter, recent progresses of conductive diamonds in the areas of supercapacitors, batteries, fuel cells, solar cells and CO₂ conversion, etc. are summarized. Challenges for those applications are outlined and discussed, followed by the discussion on several potential directions for future studies.