Data for High pressure high temperature synthesis of highly boron doped diamond microparticles and porous electrodes for electrochemical applications

This is aided through the use of a metal (Fe–Ni) carbide forming catalyst and an aluminum diboride (AlB2) boron source. The latter also acts as a nitrogen sequester, to reduce boron-nitrogen charge compensation effects.

Raman microscopy and electrochemical measurements on individual microparticles reveal they are doped to metal-like levels, contain negligible sp2 bonded carbon and display a large aqueous solvent window. A HPHT compaction process is used to create macroscopic porous electrodes from the BDD microparticles. Voltammetric analysis of the one-electron reduction of Ru(NH3)6 3+ is used to identify the fundamental electrochemical response, revealing large capacitive and resistive components to the current-voltage curves, originating from solution trapped within the porous material.