"High Performance MoxN electrode Deposited By SPPS"

Electrochemical capacitors exhibit high capacitance because they store electrical charge via redox surface phenomena in addition to electrical double layers. The redox reactions are facilitated by transition metal oxide or nitride electrodes. One of the most promising candidates in the transition metal family is Mo₂N, which shows high capacitance and is cost effective due to molybdenum’s high abundance compared with other potential materials. A high surface area molybdenum nitride electrode has been developed by solution precursor plasma spraying (SPPS) which demonstrated high capacitance and stability in high cycle cyclic voltammetry testing.  The electrode capacitance was 62.4 mF cm^-2 while the reduction in capacitance was 28% over 5000 cycles. However, after an initial reduction in capacitance, the reduction was only 8.5% from 1000 to 5000 cycles. This indicates that SPPS is an effective and robust deposition method for Mo_xN electrodes for supercapacitor application capable competing with other fabrication systems.