Fig. 3
From: Non-noble metal-nitride based electrocatalysts for high-performance alkaline seawater electrolysis
Oxygen and hydrogen evolution catalysis. a OER polarization curves in 1 M KOH, and b corresponding Tafel plots of different catalysts. c OER chronoamperometry curves of NiMoN@NiFeN at overpotentials of 277 and 337 mV in 1 M KOH. Inset: CV curves of NiMoN@NiFeN before and after the stability test. d HER polarization curves tested in 1 M KOH, and e corresponding Tafel plots of different catalysts. f HER chronoamperometry curves of NiMoN at overpotentials of 56 and 127 mV in 1 M KOH. Inset: LSV curves of NiMoN before and after the stability test. g OER and HER polarization curves of NiMoN@NiFeN and NiMoN, respectively, in different electrolytes. h Comparison of the overpotentials required to achieve current densities of 100, 500, and 1000 mA cm−2 for NiMoN@NiFeN (OER) and NiMoN (HER) in different electrolytes
