Stability and decomposition pathways of the NiOOH OER active phase of NiO<sub>x</sub> electrocatalysts at open circuit potential traced by <i>ex situ</i> and <i>in situ</i> spectroscopies
Julia Gallenberger, Harol Moreno Fernández, Achim Alkemper, Mohan Li, Chuanmu Tian, Bernhard Kaiser, Jan P. Hofmann
Abstract
The OER active phase of NiOx electrocatalysts, i.e. NiOOH, decomposes outside operating potential to Ni(OH) 2 requiring operando characterization approaches.
Topics & Concepts
Non-blocking I/OIn situOpen-circuit voltageCatalysisDecompositionChemistryPhase (matter)Chemical engineeringCharacterization (materials science)Materials scienceNanotechnologyEngineeringVoltageOrganic chemistryElectrical engineeringElectrocatalysts for Energy ConversionElectrochemical Analysis and ApplicationsAdvanced Memory and Neural Computing