TY  - JOUR
A1  - Heinekamp, Christian
A1  - Roy, Arkendu
A1  - Karafiludis, Stephanos
A1  - Kumar, Sourabh
A1  - de Oliveira Guilherme Buzanich, Ana
A1  - Stawski, Tomasz M.
A1  - Miliūtė, Aistė
A1  - von der Au, Marcus
A1  - Ahrens, Mike
A1  - Braun, Thomas
A1  - Emmerling, Franziska
T1  - Zirconium fluoride-supported high-entropy fluoride: a catalyst for enhanced oxygen evolution reaction
JF  - Journal of Materials Chemistry A
N2  - Extended hydrogen initiatives promote the urgency of research on water splitting technologies and, therein, oxygen evolution reaction catalysts being developed. A route to access a ZrF4 supported high-entropy fluoride catalyst using a facile sol–gel route is presented. The high-entropy character of the catalyst was confirmed by scanning transmission electron microscopy and energy dispersive X-ray spectroscopy (STEM-EDX) as well as inductively coupled plasma-mass spectrometry (ICP-MS). Additional investigations on the local structure were performed using extended X-ray absorption fine structure spectroscopy (EXAFS) and pair distribution function (PDF) analysis. The catalyst shows significant potential for oxygen evolution reaction (OER) in alkaline media with a current density of 100 mA cm−2 at approximately 1.60 V, thus outperforming benchmark materials such as IrO2, despite a significant reduction in electrochemical mass loading. A potential mechanism is suggested based on free energy calculation using DFT calculations.
KW  - OER
KW  - HEA
KW  - CCMAT
PY  - 2025
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:b43-637116
DO  - https://doi.org/10.1039/D4TA08664C
SN  - 2050-7488
VL  - 13
IS  - 26
SP  - 20383
EP  - 20393
PB  - Royal Society of Chemistry (RSC)
AN  - OPUS4-63711
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -