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a) X‐ray diffractograms registered for NiFe‐LDH (black) and NiFe‐LDH after immersion for 60 h in 1.0 m KOH at 25 °C (blue) and 7.5 m KOH at 80 °C (red) (• NiFe CO3 2−, ▪ β‐Ni(OH)2). b) Linear sweep voltammograms for NiFe‐LDH (black) and NiFe‐LDH after immersion for 60 h in 1.0 m KOH at 25 °C (blue) and 7.5 m KOH at 80 °C (red) registered at a scan rate of 5 mV s−1 and 1600 rpm. Taken from Ref. [DOI: https://doi.org/10.1002/chem.201803165] with permission of the publisher, Wiley‐VCH.
