{'fraction_non_alphanumeric': 0.038177339901477834, 'fraction_numerical': 0.017241379310344827, 'mean_word_length': 5.112781954887218, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
On the Hydrogen Evolution Reaction at Nickel-Coated Carbon Fibre in 30 wt. % KOH Solution

The present paper reports an electrochemical study of hydrogen evolution reaction (HER), at commercially available (Toho-Tenax) nickel-coated carbon fibre (NiCCF) material, in 30 wt.% KOH solution. Kinetics of the hydrogen evolution reaction at NiCCF were studied for prolonged time, over the temperature range 22-60 o C, where the kinetic parameters were derived by means of a.c. impedance spectroscopy for the cathodic overpotential range: -100 to -500 mV/RHE. The effects of cathode deactivation (the result of reversible formation of nickel hydride species) upon continuous electrolysis and its reactivation by dissolved molybdenum (introduced to solution in the form of sodium molybdate) have also been investigated.