Journal
ADVANCED MATERIALS INTERFACES
Volume 5, Issue 4, Pages -Publisher
WILEY
DOI: 10.1002/admi.201701056
Keywords
electrocatalyst; flexible electrode; supercapattery; water splitting
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Evolution of 3D nanostructures is luring a great deal of importance owing to their eccentric structures that create plenty of rooms to grasp massive volume of charges. Here, a distinct multifunctional binder-free flexible electrode is developed by arrays of flower-like beta-NiS nanostructures over flexible carbon cloth (beta-NiS@CC) by the in situ hydrothermal method. It unveils an ultimate areal capacity of 1.654 C cm(-2) (827 C g(-1)) at 1 mA cm(-2), which seems to be the highest among the reported NiS so far. The fabricated flexible supercapattery gadget delivers a remarkable energy density of 38 mu Wh cm(-2) at a power density of 800 mu W cm(-2). Due to immense mechanical strength and resilience of 3D flower-like morphology, it is further exposed as an economical bifunctional electrocatalyst. Both oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) exhibit a significant burst of the enormous quantity of gas bubbles at the low overpotentials of 320 and 278 mV, respectively, to achieve a current density of 20 mA cm(-2). Further, the developed laboratory scale water electrolyzer offers a low cell voltage of 1.65 V to accomplish a water-splitting current density of 10 mA cm(-2). Henceforth, the multifunctional 3D flower-like beta-NiS electrode is demonstrated by defining its potential use in real-world appliances.
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