Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 2, Pages 573-577Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201610211
Keywords
electrocatalysis; hydrogen evolution reaction; hollow nanostructures; oxide/hydroxide materials; oxygen evolution reaction
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Funding
- National Natural Science Foundation of China [51372212]
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Herein we report the control synthesis of lepidocrocite VOOH hollow nanospheres and further their applications in electrocatalytic water splitting for the first time. By tuning the surface area of the nanospheres, the optimal performance can be achieved with low overpotentials of 270 mV for the oxygen evolution reaction (OER) and 164 mV for the hydrogen evolution reaction (HER) at 10 mAcm(-2) in 1m KOH, respectively. Furthermore, when used as both the anode and cathode for overall water splitting, a low cell voltage of 1.62 V is required to reach the current density of 10 mAcm(-2), making the VOOH hollow nanospheres an efficient alternative to water splitting.
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