Abstract
Hydrothermally grown tungsten trioxide coatings were prepared at 95°C using different metal sulfates. Morphology of the oxides was altered from grains to flower- and urchin-like structures using potassium sulfate, sodium sulfate and lithium sulfate, respectively. The flower-like structures presented the highest deintercalated charge, 35mCcm−2 with time response of 96s. In addition, they indicated a charge transfer resistance across the tungsten trioxide–electrolyte interface of 752Ω. These outcomes imply that they are promising candidates for electroactive applications.
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