Uniform Cu3(OH)2V2O7·2H2O microspheres assembled by nanorods have been fabricated through a simple hydrothermal method for the first time employing copper hydroxide carbonate (Cu2(OH)2CO3) as copper source without the assistance of any template or surfactant. The formation mechanism was proposed based on the evolution of this morphology as a function of hydrothermal time. The Electrochemical measurements revealed that the Cu3(OH)2V2O7·2H2O microspheres displayed a high discharge capacity, which indicates that the Cu3(OH)2V2O7·2H2O microspheres are promising cathode candidates for primary lithium batteries used in long term implantable cardioverter defibrillators (ICD).
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