Facile synthesis of rod-like Ag_0.33V₂O₅ crystallites with enhanced cyclic stability for lithium batteries

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• 作者：Shuquan Liang ; Ya Yu ; Tao Chen ; Anqiang Pan ; Shuaidi Zhang ; Jiang Zhou ; Yan Tang ; Xiaoping Tan
• 关键词：Energy storage and conversion ; Nanoparticles ; Silver vanadium oxides ; Cathode material ; Lithium-ion batteries
• 刊名：Materials Letters
• 出版年：2013
• 出版时间：15 October, 2013
• 年：2013
• 卷：109
• 期：Complete
• 页码：92-95
• 全文大小：1255 K

文摘

Silver vanadium oxide (SVO, Ag_0.33V₂O₅) was synthesized in solid-state reactions from silver nitrite (AgNO₃) and the sol-gel prepared vanadyl citrate (VO(C₆H₆O₇)). The formation mechanism of Ag_0.33V₂O₅ was elucidated by thermal gravimetric analysis (TG) and differential scanning calorimetry (DSC) methods. The formation of Ag_0.33V₂O₅ went through two step decomposition and combination processes. The morphology and the crystallinity of the calcination products were largely temperature dependent. The electrochemical performance of Ag_0.33V₂O₅ cathode material was superior to many other silver vanadium oxides, which were attributed to their nanosized particles and the good structural reversibility upon cycling.