Kim Young Jin, Marschilok Amy C, Takeuchi Kenneth J, Takeuchi Esther S
Department of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York, 14260, USA.
J Power Sources. 2011 Aug 15;196(16):6781-6787. doi: 10.1016/j.jpowsour.2010.10.054.
Recently, we have shown silver vanadium phosphorous oxide (Ag(2)VO(2)PO(4), SVPO) to be a promising cathode material for lithium based batteries. Whereas the first reported preparation of SVPO employed an elevated pressure, hydrothermal approach, we report herein a novel ambient pressure synthesis method to prepare SVPO, where our chimie douce preparation is readily scalable and provides material with a smaller, more consistent particle size and higher surface area relative to SVPO prepared via the hydrothermal method. Lithium electrochemical cells utilizing SVPO cathodes made by our new process show improved power capability under constant current and pulse conditions over cells containing cathode from SVPO prepared via the hydrothermal method.
最近，我们已证明银钒磷氧化物（Ag₂VO₂PO₄，SVPO）是一种很有前景的锂基电池阴极材料。虽然首次报道的SVPO制备方法采用了高压水热法，但我们在此报告一种制备SVPO的新型常压合成方法，其中我们的温和化学制备方法易于扩大规模，并且与通过水热法制备的SVPO相比，所提供材料的粒径更小、更均匀，表面积更大。使用我们新工艺制备的SVPO阴极的锂电化学电池在恒流和脉冲条件下比含有通过水热法制备的SVPO阴极的电池表现出更高的功率性能。
