Silver Vanadium Phosphorous Oxide, Ag(2)VO(2)PO(4): Chimie Douce Preparation and Resulting Lithium Cell Electrochemistry.

Silver Vanadium Phosphorous Oxide, Ag(2)VO(2)PO(4): Chimie Douce Preparation and Resulting Lithium Cell Electrochemistry.
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DOI:
10.1016/j.jpowsour.2010.10.054
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发表时间:
2011-08-15
影响因子:
9.2
通讯作者:
Takeuchi, Esther S.
Takeuchi, Esther S.
中科院分区:
工程技术2区
文献类型:
--
作者:
Kim, Young Jin;Marschilok, Amy C.;Takeuchi, Kenneth J.;Takeuchi, Esther S.

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最近,我们已经表明银钒磷氧化物(Ag2VO2PO4,SVPO)是一种有前途的锂基电池阴极材料。鉴于第一次报道的SVPO的制备采用了高压水热方法,我们在本文中报道了一种制备SVPO的新的环境压力合成方法,其中我们的chimie douce制备是容易规模化的,并且提供了相对于通过水热方法制备的SVPO具有更小、更一致的粒度和更高表面积的材料。利用由我们的新工艺制成的SVPO阴极的锂电化学电池在恒定电流和脉冲条件下显示出比含有通过水热方法制备的来自SVPO的阴极的电池更高的功率容量。
Recently, we have shown silver vanadium phosphorous oxide (Ag2VO2PO4, 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.
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