Synthetic control of composition and crystallite size of silver hollandite, Ag(x)Mn8O16: impact on electrochemistry.
Synthetic control of composition and crystallite size of silver hollandite, Ag(x)Mn8O16: impact on electrochemistry.
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DOI：
10.1021/am301443g
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发表时间：
2012-10-24
影响因子：
9.5
通讯作者：
Takeuchi, Esther S.
中科院分区：
文献类型：
--
作者：
Takeuchi, Kenneth J.;Yau, Shali Z.;Menard, Melissa C.;Marschilok, Amy C.;Takeuchi, Esther S.
关键词：
对银荷兰石AgxMn8O16的银含量进行了人工控制，银含量范围为1.0≤×≤1.8。与更常见的水热法相比，这种水平的成分控制是通过开发更低温度的回流合成来实现的。值得注意的是，银含量的合成变化伴随着晶体尺寸、表面积和粒度的变化。为了验证荷兰石结构的保留，在不同成分的样品上进行了第一次对银荷兰石的Rietveld分析。通过循环伏安法和电池测试，考察了银含量、晶粒尺寸、表面积和粒径对电化学可逆性的影响。
Synthetic control of the silver content in silver hollandite, AgxMn8O16, where the silver content ranges from 1.0 ≤ × ≤ 1.8 is demonstrated. This level of compositional control was enabled by the development of a lower temperature reflux based synthesis compared to the more commonly reported hydrothermal approach. Notably, the synthetic variance of the silver content was accompanied by a concomitant variance in crystallite size as well as surface area and particle size. In order to verify the retention of the hollandite structure, the first Rietveld analysis of silver hollandite was conducted on samples of varying composition. The impacts of silver content, crystallite size, surface area, and particle size on electrochemical reversibility were examined under cyclic voltammetry and battery testing.
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