Microwave-assisted synthesis and electrochemical evaluation of VO2 (B) nanostructures.
Microwave-assisted synthesis and electrochemical evaluation of VO2 (B) nanostructures.
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DOI：
10.1107/s2052520615021289
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
T. Ashton;David Hevia Borrás;A. Iadecola;K. Wiaderek;P. Chupas;K. Chapman;S. Corr
中科院分区：
文献类型：
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作者：
T. Ashton;David Hevia Borrás;A. Iadecola;K. Wiaderek;P. Chupas;K. Chapman;S. Corr
了解插层材料在电化学操作过程中如何变化对于优化其行为和功能至关重要，原位表征方法使我们能够在不破坏样品的情况下观察这些变化。在这里，我们首先报告了改进的嵌入性能的青铜相二氧化钒VO 2（B）通过微波辅助的路线，表现出更大的电化学容量（232 mAh g（-1））相比，VO 2（B）通过溶剂热路线（197 mAh g（-1））制备。这些电化学差异也被跟踪使用原位X射线吸收光谱，使我们能够跟踪氧化态的变化，因为它们发生在电池运行过程中。
Understanding how intercalation materials change during electrochemical operation is paramount to optimizing their behaviour and function and in situ characterization methods allow us to observe these changes without sample destruction. Here we first report the improved intercalation properties of bronze phase vanadium dioxide VO2 (B) prepared by a microwave-assisted route which exhibits a larger electrochemical capacity (232 mAh g(-1)) compared with VO2 (B) prepared by a solvothermal route (197 mAh g(-1)). These electrochemical differences have also been followed using in situ X-ray absorption spectroscopy allowing us to follow oxidation state changes as they occur during battery operation.