Research Centre Juelich, Electronic Materials (PGI-7), 52425 Juleich, Gemany.
Nanoscale. 2016 Aug 7;8(29):13828-37. doi: 10.1039/c6nr01383j. Epub 2016 May 6.
It is now well known that at the nanoscale matters behave differently compared to bulk phases. Increased reactivity, deviations in structural, thermodynamic and kinetic properties make nanoscale materials and processes attractive for both fundamental research and applications. Here we show that nanometer thin films of materials with dielectric properties at the macroscopic level such as SiO2, Ta2O5 and HfO2 behave as solid electrolytes and exhibit evident ionic transport and electrochemical redox reactions. Experimental studies demonstrate that classical electrochemical potentiodynamic and steady state methods can be used to study the mass and charge transport at the nanoscale. We believe these reported properties of nanomatter open new opportunities for fundamental research and applications.
现在人们已经熟知，相比于体相，纳米尺度下物质的行为会有所不同。增加的反应活性、结构、热力学和动力学性质的偏离使得纳米材料和过程在基础研究和应用方面都极具吸引力。在这里我们展示了具有介电性质的宏观材料的纳米薄膜，如 SiO2、Ta2O5 和 HfO2，其表现出固体电解质的特性，并显示出明显的离子输运和电化学氧化还原反应。实验研究表明，可以使用经典的电化学动电位和稳态方法来研究纳米尺度下的质量和电荷输运。我们相信纳米物质的这些已报道的性质为基础研究和应用开辟了新的机会。
