Renka Sanja, Klaser Teodoro, Burazer Sanja, Mošner Petr, Kalenda Petr, Šantić Ana, Moguš-Milanković Andrea
Ruđer Bošković Institute, 10000 Zagreb, Croatia.
Department of Physics, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia.
Nanomaterials (Basel). 2020 Dec 15;10(12):2515. doi: 10.3390/nano10122515.
High electronically conductive tungsten phosphate glass-ceramics have been prepared by the controlled crystallization of binary 60WO-40PO glass in the temperature range from 700 to 935 °C and for 1 to 24 h. The substantial increase in the conductivity for four orders of magnitude is a result of the formation of electronically conductive WO(PO) and WO phases. At low crystallization temperature the dominant WO(PO) phase is created, whereas at 935 °C for 24 h the formation of semiconducting WO crystallites of an average size of 80 nm enhances the conductivity to the highest value of 1.64 × 10 (Ω cm) at 30 °C. The course of the crystallization and its impact on this exceptionally high electronic transport of binary tungsten phosphate glass-ceramics has been discussed in detail. Since such highly electronically conductive WO-based glass-ceramics have a great potential as cathode/anode materials in solid state batteries and as electrocatalysts in fuel cells, it is of interest to provide a novel insight into the improvement of their electrical properties.
通过在700至935°C的温度范围内对二元60WO-40PO玻璃进行1至24小时的控制晶化，制备出了高电子导电性的磷酸钨玻璃陶瓷。电导率大幅提高四个数量级是由于形成了电子导电的WO(PO)相和WO相。在低晶化温度下会形成占主导的WO(PO)相，而在935°C下晶化24小时时，平均尺寸为80纳米的半导体WO微晶的形成将电导率提高到30°C时的最高值1.64×10（Ω·cm）。详细讨论了晶化过程及其对二元磷酸钨玻璃陶瓷这种异常高的电子传输的影响。由于这种高电子导电性的WO基玻璃陶瓷在固态电池中作为阴极/阳极材料以及在燃料电池中作为电催化剂具有巨大潜力，因此深入了解其电学性能的改善具有重要意义。
