There is need to develop high energy storage devices with high safety to satisfy the growing industrial demands. Here, we show the potential to realize such batteries by assembling a lithium-oxygen cell using an inorganic solid electrolyte without any flammable liquid or polymer materials. The lithium-oxygen battery using Li1.575Al0.5Ge1.5(PO4)3 solid electrolyte was examined in the pure oxygen atmosphere from room temperature to 120 °C. The cell works at room temperature and first full discharge capacity of 1420 mAh g−1 at 10 mA g−1 (based on the mass of carbon material in the air electrode) was obtained. The charge curve started from 3.0 V, and that the majority of it lay below 4.2 V. The cell also safely works at high temperature over 80 °C with the improved battery performance. Furthermore, fundamental data of the electrochemical performance, such as cyclic voltammogram, cycle performance and rate performance was obtained and this work demonstrated the potential of the all-solid-state lithium-oxygen battery for wide temperature application as a first step.
展开▼
机译：需要开发具有高安全性的高能量存储装置以满足日益增长的工业需求。在这里，我们展示了通过使用无机固体电解质组装锂氧电池而没有任何易燃液体或聚合物材料来实现这种电池的潜力。使用Li1.575Al0.5Ge1.5（PO4）3固体电解质的锂氧电池在室温至120°C的纯氧气氛中进行了测试。电池在室温下工作，在10 mA g -1 时的首次完全放电容量为1420 mAh g -1 （基于空气电极中碳材料的质量）获得了。充电曲线从3.0 V开始，大部分处于4.2 V以下。该电池还可以在80 C的高温下安全工作，并改善了电池性能。此外，获得了电化学性能的基本数据，例如循环伏安图，循环性能和倍率性能，这项工作证明了第一步，全固态锂氧电池在宽温度下的应用潜力。
展开▼
