Superionic glass-ceramic electrolytes for room-temperature rechargeable sodium batteries
Superionic glass-ceramic electrolytes for room-temperature rechargeable sodium batteries
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DOI：
10.1038/ncomms1843
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发表时间：
2012-05-01
影响因子：
16.6
通讯作者：
Tatsumisago, Masahiro
中科院分区：
文献类型：
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作者：
Hayashi, Akitoshi;Noi, Kousuke;Tatsumisago, Masahiro
迫切需要开发能够有效储存太阳能和风能等可再生能源的创新可充电电池，以减少温室气体排放。具有无机固体电解质和电极的全固态电池由于其安全性、长循环寿命和多功能的几何形状而成为广泛应用的有前途的电源。可充电钠电池比锂离子电池更合适，因为它们使用丰富且无处不在的钠源。固体电解质是实现全固态钠电池的关键。在这里，我们表明，从玻璃态结晶的高温相的稳定显着提高了Na+离子电导率。首次实现了具有超离子导电性的立方相Na_3 PS_4晶体，在玻璃陶瓷电解质中获得了10 ~（-4）S·cm ~（-1）以上的室温电导率。全固态钠电池，采用粉末压缩的Na 3 PS4电解质，在室温下可作为可充电电池。
Innovative rechargeable batteries that can effectively store renewable energy, such as solar and wind power, urgently need to be developed to reduce greenhouse gas emissions. All-solid-state batteries with inorganic solid electrolytes and electrodes are promising power sources for a wide range of applications because of their safety, long-cycle lives and versatile geometries. Rechargeable sodium batteries are more suitable than lithium-ion batteries, because they use abundant and ubiquitous sodium sources. Solid electrolytes are critical for realizing all-solid-state sodium batteries. Here we show that stabilization of a high-temperature phase by crystallization from the glassy state dramatically enhances the Na+ ion conductivity. An ambient temperature conductivity of over 10(-4) S cm(-1) was obtained in a glass-ceramic electrolyte, in which a cubic Na3PS4 crystal with superionic conductivity was first realized. All-solid-state sodium batteries, with a powder-compressed Na3PS4 electrolyte, functioned as a rechargeable battery at room temperature.