A ceramic/polymer composite solid electrolyte for sodium batteries
A ceramic/polymer composite solid electrolyte for sodium batteries
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DOI：
10.1039/c6ta07590h
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发表时间：
2016-10
影响因子：
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通讯作者：
Zhizhen Zhang;Qiangqiang Zhang;C. Ren;F. Luo;Q. Ma;Yong‐Sheng Hu;Zhibin Zhou;Hong Li;Xuejie Hu
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文献类型：
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作者：
Zhizhen Zhang;Qiangqiang Zhang;C. Ren;F. Luo;Q. Ma;Yong‐Sheng Hu;Zhibin Zhou;Hong Li;Xuejie Hu
在固体电解质中实现高离子电导率，降低固体电解质与电极材料之间的界面电阻，被认为是开发固态电池的最大挑战之一。首次尝试将无机陶瓷的高离子电导率和有机聚合物的柔性相结合，制备出一种用于钠电池的无溶剂陶瓷/聚合物复合固体电解质。该复合固体电解质在80 °C下表现出高达2.4 mS cm−1的Na+离子电导率。同时，这种复合膜在高达150 °C的温度下是热稳定的，并保持了聚合物电解质的柔性。使用该陶瓷/聚合物复合电解质的固态Na 3V 2（PO 4）3/CPE/Na电池表现出106.1 mA h g-1的初始可逆容量和优异的循环性能，在120次循环中容量损失可忽略不计。
Achieving high ionic conductivity in solid electrolytes and reducing the interfacial resistance between solid electrolytes and electrode materials are considered to be one of the biggest challenges in developing solid-state batteries. The integration of the high ionic conductivity of inorganic ceramics and the flexibility of organic polymers was attempted to yield a solvent-free ceramic/polymer composite solid electrolyte for Na batteries for the first time. The composite solid electrolytes exhibit a Na+ ion conductivity as high as 2.4 mS cm−1 at 80 °C. Meanwhile, this composite membrane is thermally stable up to 150 °C and maintains the flexibility of polymer electrolytes. The solid-state Na3V2(PO4)3/CPE/Na battery using this ceramic/polymer composite electrolyte exhibits an initial reversible capacity of 106.1 mA h g−1 and excellent cycle performance with negligible capacity loss over 120 cycles.