Organic–inorganic hybrid electrolytes from ionic liquid-functionalized octasilsesquioxane for lithium metal batteries
Organic–inorganic hybrid electrolytes from ionic liquid-functionalized octasilsesquioxane for lithium metal batteries
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DOI：
10.1039/c7ta04599a
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发表时间：
2017-08
影响因子：
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通讯作者：
Guang Yang;Chalathorn Chanthad;H. Oh;I. Ayhan;Qing Wang
中科院分区：
文献类型：
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作者：
Guang Yang;Chalathorn Chanthad;H. Oh;I. Ayhan;Qing Wang
使用高导电性固态电解质取代传统的液态有机电解质，可以从根本上提高锂电池的可靠性、安全性和性能。在这里，我们报告了一类新的不燃固体电解质的合成和表征的基础上接枝的离子液体到八倍半硅氧烷。该电解质具有出色的室温离子电导率（≤ 4.8 × 10−4 S cm−1）、优异的电化学稳定性（相对于Li+/Li高达5 V）和高热稳定性。使用该电解质膜的全固态锂金属电池在室温下以高的库仑效率成功地循环。已经证明了电解质对锂的良好循环稳定性。本工作为室温锂电池用固体聚合物电解质的开发提供了一个新的平台。
The use of highly conductive solid-state electrolytes to replace conventional liquid organic electrolytes enables radical improvements in the reliability, safety and performance of lithium batteries. Here, we report the synthesis and characterization of a new class of nonflammable solid electrolytes based on the grafting of ionic liquids onto octa-silsesquioxane. The electrolyte exhibits outstanding room-temperature ionic conductivity (∼4.8 × 10−4 S cm−1), excellent electrochemical stability (up to 5 V relative to Li+/Li) and high thermal stability. All-solid-state Li metal batteries using the prepared electrolyte membrane are successfully cycled with high coulombic efficiencies at ambient temperature. The good cycling stability of the electrolyte against lithium has been demonstrated. This work provides a new platform for the development of solid polymer electrolytes for application in room-temperature lithium batteries.