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Integrated Interface Strategy toward Room Temperature Solid-State Lithium Batteries
DOI:10.1021/acsami.8b02240.png)
摘要
En 中文
固态锂电池为解决动力电池的安全问题而受到广泛关注。然而,固态锂电池的发展基本上受到源自固体电极和固态电解质之间的刚性界面的差的电化学性能的限制。在这项工作中,通过原位聚合成功制备了聚 (碳酸乙烯酯) 和Li10SnP2S12固态电解质的复合材料,以改善刚性界面问题。复合电解质的室温电导率为0.2 mS cm(-1),电化学窗口超过4.5 V,Li迁移数为0.6。已证明,LiFe0.2Mn0.8PO4 (LFMP)/复合电解质/Li的固态锂金属电池可以提供130 mA h g(-1) 的高容量,并且在140次循环后具有相当大的88% 容量保持率和超过99% 的库仑效率在室温下为0.5 C。优异的电化学性能可以归因于复合电解质与Li金属的良好相容性以及通过原位聚合设计的固体电极与复合电解质之间的完整相容界面,这导致在固态li-li对称电池中从1292到213 Omeg 1厘米 (2) 的界面阻抗显着降低。该工作为改善室温固态锂电池的界面相容性提供了重要参考。
Keyword:
solid-state lithium batteries
interface compatibility
sulfide solid electrolyte
poly(vinyl carbonate)
in situ polymerization
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期刊
IF:
8.2
论文数:
6.1W
被引数:
38.7W
机构
引用论文
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NANO LETTERS
IF9.1
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ADVANCED MATERIALS
IF26.8
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ADVANCED SCIENCE
IF14.1
High-voltage and free-standing poly(propylene carbonate)/Li6.75La3Zr1.75Ta0.25O12 composite solid electrolyte for wide temperature range and flexible solid lithium ion battery用于宽温度范围和柔性固体锂离子电池的高压和独立式聚 (碳酸丙二酯)/Li6.75La3Zr1.75Ta0.25O12复合固体电解质
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