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Composite electrolytes of polyethylene oxides/garnets interfacially wetted by ionic liquid for room-temperature solid-state lithium battery
Huo, Hanyu1,2; Zhao, Ning3; Sun, Jiyang1,2; Du, Fuming1,2; Li, Yiqiu1; Guo, Xiangxin1
2017
发表期刊Journal of Power Sources
ISSN03787753
卷号372页码:1-7
摘要Paramount attention has been paid on solid polymer electrolytes due to their potential in enhancement of energy density as well as improvement of safety. Herein, the composite electrolytes consisting of Li-salt-free polyethylene oxides and 200 nm-sized Li6.4La3Zr1.4Ta0.6O12particles interfacially wetted by [BMIM]TF2N of 1.8 μL cm−2have been prepared. Such wetted ionic liquid remains the solid state of membrane electrolytes and decreases the interface impedance between the electrodes and the electrolytes. There is no release of the liquid phase from the PEO matrix when the pressure of 5.0 × 104Pa being applied for 24 h. The interfacially wetted membrane electrolytes show the conductivity of 2.2 × 10−4S cm−1at 20 °C, which is one order of magnitude greater than that of the membranes without the wetted ionic liquids. The conduction mechanism is related to a large number of lithium ions releasing from Li6.4La3Zr1.4Ta0.6O12particles and the improved conductive paths along the ion-liquid-wetted interfaces between the polymer matrix and ceramic grains. When the membranes being used in the solid-state LiFePO4/Li and LiFe0.15Mn0.85PO4/Li cells at 25 °C, the excellent rate capability and superior cycle stability has been shown. The results provide a new prospect for solid polymer electrolytes used for room-temperature solid-state lithium batteries. © 2017 Elsevier B.V.
DOI10.1016/j.jpowsour.2017.10.059
EI入藏号20174304310877
EI主题词Polyelectrolytes
EI分类号702.1.1 Primary Batteries - 801.4 Physical Chemistry - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 815.1.1 Organic Polymers - 931 Classical Physics ; Quantum Theory ; Relativity - 932 High Energy Physics ; Nuclear Physics ; Plasma Physics
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/25614
专题中国科学院上海硅酸盐研究所
作者单位1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China;
3.College of Physics, Qingdao University, Qingdao; 266071, China
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GB/T 7714
Huo, Hanyu,Zhao, Ning,Sun, Jiyang,et al. Composite electrolytes of polyethylene oxides/garnets interfacially wetted by ionic liquid for room-temperature solid-state lithium battery[J]. Journal of Power Sources,2017,372:1-7.
APA Huo, Hanyu,Zhao, Ning,Sun, Jiyang,Du, Fuming,Li, Yiqiu,&Guo, Xiangxin.(2017).Composite electrolytes of polyethylene oxides/garnets interfacially wetted by ionic liquid for room-temperature solid-state lithium battery.Journal of Power Sources,372,1-7.
MLA Huo, Hanyu,et al."Composite electrolytes of polyethylene oxides/garnets interfacially wetted by ionic liquid for room-temperature solid-state lithium battery".Journal of Power Sources 372(2017):1-7.
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