A solid-liquid composite electrolyte with a vertical microporous Li1.5Al0.5Ge1.5(PO4)3 skeleton that prepared by femtosecond laser structuring and filled with ionic liquid

被引：6

作者：

Yan, Binggong ^{[1
]}

Qu, Yang ^{[1
]}

Ren, Hongliang ^{[2
]}

Lu, Xizhao ^{[1
]}

Wang, Zhen ^{[1
]}

Liu, Weihang ^{[1
]}

Wang, Yumei ^{[3
]}

Kotobuki, Masashi ^{[4
]}

Jiang, Kaiyong ^{[1
]}

机构：

[1] Huaqiao Univ, Fujian Key Lab Special Energy Mfg, Xiamen Key Lab Digital Vis Measurement, Xiamen 361021, Peoples R China

[2] Huaqiao Univ, Fujian Key Lab Light Propagat & Transformat, Xiamen 361021, Peoples R China

[3] Natl Univ Singapore Chongqing, Res Inst, Chongqing 401123, Peoples R China

[4] Ming Chi Univ Technol, Battery Res Ctr Green Energy, New Taipei 24301, Taiwan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2022年 / 287卷

关键词：

Lithium ion batteries; Solid electrolyte; Ionic liquid; Femtosecond laser; HIGH-VOLTAGE; HYBRID ELECTROLYTES; RECENT PROGRESS; LITHIUM;

D O I：

10.1016/j.matchemphys.2022.126265

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a novel composite electrolyte, composed of ceramic Li1.5Al0.5Ge1.5(PO4)(3) (LAGP) skeleton with tunable vertical pores and ionic liquids (IL) fillers. both components have high-safety features. The vertical ionic liquid channels that prepared by femtosecond laser shorten the lithium ion transport path and the ionic liquid on the electrolyte surface improves the wettability between the solid electrolyte and electrode material. The total impedance of the pores LAGP&IL electrolytes (PLI) is 411.6 Omega,with the ionic conductivity of 4.3 x 10(-5) S/cm at room temperature. Compared with non-pores LAGP&IL electrolytes (NPLI), the total impedance is reduced by 3 times. The lithium ion transference number of PLI electrolyte is 0.53, which is in contrast to the value 0.29 of NPLI electrolyte. The full cell consisting of LiFePO4 (LFP) | composite electrolyte | Li demonstrates a specific capacity of 136.6 mAhg(-1) on the first cycle of discharge at 0.1C and a capacity retention rate of 89.7% after 20 cycles at room temperature. The symmetrical battery can cycle stably for 60 h at room temperature, which is 140% longer than that of non-pores LAGP composite ionic liquid electrolyte. This work provides an insight into the high-performance electrolyte preparation and its significance in the high-safety lithium-metal battery.

引用

页数：7

共 37 条

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