Enhanced electrochemical performance of solid PEO/LiClO4 electrolytes with a 3D porous Li6.28La3Zr2Al0.24O12 network

Fu，Xuelian1,3; Li，Yuchao1; Liao，Chengzhu3; Gong，Weiping2; Yang，Mingyang3; Li，Robert Kwok Yiu4; Tjong，Sie Chin4; Lu，Zhouguang3

2019-11-10

10.1016/j.compscitech.2019.107863

COMPOSITES SCIENCE AND TECHNOLOGY   影响因子和分区

0266-3538

1879-1050

Low ionic conductivity and large interfacial impedance between the electrode and electrolyte are the main bottleneck issues of the current solid electrolytes. In this study, a novel 3D hierarchical solid electrolyte was developed to tackle the large interfacial impedance problem. A flexible polyethylene oxide/lithium chlorate (PEO/LiClO) was in-situ formed inside the 3D porous LiLaZrAlO (LLZAO) network by simply using a cleanroom wiper as the template. The obtained 3D LLZAO-PEO/LiClO composite solid electrolyte exhibited a high ionic conductivity of 2.25 × 10 S cm at 30 °C, being 30.7 times higher than that of pristine PEO/LiClO electrolyte. The improved ionic conductivity was attributed to the 3D porous LLZAO structure with continuous fast ion transport pathways. In addition, the 3D LLZAO network can effectively inhibited the growth of lithium dendrite, leading to excellent stability and desirable safety during lithium stripping/plating cycling. Furthermore, the all-solid-state LiFePO/Li battery system based on the obtained 3D LLZAO-PEO/LiClO electrolyte showed a high initial discharge specific capacity of 143.8 mAh·g and a high capacity retention of 86% after 200 cycles at 60 °C. This 3D composite solid electrolyte design is very effective in reducing the interfacial impedance and provides a solution for the further development of high-performance solid electrolyte for all-solid-state rechargeable batteries.

3D porous network Lithium battery Polyethylene oxide Solid-state electrolyte Templating method

SCI ; EI

英语

其他

Shenzhen Key Laboratory of Solid State Batteries[ZDSYS 20180208184346531]

Materials Science

Materials Science, Composites

WOS:000501650400021

ELSEVIER SCI LTD

20194107518285

Aluminum compounds ; Chlorine compounds ; Electric discharges ; Ionic conduction in solids ; Ionic conductivity ; Lanthanum compounds ; Lithium batteries ; Lithium compounds ; Polyethylene oxides ; Polyethylenes ; Potentiometric sensors ; Solid-State Batteries ; Zirconium compounds

Electricity: Basic Concepts and Phenomena:701.1 ; Primary Batteries:702.1.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Polymers:815.1.1

MATERIALS SCIENCE

2-s2.0-85072989047

Scopus

1.School of Materials Science and EngineeringLiaocheng University,Liaocheng,252059,China
2.Laboratory of Electronic Functional MaterialsHuizhou University,Huizhou,516001,China
3.Department of Materials Science and EngineeringSouthern University of Science and Technology,Shenzhen,518055,China
4.Department of Materials Science and EngineeringCity University of Hong Kong,Tat Chee Avenue, Kowloon Town,China

Fu，Xuelian,Li，Yuchao,Liao，Chengzhu,et al. Enhanced electrochemical performance of solid PEO/LiClO4 electrolytes with a 3D porous Li6.28La3Zr2Al0.24O12 network[J]. COMPOSITES SCIENCE AND TECHNOLOGY,2019,184.

Fu，Xuelian.,Li，Yuchao.,Liao，Chengzhu.,Gong，Weiping.,Yang，Mingyang.,...&Lu，Zhouguang.(2019).Enhanced electrochemical performance of solid PEO/LiClO4 electrolytes with a 3D porous Li6.28La3Zr2Al0.24O12 network.COMPOSITES SCIENCE AND TECHNOLOGY,184.

Fu，Xuelian,et al."Enhanced electrochemical performance of solid PEO/LiClO4 electrolytes with a 3D porous Li6.28La3Zr2Al0.24O12 network".COMPOSITES SCIENCE AND TECHNOLOGY 184(2019).