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Sandwich structured PVDF-HFP-based composite solid electrolytes for solid-state lithium metal batteries.
- Source :
- Ionics; Jul2022, Vol. 28 Issue 7, p3243-3253, 11p
- Publication Year :
- 2022
-
Abstract
- It is crucial to develop solid electrolyte with good mechanical and electrochemical stability for the application of lithium metal battery. In this work, a sandwich-structured composite solid electrolyte is designed and prepared based on the blend of polyvinylidene fluoride-hexafluoropropylene/polyacrylonitrile (PVDF-HFP/PAN) polymer, Li<subscript>6.46</subscript>La<subscript>3</subscript>Zr<subscript>1.46</subscript>Ta<subscript>0.54</subscript>O<subscript>12</subscript> as filler, and a layer of PE film is introduced in the middle to act as a skeleton. The sandwich-structured PVDF-HFP/PAN-10%LLZTO-PE composite solid electrolyte displays a tensile strength of 66.58 MPa, high ionic conductivity of 2.28 × 10<superscript>-4</superscript> S/m at 25 °C, wide electrochemical stable window of 4.8 V, and high lithium ion transfer number of 0.44. The LiFePO<subscript>4</subscript> | PVDF-HFP/PAN-10%LLZTO-PE | Li coin battery shows a high specific capacity of 161.9 mAh/g and retains 150.2 mAh/g after 300 cycles at 1 C. Furthermore, the LiFePO<subscript>4</subscript> | PVDF-HFP/PAN-10%LLZTO-PE | Li pouch battery shows excellent safety and functionality. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09477047
- Volume :
- 28
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Ionics
- Publication Type :
- Academic Journal
- Accession number :
- 157505130
- Full Text :
- https://doi.org/10.1007/s11581-022-04599-z