A Janus-faced, perovskite nanofiber framework reinforced composite electrolyte for high-voltage solid lithium-metal batteries

Liu，Ke1; Wu，Maochun1; Jiang，Haoran1; Lin，Yanke1; Xu，Jianbo1; Zhao，Tianshou1,2

2022-04-01

10.1016/j.jpowsour.2022.231172

JOURNAL OF POWER SOURCES   影响因子和分区

0378-7753

1873-2755

High-voltage solid lithium-metal batteries (HVSLMBs) are not only energy denser but also safer than state-of-the-art lithium-ion batteries. However, the narrow electrochemical stability windows and low ionic conductivities of polymer solid electrolytes severely hinder the practical application of this type of battery. To simultaneously address these issues, we propose and fabricate a thin yet mechanically strong composite solid electrolyte by forming a layer of a reduction-tolerant polyethylene glycol diacrylate (PEGDA) and oxidation-resistant poly(vinylidene fluoride) (PVDF) within the perovskite nanofiber framework. The unique Janus-faced design enables stable and intimate contact with the lithium metal anode and high-voltage cathode, while the perovskite inorganic electrolyte LiLaTiO (LLTO) nanofiber framework endows the membrane with a high ionic conductivity of 0.1 mS cm at room temperature (25 °C) and excellent mechanical strength with the thickness of as low as 24 μm. When paired with a high-voltage LiNiCoMnO cathode, the solid lithium battery can deliver a reversible discharge capacity of as high as 176 mAh g at 0.2C at room temperature. This work offers a novel, effective strategy to develop high-performance solid electrolytes for next-generation high-voltage lithium batteries.

Composite electrolyte High-voltage Janus-faced Perovskite Solid lithium metal battery

SCI ; EI

英语

通讯

Research Grants Council of the Hong Kong Special Administrative Region, China[R6005-20]

Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000783117400003

ELSEVIER

20221111787827

Cathodes ; Cobalt compounds ; Fluorine compounds ; Ionic conduction in solids ; Ionic conductivity ; Ionic strength ; Lanthanum compounds ; Lithium compounds ; Lithium-ion batteries ; Manganese compounds ; Metals ; Nanofibers ; Nickel compounds ; Oxidation resistance ; Polyelectrolytes ; Solid electrolytes ; Solid-State Batteries

Minerals:482.2 ; Metals Corrosion:539.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Secondary Batteries:702.1.2 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Polymers:815.1.1 ; Polymer Products:817.1 ; Solid State Physics:933

MATERIALS SCIENCE

2-s2.0-85126099627

Scopus

1.Department of Mechanical and Aerospace Engineering,The Hong Kong University of Science and Technology,Kowloon,Clear Water Bay,Hong Kong
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Liu，Ke,Wu，Maochun,Jiang，Haoran,et al. A Janus-faced, perovskite nanofiber framework reinforced composite electrolyte for high-voltage solid lithium-metal batteries[J]. JOURNAL OF POWER SOURCES,2022,526.

Liu，Ke,Wu，Maochun,Jiang，Haoran,Lin，Yanke,Xu，Jianbo,&Zhao，Tianshou.(2022).A Janus-faced, perovskite nanofiber framework reinforced composite electrolyte for high-voltage solid lithium-metal batteries.JOURNAL OF POWER SOURCES,526.

Liu，Ke,et al."A Janus-faced, perovskite nanofiber framework reinforced composite electrolyte for high-voltage solid lithium-metal batteries".JOURNAL OF POWER SOURCES 526(2022).