An All-Solid-State Lithium Metal Battery Based on Electrodes-Compatible Plastic Crystal Electrolyte

Solid-state plastic crystal electrolytes (SPCEs) have attracted much attention due to their high ionic conductivity at room temperature and polymer-like plasticity. Herein, we made a LiFePO4||Li solid state battery based on SPCEs. A SPCE film is made up of glass fiber, succinonitrile (SN), lithium b...

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Bibliographic Details
Published in:Energies (Basel) 2021-11, Vol.14 (21), p.6946
Main Authors: Zhao, Bin, Wang, Qi, Yuan, Boheng, Lu, Yafei, Han, Xiaogang
Format: Article
Language:English
Subjects:
Ambient temperature
Cathodes
Conductivity
electrode compatible
Electrodes
Electrolytes
Glass fibers
Interfaces
Ion currents
Lithium
Lithium batteries
Molten salt electrolytes
Morphology
plastic crystal
Plasticity
Polymers
Room temperature
Solid electrolytes
Solid state
solid-state batteries
Solids
Specific capacity
Spectrum analysis
Succinonitrile
Temperature
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Summary:Solid-state plastic crystal electrolytes (SPCEs) have attracted much attention due to their high ionic conductivity at room temperature and polymer-like plasticity. Herein, we made a LiFePO4||Li solid state battery based on SPCEs. A SPCE film is made up of glass fiber, succinonitrile (SN), lithium bis (triflu-romethanesulphonyl) imid (LiTFSI), and LiNO3. Glass fiber is introduced to improve the mechanical property, and LiNO3 served as an additive to stabilize electrolyte/Li interface. The SPCE film delivers a high ionic conductivity of 7.3 × 10−4 S cm−1 at room temperature and has excellent stability with Li-metal anode. SPCE is also infused into cathode electrode and used as the interface with cathode particles, which can access a large interface contact area and deform reversibly with volume change. The LiFePO4||Li solid state battery based on SPCE can work well at ambient temperature, which shows a high initial specific capacity of 121.4 mAh g−1 and has 86.9% retention after 90 cycles at 0.5 C.
ISSN:1996-1073
1996-1073
DOI:10.3390/en14216946