Flexible Quasi‐Solid‐State Composite Electrolyte Membrane Derived from a Metal‐Organic Framework for Lithium‐Metal Batteries

2020 ◽  
Vol 7 (3) ◽  
pp. 707-715 ◽  
Author(s):  
Li Liu ◽  
Chunwen Sun
Keyword(s):  
Solid State ◽  
Metal Organic Framework ◽  
Lithium Metal ◽  
Composite Electrolyte ◽  
Electrolyte Membrane ◽  
Lithium Metal Batteries ◽  
Metal Organic ◽  
Organic Framework

scholarly journals HKUST-1@IL-Li Solid-state Electrolyte with 3D Ionic Channels and Enhanced Fast Li+ Transport for Lithium Metal Batteries at High Temperature

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 736
Author(s):  
Man Li ◽  
Tao Chen ◽  
Seunghyun Song ◽  
Yang Li ◽  
Joonho Bae
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Solid Electrolyte ◽  
Metal Organic Framework ◽  
Ionic Channels ◽  
Transference Numbers ◽  
Lithium Metal ◽  
Lithium Metal Batteries ◽  
Metal Organic ◽  
Organic Framework

The challenge of safety problems in lithium batteries caused by conventional electrolytes at high temperatures is addressed in this study. A novel solid electrolyte (HKUST-1@IL-Li) was fabricated by immobilizing ionic liquid ([EMIM][TFSI]) in the nanopores of a HKUST-1 metal–organic framework. 3D angstrom-level ionic channels of the metal–organic framework (MOF) host were used to restrict electrolyte anions and acted as “highways” for fast Li+ transport. In addition, lower interfacial resistance between HKUST-1@IL-Li and electrodes was achieved by a wetted contact through open tunnels at the atomic scale. Excellent high thermal stability up to 300 °C and electrochemical properties are observed, including ionic conductivities and Li+ transference numbers of 0.68 × 10-4 S·cm-1 and 0.46, respectively, at 25 °C, and 6.85 × 10-4 S·cm-1 and 0.68, respectively, at 100 °C. A stable Li metal plating/stripping process was observed at 100 °C, suggesting an effectively suppressed growth of Li dendrites. The as-fabricated LiFePO4/HKUST-1@IL-Li/Li solid-state battery exhibits remarkable performance at high temperature with an initial discharge capacity of 144 mAh g-1 at 0.5 C and a high capacity retention of 92% after 100 cycles. Thus, the solid electrolyte in this study demonstrates promising applicability in lithium metal batteries with high performance under extreme thermal environmental conditions.

Design of thiol–lithium ion interaction in metal–organic framework for high-performance quasi-solid lithium metal batteries

2021 ◽  
Author(s):  
Qi Zhang ◽  
Yingbo Xiao ◽  
Qi Li ◽  
Jia Wang ◽  
Sijia Guo ◽  
...  
Keyword(s):  
Solid Electrolyte ◽  
High Performance ◽  
Metal Organic Framework ◽  
Lithium Ion ◽  
Lithium Metal ◽  
Thiol Groups ◽  
Narrow Channels ◽  
Lithium Metal Batteries ◽  
Metal Organic ◽  
Organic Framework

A metal–organic framework (Zr–MA) was designed to serve as high-performance solid electrolyte in quasi-solid lithium metal batteries. Both the high-density thiol groups and narrow channels in framework contributed to the improved ion transport.

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