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 ◽  
...  

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.

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 736
Author(s):  
Man Li ◽  
Tao Chen ◽  
Seunghyun Song ◽  
Yang Li ◽  
Joonho Bae

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.


2021 ◽  
Author(s):  
Bitao Su ◽  
Ming Zhong ◽  
Lingling Li ◽  
Kun Zhao ◽  
Hui Peng ◽  
...  

Searching for novel alternatives to traditional graphite anode for high performance lithium-ion batteries is of great significance, which, however, faces many challenges. In this work, a pyrolysis coupled with selenization...


2019 ◽  
Vol 54 (6) ◽  
pp. 1800281 ◽  
Author(s):  
Hongda Wu ◽  
Guang Li ◽  
Yue Li ◽  
Zhongxing Geng ◽  
Tieqiang Ren ◽  
...  

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Kwan Woo Nam ◽  
Sarah S. Park ◽  
Roberto dos Reis ◽  
Vinayak P. Dravid ◽  
Heejin Kim ◽  
...  

Abstract Currently, there is considerable interest in developing advanced rechargeable batteries that boast efficient distribution of electricity and economic feasibility for use in large-scale energy storage systems. Rechargeable aqueous zinc batteries are promising alternatives to lithium-ion batteries in terms of rate performance, cost, and safety. In this investigation, we employ Cu3(HHTP)2, a two-dimensional (2D) conductive metal-organic framework (MOF) with large one-dimensional channels, as a zinc battery cathode. Owing to its unique structure, hydrated Zn2+ ions which are inserted directly into the host structure, Cu3(HHTP)2, allow high diffusion rate and low interfacial resistance which enable the Cu3(HHTP)2 cathode to follow the intercalation pseudocapacitance mechanism. Cu3(HHTP)2 exhibits a high reversible capacity of 228 mAh g−1 at 50 mA g−1. At a high current density of 4000 mA g−1 (~18 C), 75.0% of the initial capacity is maintained after 500 cycles. These results provide key insights into high-performance, 2D conductive MOF designs for battery electrodes.


Nano Energy ◽  
2020 ◽  
Vol 75 ◽  
pp. 104935
Author(s):  
Ye Bian ◽  
Shijie Wang ◽  
Dongdong Jin ◽  
Rutao Wang ◽  
Chun Chen ◽  
...  

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