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Abstract
Polymer-based solid electrolytes (PSEs) offer great promise in developing lithium metal batteries due to their attractive features such as safety, light weight, low cost, and high processability. However, a PSE-based lithium battery usually requires a relatively high temperature (60 °C or above) to complete charge and discharge due to the poor ionic conductivity of PSEs. Herein, a gel polymer electrolytes (GPEs) film with a supramolecular network structure through a facile one-step photopolymerization is designed and developed. The crosslinked structure and quadruple hydrogen bonding fulfil the GPEs with high thermal stability and good mechanical property with a maximum tensile strain of 48%. The obtained GPEs possess a high ionic conductivity of 3.8 × 10−3 S cm−1 at 25 °C and a decomposition voltage ≥ 4.6 V (vs Li/Li+). The cells assembled with LiFePO4 cathode and Li anode, present an initial discharge specific capacity of 155.6 mAh g−1 and a good cycling efficiency with a capacity retention rate of 81.1% after 100 charges/discharge cycles at 0.1 C at ambient temperature. This work encompasses a route to develop high performance PSEs that can be operated at room temperature for future lithium metal batteries.
Original language | English |
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Article number | 2106352 |
Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Small |
Volume | 18 |
Issue number | 43 |
Early online date | 20 Jan 2022 |
DOIs | |
Publication status | Published - 26 Oct 2022 |
Keywords
- Research Article
- Research Articles
- gel polymer electrolytes (GPEs)
- high‐voltage electrolytes
- ionic conductivity
- lithium metal batteries
- supramolecular networks
- high-voltage electrolytes
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Dive into the research topics of 'Supramolecular Network Structured Gel Polymer Electrolyte with High Ionic Conductivity for Lithium Metal Batteries'. Together they form a unique fingerprint.Projects
- 1 Finished
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Stimuli-responsive gel based microfluidic switch
Xu, B. B. (PI)
Engineering and Physical Sciences Research Council
1/10/15 → 30/07/17
Project: Research