Journal article
Dendrite-free, wide temperature range lithium metal batteries enabled by hybrid network ionic liquids
ENERGY STORAGE MATERIALS, v 29, pp 273-280
01 Aug 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Replacing liquid electrolytes with solid-state electrolytes is a promising approach to achieving practical applications of lithium metal batteries (LMBs). In this work, ionic liquid N-methyl-N-propyl-pyrrolidinium bis(fluorosulfonyl)imide (Pyr(13)FSI) was introduced into a hybrid network to obtain a series of gel polymer electrolytes (GPEs). Mechanical and electrochemical properties of the GPEs were tuned through controlling the network structure and ionic liquid contents, and ionic conductivity higher than 1 mS cm(-1) at room temperature was achieved. The newly developed GPEs are flame-retardant and show excellent thermal and electrochemical stability as well as ultra-stability with lithium metal anode. Symmetrical lithium cells with the GPEs exhibit a stable cycling over 6800 h at a current density of 0.1 mA cm(-2) and stable lithium stripping-plating at 1 mA cm(-2), the highest current density reported for ionic liquid-based GPEs. Detailed correlation between mechanical properties, ionic conductivity and cell short-circuit time is discussed. Moreover, Li/LiFePO4 batteries with the obtained GPEs exhibit desirable cycling stability and rate performance over a wide temperature range from 0 degrees C to 90 degrees C, further suggesting that this new hybrid-network/ionic liquid GPE system has great potential for practical applications in next generation LMBs.
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Details
- Title
- Dendrite-free, wide temperature range lithium metal batteries enabled by hybrid network ionic liquids
- Creators
- Xiaowei Li - Drexel UniversityYongwei Zheng - Drexel UniversityChristopher Y. Li - Drexel University
- Publication Details
- ENERGY STORAGE MATERIALS, v 29, pp 273-280
- Publisher
- Elsevier
- Number of pages
- 8
- Grant note
- CBET 1510092; CBET 1603520 / National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000571725100029
- Scopus ID
- 2-s2.0-85084943116
- Other Identifier
- 991019167659504721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology