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Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications
Published on: August 12, 2013
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Lithium Metal Anodes with Nonaqueous Electrolytes.
Ji-Guang Zhang1, Wu Xu1, Jie Xiao1,2
1Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, Washington 99354 United States.
Chemical Reviews
|November 11, 2020
Summary
Researchers are stabilizing lithium metal anodes (LMA) in rechargeable lithium metal batteries (LMBs) for safer, high-energy storage. Novel electrolytes and protective coatings are key to overcoming past limitations and enabling practical applications.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Rechargeable lithium metal batteries (LMBs) offer higher energy density than Li-ion batteries.
- Lithium metal anodes (LMA) face safety and efficiency challenges hindering practical use.
- Recent advancements aim to revive LMA-based LMBs for next-generation energy storage.
Purpose of the Study:
- To review recent progress in stabilizing LMA with nonaqueous electrolytes.
- To elucidate the fundamental mechanisms behind improved LMA stability.
- To discuss strategies for enhancing LMA performance in practical conditions.
Main Methods:
- Review of novel electrolyte systems: superconcentrated, localized high-concentration, and highly fluorinated electrolytes.
- Analysis of surface coating strategies for solid electrolyte interphase (SEI) formation and self-healing.
- Exploration of 'anode-free' battery designs to minimize LMA-electrolyte interactions.
Main Results:
- Identified key strategies for stabilizing LMA, including advanced electrolytes and protective coatings.
- Elucidated mechanisms contributing to enhanced interfacial stability.
- Highlighted approaches for enabling LMA operation under practical battery conditions.
Conclusions:
- Stabilization of LMA is crucial for unlocking the high energy density potential of LMBs.
- A combination of novel electrolytes, protective coatings, and innovative battery designs is essential.
- These advancements bring large-scale application of LMBs, the 'Holy Grail' of energy storage, closer to reality.
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