articleNature CommunicationsJan 23, 2025GOLD OA

Ion bridging enables high-voltage polyether electrolytes for quasi-solid-state batteries

THTianyi HouDWDonghai WangBJBowen JiangYLYi LiuJKJia Kong

Huazhong University of Science and Technology · Tongji University · +1 more institution

PubMed
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Abstract

Polyether electrolytes have been widely recognized for their favorable compatibility with lithium-metal, yet they are hampered by intrinsically low oxidation thresholds, limiting their potential for realizing high-energy Li-metal batteries. Here, we report a general approach involving the bridge joints between non-lithium metal ions and ethereal oxygen, which significantly enhances the oxidation stability of various polyether electrolyte systems. To demonstrate the feasibility of the ion-bridging strategy, a Zn2+ ion-bridged polyether electrolyte (Zn-IBPE) with an extending electrochemical stability window of over 5 V is prepared, which enables good cyclability in 4.5 V Li||LiCoO2 batteries. Ampere-hour-level…

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42
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8

Topics & keywords

Topics
Keywords
  • Bridging (networking)
  • Ion
  • Electrolyte
  • Solid-state
  • Materials science
  • Nanotechnology
  • Fast ion conductor
  • Optoelectronics
UN Sustainable Development Goals
  • Affordable and clean energy
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