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Functional Polymers as Artificial Solid Electrolyte Interfaces for Stabilizing Lithium Metal Anode
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DOI：10.1002/cssc.202301228.png)
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Abstract
En 中文
The practical implementation of the lithium metal anode (LMA) has long been pursued due to its extremely high specific capacity and low electrochemical equilibrium potential. However, the unstable interfaces resulting from lithium ultrahigh reactivity have significantly hindered the use of LMA. This instability directly leads to dendrite growth behavior, dead lithium, low Coulombic efficiency, and even safety concerns. Therefore, artificial solid electrolyte interfaces (ASEI) with enhanced physicochemical and electrochemistry properties have been explored to stabilize LMA. Polymer materials, with their flexible structures and multiple functional groups, offer a promising way for structurally designing ASEIs to address the challenges faced by LMA. This Concept demonstrates an overview of polymer ASEIs with different functionalities, such as providing uniform lithium ion and single-ion transportation, inhibiting side reactions, possessing self-healing ability, and improving air stability. Furthermore, challenges and prospects for the future application of polymeric ASEIs in commercial lithium metal batteries (LMBs) are also discussed. The practical implementation of lithium metal anode (LMA) is hindered by unstable interfaces, dendrite growth, low efficiency, and safety concerns. Artificial solid electrolyte interfaces (ASEI) are explored to stabilize LMA. Polymer ASEIs offer a promising solution, providing uniform ion transport, inhibiting side reactions, self-healing, and improving stability. This Concept reviews polymer ASEIs with different functionalities and discusses challenges and prospects for their application in commercial lithium metal batteries.image
Keywords:
Li metal anode
functional polymer material
solid state electrolyte interface