(642h) An Artificial Layer Based on Polymer of Intrinsic Microporosity to Suppress Dendrite Growth on Li Metal Anode
AIChE Annual Meeting
2021
2021 Annual Meeting
Materials Engineering and Sciences Division
Polymers for Energy Storage and Conversion
Thursday, November 11, 2021 - 5:30pm to 5:45pm
The performance and safety of lithium (Li) metal batteries are compromised due to the formation of Li dendrites. Here, the use of a polymer of intrinsic microporosity (PIM) is reported as a feasible and robust artificial layer that inhibits dendrite growth. The PIM demonstrates excellent film-forming ability, electrochemical stability, strong adhesion to a copper metal electrode, and outstanding mechanical flexibility so that it relieves the stress of structural changes produced by reversible lithiation. Importantly, the porous structure of the PIM, which guides Li flux to obtain uniform deposition, and its strong mechanical strength combine to suppress dendrite growth. Hence, the electrochemical performance of the anode is significantly enhanced, promising excellent performance and extended cycle lifetime for Li metal batteries.