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Plasticized Hybrid Network Solid Polymer Electrolytes for Lithium‐Metal Batteries
Author(s) -
Huang Ziyin,
Pan Qiwei,
Smith Derrick M.,
Li Christopher Y.
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201801445
Subject(s) - materials science , electrolyte , ionic conductivity , dendrite (mathematics) , conductivity , electrochemistry , nucleation , separator (oil production) , chemical engineering , electrochemical window , lithium (medication) , fast ion conductor , electrode , composite material , organic chemistry , chemistry , medicine , physics , geometry , mathematics , engineering , thermodynamics , endocrinology
Incorporating solid polymer electrolyte (SPE) into lithium metal batteries has the benefit of employing the electrolyte as the electrode separator while inhibiting the growth of lithium dendrites. The two main models on lithium dendrite growth show that either ionic conductivity or mechanical property affect lithium dendrite nucleation and growth rate. In this work, with a well‐controlled hybrid network SPE as the model system, the modulus and conductivity of the hybrid SPEs are systematically tuned by plasticizing the network with low molecular with diluents. This systematic property control allows for establishing the correlation between mechanical/electrochemical properties of the SPEs with their propensity of lithium dendrite resistance using galvanostatic polarization and cycling experiments. It is further demonstrated that lithium metal batteries can be operated at 30 °C for the plasticized SPEs due to the dramatically improved conductivity.