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http://dx.doi.org/10.14579/MEMBRANE_JOURNAL.2020.30.1.30

Polymer/Inorganic Nanohybrid Membrane on Lithium Metal Electrode: Effective Control of Surficial Growth of Lithium Layer and Its Improved Electrochemical Performance  

Jeong, Yohan (Department of Chemical Engineering, Kwangwoon University)
Seok, Dohyeong (Department of Chemical Engineering, Kwangwoon University)
Lee, Sanghyun (Department of Chemical Engineering, Kwangwoon University)
Shin, Weon Ho (Department of Electronic Material Engineering, Kwangwoon University)
Sohn, Hiesang (Department of Chemical Engineering, Kwangwoon University)
Publication Information
Membrane Journal / v.30, no.1, 2020 , pp. 30-37 More about this Journal
Abstract
Polymer/inorganic composites were used as a protective layer of lihitum metal electrode for effective suppression of lithium dendrite. PVDF-HFP was used as an polymer material and TiO2 nanoparticle was used as an inorganic material. PVDF-HFP is a highly flexible polymer that acts as a matrix of inorganic materials while TiO2 nanoparticle improves the mechanical strength and ion conductivity of the protective layer. The as-synthesized protective hybrid membrane exhibited good dispersion of TiO2 in the PVDF-HFP matrix by SEM, AFM and XRD analyses. Furthermore, the electrochemical analysis showed that the polymer-inorganic composite retained high coulombic efficiency of 80% and low overpotential, less than 20 mV until the 100th cycles due to the improved mechanical properties and ion conductivity in comparison to the control sample (untreated and PVDF-HFP polymers/Cu).
Keywords
lithium metal battery; lithium dendirte; polymer/inorganic hybrid; PVDF-HFP; $TiO_2$;
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Times Cited By KSCI : 2  (Citation Analysis)
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