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Nanocoating inside porous PE separator enables enhanced ionic transport of GPE and stable cycling of Li-metal anode
Shanghai Univ, Res Ctr Nanosci & Nanotechnol, Shanghai 200444, Peoples R China.
Shanghai Univ, Res Ctr Nanosci & Nanotechnol, Shanghai 200444, Peoples R China.
Shanghai Univ, Res Ctr Nanosci & Nanotechnol, Shanghai 200444, Peoples R China.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0002-6326-8106
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2019 (English)In: Research on chemical intermediates (Print), ISSN 0922-6168, E-ISSN 1568-5675, Vol. 45, no 10, p. 4959-4973Article in journal (Refereed) Published
Abstract [en]

In this paper, a simple and feasible method for preparing gel polymer electrolyte (GPE) with good ionic transport properties and mechanical stability is proposed. A ZrO2/KH570/PU/P123 layer was formed on the outer and inner pore surfaces of PE separator before in situ polymerization by a simple one-step dipping coating process. This coating layer changes the PE separator surface from hydrophobic to hydrophilic, and therefore facilitates the uniform spreading of the GPE precursor solution on the PE surface to enable the formation of highly uniform GPE. Moreover, it effectively compensates the negative effects of in situ gelatinization on the ionic transport behavior of the final PE-supported GPE. This GPE possesses excellent ion transport properties and mechanical stability, as well as improves the static and dynamic interfacial stability with lithium metal anode. When using metallic lithium and LiCoO2 to assemble cells, this PE-supported GPE affords improved C-rate capability, cycling performance and effective dendrite inhibition. [GRAPHICS] .

Place, publisher, year, edition, pages
2019. Vol. 45, no 10, p. 4959-4973
Keywords [en]
Nanocoating, PE separator-supported, Gel polymer electrolyte, Lithium metal anode, Ionic transport properties
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-395791DOI: 10.1007/s11164-019-03879-0ISI: 000486518900015OAI: oai:DiVA.org:uu-395791DiVA, id: diva2:1365740
Funder
Swedish Research Council, 51711530162Available from: 2019-10-25 Created: 2019-10-25 Last updated: 2019-10-25Bibliographically approved

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Zhu, Jie-Fang

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