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Layer-by-Layer Deposition of Organic-Inorganic Hybrid Multilayer on Microporous Polyethylene Separator to Enhance the Electrochemical Performance of Lithium-Ion Battery
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..
Donghua Univ, Shanghai 201620, Peoples R China..
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2015 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 7, no 37, 20678-20686 p.Article in journal (Refereed) Published
Abstract [en]

A simple layer-by-layer (LbL) self-assembly process of poly(acrylic acid) (PAA) and ZrO2 was applied to construct functional ultrathin multilayers on polyethylene (PE) separators without sacrificing the excellent porous structure of separators. Such PAA/ZrO2 LbL-modified PE separators possess good electrolyte wettability, excellent electrolyte uptake, high ionic conductivity and large Li+ transference number. More importantly, the top layer of LbL self-assembly would affect the dissociation of electrolyte and the formation of solid electrolyte interphase (SEI) layer in half-cells. Compared with the pristine and (PAA/ZrO2)(1)PAA-modified PE separators, (PAA/ZrO2)(3)-modified PE separator shows a larger Li+ transference number (0.6) and a faster tendency to form a stable SEI layer, endowing half-cells with excellent capacity retention at high C-rates and superior cycling performance. These fascinating characteristics will provide the LbL self-assembly with a promising method to improve the surface property of PE separators for high performance lithium-ion batteries.

Place, publisher, year, edition, pages
2015. Vol. 7, no 37, 20678-20686 p.
Keyword [en]
layer-by-layer self-assembly, surface modification, separator, Li-ion battery, C-rate capability
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-265913DOI: 10.1021/acsami.5b05457ISI: 000361931600023PubMedID: 26336109OAI: oai:DiVA.org:uu-265913DiVA: diva2:867063
Available from: 2015-11-04 Created: 2015-11-04 Last updated: 2017-12-01Bibliographically approved

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Zhu, Jiefang

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