Functionalized Nanocellulose-Integrated Heterolayered Nanomats toward Smart Battery Separators.

Citation data:

Nano letters, ISSN: 1530-6992, Vol: 16, Issue: 9, Page: 5533-41

Publication Year:
2016
Usage 17
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Captures 38
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Mentions 2
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Citations 14
Citation Indexes 14
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/20634
PMID:
27383666
DOI:
10.1021/acs.nanolett.6b02069
Author(s):
Kim, Jung-Hwan; Gu, Minsu; Lee, Do Hyun; Kim, Jeong-Hoon; Oh, Yeon-Su; Min, Sa Hoon; Kim, Byeong-Su; Lee, Sang-Young
Publisher(s):
American Chemical Society (ACS); AMER CHEMICAL SOC
Tags:
Chemical Engineering; Chemistry; Materials Science; Physics and Astronomy; Engineering; functionalized nanocellulose; heterolayered nanomat; metal-ion chelation; molecular simulation; Separator membranes
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article description
Alternative materials obtained from natural resources have recently garnered considerable attention as an innovative solution to bring unprecedented advances in various energy storage systems. Here, we present a new class of heterolayered nanomat-based hierarchical/asymmetric porous membrane with synergistically coupled chemical activity as a nanocellulose-mediated green material strategy to develop smart battery separator membranes far beyond their current state-of-the-art counterparts. This membrane consists of a terpyridine (TPY)-functionalized cellulose nanofibril (CNF) nanoporous thin mat as the top layer and an electrospun polyvinylpyrrolidone (PVP)/polyacrylonitrile (PAN) macroporous thick mat as the support layer. The hierarchical/asymmetric porous structure of the heterolayered nanomat is rationally designed with consideration of the trade-off between leakage current and ion transport rate. The TPY (to chelate Mn(2+) ions) and PVP (to capture hydrofluoric acid)-mediated chemical functionalities bring a synergistic coupling in suppressing Mn(2+)-induced adverse effects, eventually enabling a substantial improvement in the high-temperature cycling performance of cells.