期刊
NANO LETTERS
卷 16, 期 9, 页码 5533-5541出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.6b02069
关键词
Separator membranes; heterolayered nanomat; functionalized nanocellulose; metal-ion chelation; molecular simulation
类别
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and future Planning [2014R1A2A1A11052829, 2015R1A2A1A01003474, 2015R1A2A2A04003160]
- Industrial Technology Innovation Program [10050568]
- Ministry of Trade, Industry Energy (MOTIE)
- Global Ph.D. Fellowship - NRF [NRF-2013H1A2A1033278]
- National Research Foundation of Korea [2014R1A2A1A11052829] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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 Mn2+ ions) and PVP (to capture hydrofluoric acid)-mediated chemical functionalities bring a synergistic coupling in suppressing Mn2+-induced adverse effects, eventually enabling a substantial improvement in the high-temperature cycling performance of cells.
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