Gel polymer electrolytes based on nanofibrous polyacrylonitrile–acrylate for lithium batteries

Journal Article · Wed Oct 15 04:00:00 EDT 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2014.01.047· OSTI ID:22420595

Kim, Dul-Sun ^[1]; Woo, Jang Chang ^[2]; Manuel, James ^[1]; Ahn, Jou-Hyeon ^[1]

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1. Department of Chemical and Biological Engineering, Research Institute for Green Energy Convergence Technology, Gyeongsang National University, 900 Gajwa-dong, Jinju 660-701 (Korea, Republic of)
2. Department of Textile Engineering, Inha University, 100 Inharo, Nam-gu Incheon 402-751 (Korea, Republic of)

Graphical abstract: - Highlights: • Nanofibrous polyacrylonitrile–acrylate membranes were prepared by electrospinning. • Trimethylolpropane triacrylate was used as a crosslinking agent of fibers. • The GPE based on PAN–acrylate (1/0.5) showed good electrochemical properties. - Abstract: Nanofibrous membranes for gel polymer electrolytes (GPEs) were prepared by electrospinning a mixture of polyacrylonitrile (PAN) and trimethylolpropane triacrylate (TMPTA) at weight ratios of 1/0.5 and 1/1. TMPTA is used to achieve crosslinking of fibers thereby improving mechanical strength. The average fiber diameters increased with increasing TMPTA concentration and the mechanical strength was also improved due to the enhanced crosslinking of fibers. GPEs based on electrospun membranes were prepared by soaking them in a liquid electrolyte of 1 M LiPF{sub 6} in ethylene carbonate (EC)/dimethyl carbonate (DMC) (1:1, v/v). The electrolyte uptake and ionic conductivity of GPEs based on PAN and PAN–acrylate (weight ratio; 1/1 and 1/0.5) were investigated. Ionic conductivity of GPEs based on PAN–acrylate was the highest for PAN/acrylate (1/0.5) due to the proper swelling of fibers and good affinity with liquid electrolyte. Both GPEs based on PAN and PAN–acrylate membranes show good oxidation stability, >5.0 V vs. Li/Li{sup +}. Cells with GPEs based on PAN–acrylate (1/0.5) showed remarkable cycle performance with high initial discharge capacity and low capacity fading.

• OSTI ID: 22420595
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 58; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACRYLATES
CARBONATES
CARBONIC ACID ESTERS
CONCENTRATION RATIO
CROSS-LINKING
ELECTROCHEMISTRY
ELECTROLYTES
ELECTRON MICROSCOPY
ETHYLENE
FIBERS
IMPEDANCE
IONIC CONDUCTIVITY
LITHIUM
LITHIUM IONS
MEMBRANES
NANOSTRUCTURES
NITRILES
ORGANIC POLYMERS
OXIDATION
SPECTROSCOPY