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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemistry
Sandwich-structured PVdF/PMIA/PVdF nanofibrous separators with robust mechanical strength and thermal stability for lithium ion batteries
Journal of Materials Chemistry A, Volume 2, No. 35, Year 2014
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Description
Novel, sandwich-structured PVdF/PMIA/PVdF nanofibrous battery separators with robust mechanical strength and thermal stability are fabricated via a sequential electrospinning technique. The nanofibers of the PVdF and the PMIA layers are bonded and interconnected on the interface boundary without any polymer binder or post-treatment. Benefiting from the high porosity of the as-prepared membranes and the introduction of PMIA, the PVdF/PMIA/PVdF composite membranes exhibit high ionic conductivity (2.3 times higher than that of the Celgard membrane), robust tensile strength (13.96 MPa), and excellent thermal stability, sustaining insulation after closing the pores in the PVdF layer. Hot oven testing reveals that the composite membranes exhibit no dimension shrinkage after being exposed to 180 °C for 1 h. Furthermore, the as-prepared-membrane-based Li/LiCoO2 cell shows a higher capacity retention of 93.10% after 100 cycles and better rate performance compared with the cell using the Celgard membrane, providing new insight into the design and development of high-performance rechargeable lithium ion batteries. © the Partner Organisations 2014.
Authors & Co-Authors
Zhai, Yunyun
China, Shanghai
Donghua University
China, Jiaxing
Jiaxing University
Wang, Na
China, Shanghai
Donghua University
Mao, Xue
China, Shanghai
Donghua University
Si, Yang
China, Shanghai
Donghua University
Yu, Jianyong
China, Shanghai
Donghua University
Al-Deyab, Salem Salem
Saudi Arabia, Riyadh
College of Sciences
El-Newehy, Mohamed Hassan
Saudi Arabia, Riyadh
College of Sciences
Egypt, Tanta
Faculty of Science
Ding, Bin
China, Shanghai
Donghua University
Statistics
Citations: 150
Authors: 8
Affiliations: 4
Identifiers
Doi:
10.1039/c4ta02151g
ISSN:
20507488
e-ISSN:
20507496