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Anisotropic semi-aligned PAN@PVdF-HFP separator for Li-ion batteries

Nanotechnology. 2020-07-01; 
Qiuhong Liu, Wenwu Jiang, Weizheng Lu, Yufan Mei, Fakang He, Minhui Zhang, Yin Liu, Yunqing Chen, Jinfeng Peng, Yanhuai Ding
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Catalog Antibody … FbVg was purified from fatbody protein extract (38) by GenScript (NY, USA) with size-exclusion (SEC) and ion-exchange steps like described before (38), and the purification was completed with a Superdex 75 column (Sigma- Aldrich, MO, USA) … Get A Quote

摘要

Compared with the common electrospun nanofibers, the alignment of the nanofibers exhibits interesting anisotropic mechanical properties and structural stability. In this paper, semi-aligned PAN@PVdF-HFP nanofiber separators were prepared by a modified electrospinning method. The composite separators exhibit anisotropic mechanical properties and enhanced electrochemical performance compared with electrospun PAN films. The PAN@PVdF-HFP nanofiber separator can deliver an ionic conductivity of 1.2 mS·cm-1 with electrochemical stability up to 5.0 V. The LiFePO4/Li cell with semi-aligned PAN@PVdF-HFP separator shows excellent cycling performance, good rate capability, as well as high discharge capacity.

關(guān)鍵詞

PAN@PVdF-HFP, alignment, anisotropic mechanical properties, electrospinning, separator
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