Novel configuration of heat-resistant gel polymer electrolyte with electrospun poly (vinylidene fluoride-co-hexafluoropropylene) and poly-m-phenyleneisophthalamide composite separator for high-safety lithium-ion battery
Novel configuration of heat-resistant gel polymer electrolyte with electrospun poly (vinylidene fluoride-co-hexafluoropropylene) and poly-m-phenyleneisophthalamide composite separator for high-safety lithium-ion battery
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高安全性锂离子电池用电纺聚偏氟乙烯-六氟丙烯共聚间苯二甲酰胺复合隔膜耐热凝胶聚合物电解质的新型结构
DOI：
10.1016/j.matlet.2018.10.067
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发表时间：
2019-02
影响因子：
3
通讯作者：
Cheng Bowen
中科院分区：
文献类型：
--
作者：
Zhao Huijuan;Deng Nanping;Ju Jingge;Li Zongjie;Kang Weimin;Cheng Bowen
本文采用一步法静电纺丝技术制备了聚偏氟乙烯-六氟丙烯共聚物/聚间苯二甲酰胺（PVDF-HFP/PMIA）复合膜。PVDF-HFP/PMIA纳米纤维具有较低的平均直径和均匀的直径分布，可以作为凝胶聚合物电解质的基体。值得注意的是，PVDF-HFP的存在赋予PMIA膜相当高的电解质吸收和孔隙率，突出的机械强度和显着的抗热收缩性。与纯PMIA和聚乙烯隔膜相比，PVDF-HFP/PMIA隔膜具有更高的离子电导率、更低的界面电阻和更稳定的电化学窗口。采用该隔膜制备的Li/LiCoO 2电池表现出良好的循环稳定性，在0.5C倍率下首次放电容量高达153.8 mAh g− 1，100次循环后上级容量保持率为88.75%。
In this work, a novel nanofiber composite membrane constituting poly (vinylidene fluoride-co-hexafluoropropylene)/poly-m-phenyleneiso-phthalamide (PVDF-HFP/PMIA) was successfully fabricated through one-step electrospinning technique. The PVDF-HFP/PMIA nanofibers possessed low average diameter and uniform diameter distribution, which were able to be acted as matrix for gel polymer electrolyte. Significantly, the presence of PVDF-HFP endowed PMIA membrane with considerable high electrolyte uptake and porosity, eminent mechanical strength and remarkable thermal shrinkage resistance. Compared with pure PMIA and polyethylene separators, the PVDF-HFP/PMIA separator obtained higher ionic conductivity, lower interfacial resistance and more stable electrochemical window. The Li/LiCoO2battery with the prepared separator reflected admirable cycle stability with outstanding first discharge capacity up to 153.8 mAh g−1at 0.5C rate and superior capacity retention of 88.75% after 100 cycles.
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影响因子：
9.2
作者：
L. Jian;Liu Yanbo;Wenxiu Yang;Qian Ren;Li Fangying;Huang Zheng
通讯作者：
L. Jian;Liu Yanbo;Wenxiu Yang;Qian Ren;Li Fangying;Huang Zheng
影响因子：
8.4
作者：
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通讯作者：
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影响因子：
0.5
作者：
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通讯作者：
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影响因子：
9.2
作者：
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通讯作者：
Scrosati, Bruno
影响因子：
9.5
作者：
Gopalan, Anantha Iyenger;Santhosh, Padmanabhan;Lee, Kwang-Pill
通讯作者：
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