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PVP/PVDF-HFP微孔聚合物电解质的制备及性能
Preparation and properties of PVP/PVDF-HFP microporous polymer electrolyte
作 者:杨波 李新海 郭华军 王志兴 黄思林 李勇勇
YANG Bo,LI Xin-hai,GUO Hua-jun,WANG Zhi-xing,HUANG Si-ling,LI Yong-yong (School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China)
机构地区:中南大学冶金科学与工程学院,湖南长沙,410083
出 处:《中南大学学报:自然科学版》 EI CAS CSCD 2012年第43卷第5期 1628-1633页,共6页
Journal of Central South University:Science and Technology
基 金:湖南省重大科技专项项目(2009FJ1002)
摘 要:以聚偏氟乙烯-六氟丙烯(PVDF-HFP)和聚乙烯基吡咯烷酮(PVP)为基质材料,采用倒相法,在不同的PVP:PVDF-HFP配比下合成PVP/PVDF-HFP微孔聚合物电解质膜,将制备的微孔膜浸入电解液中活化得到了一系列锂离子电解质膜,并通过扫描电镜、力学、红外光谱进行能分析。研究结果表明:所制备的微孔聚合物电解质膜在PVP:PVDF-HFP配比(质量比)为0.2:1时综合性能最好,其吸液率为210%,抗拉强度为2.86 N/mm2,电导率为1.82×10-3 S/cm,电化学稳定窗口为5.7 V。
PVP/PVDF-HFP micropores membranes based on PVDF-HFP and PVP were prepared by the phase transfer method with different mass ratios of PVP to PVDF-HFP.The membranes were characterized by means of SEM,FTIR,AC impedance and linear scan voltammetry methods.The results show that the optimium mass ratio of PVP to PVDF-HFP is 0.2:1.The liquid absorption rate of the polymer electrolyte is 210%.It shows a good tensile strength of 2.86 N/mm2.The ionic conductivity is 1.82×10?3 S/cm,and the electrochemical stable window is 5.7 V.
关 键 词:聚合物电解质 锂离子电池 倒相法 离子电导率
polymer electrolyte Li-ion battery phase inversion ionic conductivity
分 类 号:TM912 [工业技术 > 电工技术 > 独立电源技术(直接发电)]
参考文献作者在撰写文献时引用的其他文献,反映本文的背景或依据。 (12篇)[1]韩坤明 鲁道荣.钠米SiO2/LiCiO4/PVDFHFP复合凝胶聚合物电解质的制备及其电化学性能[J].复合材料学报,2008,25(3):57-62.
[2]Kang Y, Lee J, Lee J I, et al. Ionic conductivity and electrochemical properties of cross-linked solid polymer electrolyte using star-shaped siloxane acrylate[J]. Journal of Power Sources, 2007, 165(1): 92-96.
[3]Choi J W, Kim J K, Cherucally O, et al. Rechargeable lithium/sulfur battery with suitable mixed liquid electrolytes[J]. Electrochimica Acta, 2007, 52(5): 2075-2082.
[4]Choe H S, Carroll B G. Pasquariello D M, et al. Characterization of some polyacrylonitrile-based electrolytes[J]. Chemistry Material, 1997, 9(1): 369-379.
[5]Noboru O, Yuki F, Osamu H, et al. New gel-type polyolefin electrolyte film for rechargeable lithium batteries[J]. Journal of Power Sources, 2009, 189(1): 315-323.
[6]胡拥军 李义兵.[J].湖南城市学院学报,2008,17(3):51-54.
[7]Xinping H, Kok S. S. Mechanical properties and ionic conductivities of plasticized polymer electrolytes based on ABS/PMMA blends[J]. Polymer, 2000, 41 (24): 8689-8696.
[8]陈振兴.高分子电池材料[D].北京:化学工业出版社,2006.292-344.
[9]马亚旗.[D].哈尔滨:哈尔滨工业大学应用化学系,2006:16-17.
[10]朱淮武.有机分子结构波谱解析[M].北京:化学工业出版社,2005.36.
[11]张华.现代有机波谱分析[M].北京:化学工业出版社,2005..
[12]王志栋 徐自力 杨英歌 等.利用水溶性聚合物PVP作稳定剂合成CdS、CdSe半导体纳米晶体[J].材料导报,2006,20(S2):53-57. |
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