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Morphology and conductivity of in-situ PEO-LiClO4-TiO2 composite polymer electrolyte

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【作者】 潘春跃； 冯庆； 王丽君； 张倩； 巢猛；

【Author】 PAN Chun-yue, FENG Qing, WANG Li-jun, ZHANG Qian, CHAO Meng (School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China)

【机构】 School of Chemistry and Chemical Engineering Central South University； School of Chemistry and Chemical Engineering； Central South University； Changsha 410083 China Changsha 410083 China Changsha 410083 China Changsha 410083 China Changsha 410083 China；

【摘要】 PEO-LiClO4-TiO2 composite polymer electrolyte films were prepared. TiO2 was formed directly in matrix by hydrolysis and condensation reaction of tetrabutyl titanate. The crystallinity, morphology and ionic conductivity of composite polymer electrolyte films were examined by differential scanning calorimetry, scanning electron microscopy, atom force microscopy and alternating current impedance spectroscopy, respectively. The glass transition temperature and the crystallinity of composite polymer electrolytes are decreased compared with those of PEO-LiClO4 polymer electrolyte film. The results show that TiO2 particles are uniformly dispersed in PEO-LiClO4-5%TiO2 composite polymer electrolyte film. The maximal conductivity of 5.5×10、5 Scm at 20 ℃ of PEO-LiClO4-TiO2 film is obtained at 5% mass fraction of TiO2.

【Abstract】 PEO-LiClO4-TiO2 composite polymer electrolyte films were prepared. TiO2 was formed directly in matrix by hydrolysis and condensation reaction of tetrabutyl titanate. The crystallinity, morphology and ionic conductivity of composite polymer electrolyte films were examined by differential scanning calorimetry, scanning electron microscopy, atom force microscopy and alternating current impedance spectroscopy, respectively. The glass transition temperature and the crystallinity of composite polymer electrolytes are decreased compared with those of PEO-LiClO4 polymer electrolyte film. The results show that TiO2 particles are uniformly dispersed in PEO-LiClO4-5%TiO2 composite polymer electrolyte film. The maximal conductivity of 5.5×10、5 Scm at 20 ℃ of PEO-LiClO4-TiO2 film is obtained at 5% mass fraction of TiO2.

【关键词】 polyethylene oxide (PEO)； TiO2； composite polymer electrolyte； in-situ composite； conductivity；
【Key words】 polyethylene oxide (PEO)； TiO2； composite polymer electrolyte； in-situ composite； conductivity；
  • 【文献出处】 Journal of Central South University of Technology ,中南工业大学学报(英文版) , 编辑部邮箱 ,2007年03期
  • 【分类号】O631.3
  • 【被引频次】4
  • 【下载频次】62
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