以甲氧基聚乙二醇甲基丙烯酸酯(MPEGM)和十六烷基聚乙二醇甲基丙烯酸酯(HPEGM)为单体,三(甲氧基聚乙二醇)-铝酯(MPEG-Al酯)为增塑剂,锂盐为高氯酸锂(LiClO4),采用自由基溶液聚合法制备了聚合物电解质 P(MPEGM-HPEGM)/MPEG-Al。用红外光谱(FT-IR)、差热分析(DSC)和交流阻抗等方法对聚合物及电解质的结构与性能进行了研究。测试结果表明,MPEGM和 HPEGM共聚生成 P(MPEGM-co-HPEGM)；聚合物中聚氧化乙烯(PEO)链段的运动能力得到提高,有利于离子传输；聚合物电解质膜具有优良的热稳定性和电化学稳定性；以 MPEG7-Al 为增塑剂,当m(MPEGM)∶m(HPEGM)∶m(MPEG7-Al)=4∶1∶5,n(Li+)∶n(EO)=1∶20时,30℃下,聚合物电解质的离子电导率最高达到0.43×10-3 S/cm；离子迁移数达到0.3；电化学窗口为4.8V。
A novel comb-like copolymer electrolyte was designed by co-polymerizing of two macro-monomers:methoxy-poly(ethylene glycol)methacrylate (MPEGM)and hexadecal-poly (ethylene glycol)methacrylate (HPEGM),tris(methoxypolyethyleneglycol)aluminate ester (MPEG-Al ester),Li-salt(LiClO4 ).Perform-ances of the polymer electrolytes were studied by FT-IR,DSC and alternating current(AC)impedance and so on.The results showed that P(MPEGM-HPEGM)had been formed and the motion of PEO chains had been im-proved.The polymer electrolytes possessed excellent thermal stability and electrochemical stability.And when the weight ratio of MPEGM to HPEGM to MPEG7-Al ester was 4∶1∶5,the maximum ionic conductivity val-ue reached 0.43×10-3 S/cm with n(Li+)∶n(EO)=1∶20 at 30℃.
参考文献
| [1] | Eliana Quartarone;Piercarlo Mustarelli .Electrolytes for solid-state lithium rechargeable batteries: recent advances and perspectives[J].Chemical Society Reviews,2011(5):2525-2540. |
| [2] | Shahzada Ahmad .Polymer electrolytes: characteristics and peculiarities[J].Ionics,2009(3):309-321. |
| [3] | Stephan AM;Nahm KS .Review on composite polymer electrolytes for lithium batteries[J].Polymer: The International Journal for the Science and Technology of Polymers,2006(16):5952-5964. |
| [4] | Snyder J F;Carter R H;Energy E D .Density and rate limitations in structural composite supercapacitors[J].Wetzel Chemical of Material,2007,19:3793. |
| [5] | Yoshimoto N;Shimamura O;Nishimura T;Egashira M;Nishioka M;Morita M .A novel polymeric electrolyte based on a copolymer containing self-assembled stearylate moiety for lithium-ion batteries[J].Electrochemistry communications,2009(2):481-483. |
| [6] | Monalisa Patel;M. Gnanavel;Aninda J. Bhattacharyya .Utilizing an ionic liquid for synthesizing a soft matter polymer "gel" electrolyte for high rate capability lithium-ion batteries[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,2011(43):17419-17424. |
| [7] | 李月姣,胡仁超,吴锋,陈实.聚氧化乙烯-聚硅氧烷基离子液体复合聚合物电解质的研究[J].功能材料,2012(04):525-528. |
| [8] | 陈春明,陈中华,曾幸荣,张正国.阳离子超支化聚合物电解质的合成及离子传导性能研究[J].功能材料,2012(16):2142-2145,2149. |
| [9] | Zuo Xiang;Liu Xiaomin;Cai Feng et al.A novel all-sol-id electrolyte based on co-polymer of poly-(methoxy/hexadecal-poly(ethylene glycol)methacrylate)for lithi-um-ion cell[J].Journal of Materials Chemistry,2012,22(41):22265. |
| [10] | Masuda Y;Seki M;Nakayama M;Wakihara M;Mita H .Study on ionic conductivity of polymer electrolyte plasticized with PEG-aluminate ester for rechargeable lithium ion battery[J].Solid state ionics,2006(9/10):843-846. |
| [11] | Zheng Honghe.The electrolyte of lithium ion bat-tery[M].北京:化学工业出版社,2007:169-174. |
| [12] | Wu-Huan Hou;Chuh-Yung Chen .Studies on comb-like polymer electrolyte with a nitrile group[J].Electrochimica Acta,2004(13):2105-2112. |
| [13] | Hou Wuhuan;Chen Chuhyung et al.The environment of lithium ions and conductivity of comb-like polymer electrolyte with a chelating functional group[J].Polymer,2003,44:2983. |
| [14] | Colin J E;Vincent A et al.Electrochemical measure-ment of transference numbers in polymer electrolytes[J].Polymer,1987,28:2324-2328. |
| [15] | Yuki Kato;Shoichi Yokoyama;Takeshi Yabe;Hiromasa Ikuta;Yoshiharu Uchimoto;Masataka Wakihara .Ionic conductivity and transport number of lithium ion in polymer electrolytes containing PEG-borate ester[J].Electrochimica Acta,2004(2/3):281-284. |
| [16] | Amine K;Wang QZ;Vissers DR;Zhang ZC;Rossi NAA;West R .Novel silane compounds as electrolyte solvents for Li-ion batteries[J].Electrochemistry communications,2006(3):429-433. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%