Preparation and electrochemical property of CMC/MWCNT composite using ionic liquid as solvent  

作　　者：ZHAO TingKai LIU LeHao LI GuangMing DU Li ZHAO Xing YAN Jin CHENG YouLiang DANG ALei LI TieHu 

机构地区：[1]School of Materials Science and Engineering, Northwestern Polytechnical University, Xi＇an 710072, China [2]Department of Materials Science and Engineering, Northwestern University, Evanston 60208, USA

出　　处：《Chinese Science Bulletin》2012年第14期1620-1625,共6页

基　　金：supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China (20096102120016,20116102110014);the National Natural Science Foundation of China (51172184);the Innovation Foundation of China Aerospace Science and Technology (CASC200906);the Natural Science Foundation of Shaanxi Province (2009GM6001-1);the Foundation for Fundamental Research of Northwestern Polytechnical University (JC201030)

摘　　要：Carboxymethyl cellulose sodium(CMC)/multi-walled carbon nanotube(MWCNT) composite was prepared by dissolving CMC with ionic liquid as solvent.The microstructure and electrochemical properties of CMC/MWCNTs were studied using field emission scanning electron microscopy(FE-SEM),high-resolution transmission electron microscopy(HR-TEM),X-ray diffraction(XRD) system and electrochemical workstation.The experimental results indicated that the CMC dissolved with ionic liquid could be uniformly enwrapped on the surface of MWCNTs,and the coating thickness of CMC was about 5.4 nm.There are obvious oxidation peaks in the cyclic voltammograms curves of glassy carbon electrode coated with a CMC/MWCNT composite in H2O2 phosphate buffer solution.The MWCNT content and ultrasonic time strongly affected the dispersivity and electrochemical property of CMC/MWCNT composite.While the MWCNT content and ultrasonic processing time was 2 wt% and 2 h respectively,CMC/MWCNT composite exhibited excellent electrocatalytic activity.Carboxymethyl cellulose sodium （CMC）/multi-walled carbon nanotube （MWCNT） composite was prepared by dissolving CMC with ionic liquid as solvent. The microstructure and electrochemical properties of CMC/MWCNTs were studied using field emis- sion scanning electron microscopy （FE-SEM）, high-resolution transmission electron microscopy （HR-TEM）, X-ray diffraction （XRD） system and electrochemical workstation. The experimental results indicated that the CMC dissolved with ionic liquid could be uniformly enwrapped on the surface of MWCNTs, and the coating thickness of CMC was about 5.4 nm. There are obvi- ous oxidation peaks in the cyclic voltammograms curves of glassy carbon electrode coated with a CMC/MWCNT composite in H2O2 phosphate buffer solution. The MWCNT content and ultrasonic time strongly affected the dispersivity and electrochemical property of CMC/MWCNT composite. While the MWCNT content and ultrasonic processing time was 2 wt% and 2 h respectively, CMC/MWCNT composite exhibited excellent electrocatalytic activity.

关 键 词：碳纳米管复合材料 电化学性能 离子液体 中央 溶剂 高分辨透射电子显微镜 多壁碳纳米管 羧甲基纤维素钠 

分 类 号：O631.3[理学—高分子化学]