海藻酸钠的浓度对聚苯胺/海藻酸钠电化学性能的影响  

Effect of Sodium Alginate Concentration on the Electrochemical Performance of Polyaniline/Sodium Alginate

作　　者：陈娜丽[1,2,3] 任亚鹏[1] 翁立娟 董伟[1] 谭琳[1] 冯辉霞[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]兰州理工大学材料科学与工程学院,甘肃兰州730050 [3]省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《精细化工》2016年第4期372-376,共5页Fine Chemicals

基　　金：国家自然科学基金资助项目(51063003);甘肃省自然科学基金资助项目(1208RJZA173);国家级大学生创新创业训练计划(201410731009)~~

摘　　要：以海藻酸钠(SA)为软模板,采用原位氧化聚合法制备了聚苯胺/海藻酸钠(PANI/SA)电极材料,研究了SA的浓度对其结构、形貌及电化学性能的影响。利用傅里叶变换红外光谱(FTIR)和扫描电镜(SEM)对所制PANI/SA的结构和形貌进行了表征。在1 mol/L H2SO4溶液中,通过循环伏安法(CV)、恒电流充放电(CD)和交流阻抗法(EIS)测试了电极材料的电化学性能。结果表明:PANI/SA的比电容随聚合体系中SA质量分数的增大先升高后降低,w(SA)=0.01%时,PANI/SA为由纳米纤维相互交织缠绕的网状结构,其比电容最高(459.7F/g),较纯PANI提高了20.8%。Polyaniline/sodium alginate （PANI/SA） was synthesized by oxidative polymerization of aniline using sodium alginate （SA） as soft template. The effect of sodium alginate concentration on the structure, morphology and electrochemical performance of the as-prepared PANI/SA was studied. The structure and morphology of the products were characterized by Fourier transform infrared spectrum （FTIR） and scanning electron microscopy （SEM）. The electrochemical properties of the as-prepared PANI/SA were investigated by cyclic voltammetry （CV）, galvanostatic charge-discharge （CD） test and electrochemical impedance spectroscopy （EIS） in 1 mol/L H2SO4 aqueous electrolyte. The results showed that the specific capacitance of the prepared PANI/SA increased firstly but decreased then with the increasing of the concentration of SA. The PANI/SA appeared as a network morphology intertwined with the nanofibers and showed a higher specific capacitance of 459. 7 F/g with the SA mass fraction of 0.01% . which was an imlarovement over that of pure PANI （20. 8 % ）.

关 键 词：海藻酸钠 聚苯胺 电化学性能 功能材料 

分 类 号：O633.2[理学—高分子化学]