甲壳胺/过渡金属盐复合膜的制备及其煅烧产物的电化学性能  

Synthesis of Chitosan/Transition Metal Nitrate Composite Membranes and Electrochemical Properties of the Calcinated Products

作　　者：李甜甜[1] 赵继宽[1] LI Tiantian;ZHAO Jikuan(College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 2GG042,Chin)

机构地区：[1]青岛科技大学化学与分子工程学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2018年第4期16-22,共7页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省高等学校科技计划项目(J14LC13)

摘　　要：通过溶剂蒸发法制备了甲壳胺(CTS)/双金属硝酸盐复合膜(MN-NO_3),经氮气氛高温煅烧与空气氛回火,制备了氮掺杂的部分石墨化碳(N-PGC)/过渡金属氧化物(TMOs)复合材料,考察其作为超级电容器电极材料的电化学性能。分别研究了金属离子种类、浓度以及煅烧温度对产物结构及电化学性能的影响。实验结果表明:当金属离子与CTS的质量比为9/80时,制得的N-PGC/CoAl-TMOs复合材料在2A·g^(-1)电流密度下比电容为462.2F·g^(-1),经过500次充放电循环,复合物比电容保留率为91.9%;电流密度增加到10A·g^(-1)时,其比电容为424.6F·g^(-1),具有良好的倍率特性和循环稳定性;金属含量过高时,产物易发生团聚,导致比表面积下降;当煅烧温度为800℃时,N-PGC/TMOs复合材料性能最佳。The CTS/MN-NO3 compositive membranes were prepared via solvent evaporation using chitosan as organic precursor.N-doped partially graphitized carbon/transition metal oxides composite（N-PGC/TMOs）were obtained after calcination under N2 atmosphere and in the air,which were used as the electrode materials of supercapacitors.Effects of metal ions,concentration and calcination temperature on the electrochemical properties of N-PGC/TMOs were investigated.Experimental results showed that,when the weight ratio of metal ions and CTS was selected as 9/80,the prepared N-PGC/CoAl-TMOs composite had a specific capacitance as large as 462.2 F·g^（-1） at the current density of 2A·g^（-1）.After 500 charge-discharge cycles,the capacitance retention was 91.9%.Even at the high current den-sity of 10A·g^（-1）,N-PGC/CoAl-TMOs composite still remained a higher specific capacity of424.6 F·g^（-1）.The N-PGC/CoAl-TMOs prepared at 800℃ were of superior electrochemical properties to others.

关 键 词：甲壳胺 溶剂蒸发法 过渡金属氧化物 超级电容器 

分 类 号：O63[理学—高分子化学]