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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

作者:时间:2018-07-10点击数:

PDF全文下载:  201804002.pdf

 

章编号: 16726987201804001607 DOI 10.16351/j.16726987.2018.04.002

 

李甜甜, 赵继宽*

(青岛科技大学 化学与分子工程学院,山东 青岛 266042)

 

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(MNNO3),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(NPGC/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NPGC/CoAlTMOs复合材料在2 A·g-1电流密度下比电容为4622 F·g-1,经过500次充放电循环,复合物比电容保留率为919%;电流密度增加到10 A·g-1时,其比电容为4246 F·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,NPGC/TMOs复合材料性能最佳。

关键词: 甲壳胺; 溶剂蒸发法; 过渡金属氧化物; 超级电容器

中图分类号: O 063文献标志码: A

引用格式: 李甜甜, 赵继宽. 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\[J\]. 青岛科技大学学报(自然科学版), 2018 394): 1622.

LI Tiantian, ZHAO Jikuan. Synthesis of chitosan/transition metal nitrate composite membranes and electrochemical properties of the calcinated products\[J\]. Journal of Qingdao University of Science and TechnologyNatural Science Edition), 2018, 39(4) 1622.

 

Synthesis of Chitosan/Transition Metal Nitrate Composite Membranes and

Electrochemical Properties of the Calcinated Products

 

LI Tiantian, ZHAO Jikuan

(College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)

 

Abstract: The CTS/MNNO3 compositive membranes were prepared via solvent evaporation using chitosan as organic precursor. Ndoped partially graphitized carbon/transition metal oxides composite (NPGC/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 NPGC/TMOs were investigated. Experimental results showed that, when the weight ratio of metal ions and CTS was selected as 9/80, the prepared NPGC/CoAlTMOs composite had a specific capacitance as large as 4622 F·g-1 at the current density of 2 A·g-1. After 500 chargedischarge cycles, the capacitance retention was 919%. Even at the high current density of 10 A·g-1, NPGC/CoAlTMOs composite still remained a higher specific capacity of 4246 F·g-1. The NPGC/CoAlTMOs prepared at 800 were of superior electrochemical properties to others.

Key words: chitosan; solvent evaporation; transition metal oxide; supercapacitors

 

收稿日期:  20170614

基金项目: 山东省高等学校科技计划项目(J14LC13.

作者简介: 李甜甜(1991),女,硕士研究生.*通信联系人.

 

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