摘要
将聚丙烯腈(PAN)和聚苯乙烯(PS)经静电纺丝和碳化制备出了碳纳米纤维(CNF),以PS为原料制得的聚苯乙烯磺酸钠(PSS)为亲水修饰剂,经简单混合制备亲水性PSS/CNF复合材料。实验结果表明:PSS已成功修饰于CNF表面,得到的PSS/CNF材料的亲水性得到了大幅改善;将PSS/CNF材料作为电极时,在0.5 A/g的电流密度下,比容量高达199 F/g,具有较好的电化学性能;以一对PSS/CNF电极平行组装成的超级电容器去离子装置,在外加1.4 V电压时,可以达到16.9 mg/g的脱盐量,是由CNF组成的超级电容去离子装置脱盐量的1.5倍。且循环100圈后还能保持80%的脱盐性能,具备优良的循环稳定性。
Polyacrylonitrile(PAN) and polystyrene(PS) are electrospinned and carbonized to prepare carbon nanofibers(CNF), sodium polystyrene sulfonate(PSS) as a hydrophilic modifier is made from PS as raw material. After simple mixing, the hydrophilic PSS/CNF composite material was successfully prepared. The experimental results show that PSS has been successfully modified on the surface of CNF, and the hydrophilicity of the obtained PSS/CNF material has been greatly improved. When the PSS/CNF material is used as electrode, the specific capacity is as high as 199 F/g at a current density of 0.5 A/g, and it has good electrochemical performance. The supercapacitor deionization device assembled by a pair of PSS/CNF electrodes in parallel can achieve a desalination amount of 16.9 mg/g when a voltage of 1.4 V is applied, which is 1.5 times that of the supercapacitor deionization device composed of CNF. And 80% of the desalination performance can be maintained after 100 cycles, and it has excellent cycle stability.
作者
王金霞
WANG Jin-xia(Baicheng Normal University,Baicheng 137000,China)
出处
《塑料科技》
CAS
北大核心
2020年第9期23-26,共4页
Plastics Science and Technology
关键词
聚苯乙烯
亲水性
静电纺丝
电容去离子
碳纳米纤维
Polystyrene
Hydrophilic
Electrospinning
Capacitive deionization
Carbon nanofiber
