CUI Yanwei, GUO Lin, XIA Yucan, YANG Shuhua, CAO Bingqiang

(School of Material Science and Engineering， University of Jinan， Jinan 250022， China)

Abstract: ZIF-8-PAN composite nanofibers were prepared by electrospinning，and then ZIF-8-PAN derived porous carbon nanofibers (ZIF-8-PANC) were prepared by pre-oxidation and high-temperature carbonization. The morphology and microstructure were characterized by scanning electron microscopy and the specific surface area，pore size distribution analysis，and their electrochemical properties for zinc ion hybrid supercapacitor (ZHS) were tested. The results show that ZIF-8-PANC combines the high conductivity of carbon nanofibers and the rich porous structure of ZIF-8 derived carbon, which not only provides good conductivity, but also realizes high specific surface area and hierarchical porous structure. Therefore, ZIF-8-PANC can effectively realize the rapid transfer of electrons, ions and the high-capacity storage of zinc ions. When the current density is 0.5 A·g^-1, the specific capacity of the ZIF-8-PANC electrode reaches 240 mAh·g^-1 and exhibits excellent cycle stability.

Keywords: electrospinning technology; framework structure of zeolite imidazole esters; porous carbon nanofiber; zinc ion hybrid supercapacitor

Received： 2022-10-31，Revised：2022-11-20，Online：2022-12-02 17:51。

Funding Project：国家自然科学基金项目，编号：51702123；山东省自然科学基金项目，编号：ZR2022ME181。

First Author：崔砚伟(1997—)，男，硕士研究生，研究方向为新能源材料与器件。E-mail： CYW15621696948@163.com。

Corresponding Author:杨树华(1986—)，男，副教授，博士，硕士生导师，研究方向为新能源材料与器件。E-mail： yangshuhua78@163.com。