Sandwich-like GO@Co(OH)2/PANI derived from MOFs as high-performance electrode for supercapacitors

被引：14

作者：

Xu, Mengni ^{[1
]}

Guo, Hao ^{[1
]}

Xue, Rui ^{[2
]}

Wang, Mingyue ^{[1
]}

Wu, Ning ^{[1
]}

Wang, Xiaoqiong ^{[1
]}

Zhang, Junye ^{[1
]}

Zhang, Tingting ^{[1
]}

Yang, Wu ^{[1
]}

机构：

[1] Northwest Normal Univ, Coll Chem & Chem Engn, Key Lab Bioelectrochem & Environm Anal Gansu Prov, Key Lab Ecoenvironm Related Polymer Mat MOE,Gansu, Lanzhou 730070, Peoples R China

[2] Lanzhou City Univ, Coll Chem & Chem Engn, 11 Jiefang Rd, Lanzhou 730070, Gansu, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 863卷

基金：

中国国家自然科学基金;

关键词：

Supercapacitor; Polyaniline; Graphene oxide; Zeolitic imidazolate framework-67; Pseudocapacitance;

D O I：

10.1016/j.jallcom.2020.157699

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Sandwich-like layered composite materials possess a high contact area and can expose many reactive active sites, which exhibit great potential in the application of supercapacitors. In this paper, a sandwich-like composite material was synthesized based on polyaniline (PANI), graphene oxide (GO) and ZIF-67 (denoted as GO@ZIF-67/PANI). Among them, GO is designed as a deposition substrate of ZIF-67 and transfer scaffold of electrons and PANI works as a wire to connect graphene layers and nanoparticles, which increases the conductivity of the material and makes the electron transfer easier. At the current density of 1 A g(-1), the specific capacitance of the ZIF-67 composite is up to 5 times that of the ZIF-67. After alkali treatment, ZIF-67 is converted into Co(OH)(2) nanosheet (denoted as GO@Co(OH)(2)/PANI), which remarkably promotes the transfer of electrolyte ions and electrons. At the current density of 1 A g(-1), the resulting specific capacitance is 15 times more than ZIF-67. The excellent energy storage performance indicates that the prepared novel composite material has important development prospects in energy storage. (C) 2020 Published by Elsevier B.V.

引用

页数：9

共 43 条

[1] Binder free mesoporous Ag-doped Co3O4 nanosheets with outstanding cyclic stability and rate capability for advanced supercapacitor applications [J].