Bimetallic MOF Nanosheets Decorated on Electrospun Nanofibers for High-Performance Asymmetric Supercapacitors

被引：190

作者：

Tian, Di ^{[1
]}

Song, Na ^{[1
]}

Zhong, Mengxiao ^{[1
]}

Lu, Xiaofeng ^{[1
]}

Wang, Ce ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Alan G MacDiarmid Inst, 2699 Qianjin St, Changchun 130012, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2020年 / 12卷 / 01期

基金：

中国国家自然科学基金;

关键词：

electrospun nanofibers; bimetal; metal-organic framework; electrode materials; supercapacitor; METAL-ORGANIC FRAMEWORK; POROUS CARBON NANOFIBERS; BINDER-FREE ELECTRODE; DOPED NI-MOF; ENERGY-STORAGE; OXIDE COMPOSITES; FACILE SYNTHESIS; HYBRID; FABRICATION; ARRAYS;

D O I：

10.1021/acsami.9b16420

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The rational design of metal-organic framework (MOF)-based materials with a huge specific surface area, high redox activity, and favorable conductivity is currently a hot subject for their potential usage in supercapacitor electrodes. Herein, novel bimetallic MOFs with a flowerlike nanosheet structure grown on the electrospun nanofibers (PPNF@M-Ni MOF, M = Co, Zn, Cu, Fe) have been prepared by controlling the incorporation of various types of metal ions, which display superior electrochemical performance. For example, PPNF@Co-Ni MOF possesses a large specific capacitance of 1096.2 F g(-1) (specific capacity of 548.1 C g(-1)) at 1 A g(-1) and excellent rate performance. In addition, an asymmetric solid-state device composed of PPNF@Co-Ni MOF (positive materials) and KOH-activated carbon nanofibers embedded with reduced graphene oxide (negative materials) reaches a maximum energy density of 93.6 Wh kg(-1) at the power density of 1600.0 W kg(-1) and long cycling life. This work may greatly advance the research toward the design of supported MOF-based electrode materials for a promising prospect in energy conversion and storage.

引用

页码：1280 / 1291

页数：12

共 78 条

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