Polyoxometalate-Based Metal-Organic Frameworks with Conductive Polypyrrole for Supercapacitors

被引：185

作者：

Wang, Hai-Ning ^{[1
,2
]}

Zhang, Mi ^{[2
]}

Zhang, A-Man ^{[2
]}

Shen, Feng-Cui ^{[2
]}

Wang, Xiao-Kun ^{[2
]}

Sun, Sheng-Nan ^{[2
]}

Chen, Yong-Jun ^{[2
]}

Lan, Ya-Qian ^{[2
]}

机构：

[1] Shandong Univ Technol, Sch Chem & Chem Engn, Zibo 255049, Shandong, Peoples R China

[2] Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Jiangsu Key Lab New Power Batteries, Coll Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 38期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

polyoxometalate-based metal-organic frameworks; polyoxometalate; conductive polypyrrole; supercapacitor; synergetic effect; SOLID-STATE SUPERCAPACITOR; GRAPHENE OXIDE; ELECTRODES; BATTERIES; DEVICES;

D O I：

10.1021/acsami.8b12194

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Metal-organic frameworks (MOFs) with high porosity could act as an ideal substitute for supercapacitors, but their poor electrical conductivities limit their electrochemical performances. In order to overcome this problem, conductive polypyrrole (PPy) has been introduced and a novel nanocomposite resulting from polyoxometalate (POM)-based MOFs (NENU-5) and PPy has been reported. It comprises the merits of POMs, MOFs, and PPy. Finally, the highly conductive PPy covering the surfaces of NENU-5 nanocrystallines can effectively improve the electron/ion transfer among NENU-5 nanocrystallines. The optimized NENU-5/PPy nanocomposite (the volume of Py is 0.15 mL) exhibits high specific capacitance (5147 mF.cm(-2)), larger than that of pristine NENU-5 (432 mF.cm(-2)). Furthermore, a symmetric supercapacitor device based on a NENU-5/PPy-0.15 nanocomposite possesses an excellent areal capacitance of 1879 mF.cm(-2), which is far above other MOF-based supercapacitors.

引用

页码：32265 / 32270

页数：6

共 46 条

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