MoO2@Cu@C Composites Prepared by Using Polyoxometalates@Metal-Organic Frameworks as Template for All-Solid-State Flexible Supercapacitor

被引：104

作者：

Zhang, Yidong ^{[1
]}

Lin, Baoping ^{[1
]}

Sun, Ying ^{[1
]}

Han, Pei ^{[1
]}

Wang, Junchuan ^{[1
]}

Ding, Xiaojing ^{[1
]}

Zhang, Xueqin ^{[1
]}

Yang, Hong ^{[1
]}

机构：

[1] Southeast Univ, Sch Chem & Chem Engn, Nanjing 211189, Jiangsu, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2016年 / 188卷

基金：

中国国家自然科学基金;

关键词：

Metal-organic framework; Flexible supercapacitor; MoO2@Cu@C; Pyrolysis; Polyoxometalates; PERFORMANCE ANODE MATERIAL; MOO2; NANORODS; COORDINATION POLYMER; MOLYBDENUM DIOXIDE; FACILE SYNTHESIS; NANOCOMPOSITES; POM; MOF; NANOSHEETS; NANOBELTS;

D O I：

10.1016/j.electacta.2015.12.037

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

We have synthesized a composite of MoO2@Cu@CusingathermolysistemplateofPOM@MOFcrystal (POM = polyoxometalates, MOF = Metal-organic frameworks), in which the Keggin-type Mo-based POMs with negative charges exist as secondary building units of Cu-based MOF. In addition, the material is confirmed to exhibit an excellent capacity of 28.33 mAh g(-1) at a current density of 1 A g(-1), which is much higher than MoO2-based supercapacitors reported before. Moreover, we have fabricated a symmetrical flexible all-solid-state device with the MoO2@Cu@C electrode using PVA-KOH gel polymer as electrolyte and separator, and it shows outstanding sTable performance retaining 91% of its highest charge capacity maintained after 5000 cycles. The present study displayed a novel thermolysis template in the term of POM@MOF and provided an accessible foundation for investigations of MoO2-based supercapacitors. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：490 / 498

页数：9

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