One-pot construction of highly oriented Co-MOF nanoneedle arrays on Co foam for high-performance supercapacitor

被引：18

作者：

Zhao, Chongjun ^{[1
]}

Ding, Yanzhen ^{[1
]}

Zhu, Zhaoqiang ^{[1
]}

Han, Shufan ^{[1
]}

Zhao, Chunhua ^{[1
]}

Chen, Guorong ^{[1
]}

机构：

[1] East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Shanghai Key Lab Adv Polymer Mat,Minist Educ, Shanghai 200237, Peoples R China

来源：

NANOTECHNOLOGY | 2021年 / 32卷 / 39期

基金：

上海市自然科学基金;

关键词：

highly oriented; Co-MOF; nanoneedle arrays; solvothermal; supercapacitor; METAL-ORGANIC FRAMEWORKS; NI-MOF; ELECTRODE MATERIAL; FACILE SYNTHESIS; POROUS CARBON; NANOSHEETS; GROWTH; FABRICATION;

D O I：

10.1088/1361-6528/ac0d1b

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Highly oriented Co-MOF nanoneedle arrays are in situ constructed on Co foam (Co-MOF@Co) by using a one-pot solvothermal strategy. As-prepared Co-MOF@Co can be directly served as a binder-free electrode for supercapacitor, which exhibits wonderful electrochemical performances, i.e. high specific capacitance (12783.0 mF cm(-2) or 1164.2 F g(-1)), exceptional cycling stability (90.5% retention over 10 000 cycles at 250 mA cm(-2)) with a loading of 10.98 mg cm(-2). Meanwhile, an asymmetric supercapacitor of AC//Co-MOF@Co delivers a high ratability (87% retention upon ten-fold current density) and high energy density of 43.4 W h kg(-1) at the power density of 145.1 W kg(-1).

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页数：9

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