Enhanced asymmetric supercapacitor performance via facile construction of Cu-MOF@Co(OH)2 heterostructure

被引:3
作者
Chen, Hai-Quan [1 ,2 ]
Yan, Xue-Xue [1 ,2 ]
Li, Yong-Shuang [1 ,2 ]
Wu, Xue-Qian [1 ]
Wu, Ya-Pan [1 ,2 ]
Li, Dong-Sheng [1 ,2 ]
机构
[1] China Three Gorges Univ, Coll Mat & Chem Engn, Key Lab Inorgan Nonmet Crystalline & Energy Conver, Yichang 443002, Peoples R China
[2] Hubei Three Gorges Lab Yichang, Yichang 443007, Hubei, Peoples R China
关键词
Cu(II); MOF; Crystal structure; Cu-MOF@Co(OH) 2 heterostructure; Supercapacitor; METAL; REDUCTION; CO;
D O I
10.1016/j.jssc.2024.124745
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Integrating metal-organic frameworks (MOFs) with transition hydroxides has the potential to enhance the inadequate electronic conductivity and address the slow diffusion of MOF materials in electrochemical applications. Herein, we synthesized a 2D Cu-MOF and successfully prepared a Cu-MOF@Co(OH)2 heterostructure using a one-step hydrothermal method on a Co(OH)2/NF (nickel foam) substrate. The hybrid Cu-MOF@Co(OH)2 material exhibits high electrochemical reactivity, resulting in enhanced pseudocapacitor performance, with a specific capacitance of 2039.8 mF cm-2 at a current density of 1.0 mA cm-2. In addition, an asymmetric twoelectrode cell was constructed using Cu-MOF@Co(OH)2/NF and activated carbon (AC)/NF, exhibiting a specific capacitance of 444.5 mF cm-2 at a current density of 1.0 mA cm-2, and demonstrating decent cycling durability with 90.1 % retention after 2000 cycles.
引用
收藏
页数:8
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