Hierarchical Core-Shell 2D MOF Nanosheet Hybrid Arrays for High-Performance Hybrid Supercapacitors

2021 ◽  
Author(s):  
Qiong Bi ◽  
Qingxiang Ma ◽  
Kai Tao ◽  
Lei Han
Keyword(s):  
Surface Area ◽  
High Performance ◽  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Large Surface Area ◽  
Core Shell ◽  
Two Dimensional ◽  
Hybrid Supercapacitors ◽  
Metal Organic

Two-dimensional (2D) metal-organic frameworks (MOFs) with large surface area, ordered pores and ultrathin thickness have recently emerged as ideal electrode materials for supercapacitors (SCs). However, their straightforward applications are restricted...

Mixed-metallic MOF based electrode materials for high performance hybrid supercapacitors

2017 ◽  
Vol 5 (3) ◽  
pp. 1094-1102 ◽  
Author(s):  
Yang Jiao ◽  
Jian Pei ◽  
Dahong Chen ◽  
Chunshuang Yan ◽  
Yongyuan Hu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Electrode Material ◽  
High Performance ◽  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Supercapacitors ◽  
Metal Organic

Metal–organic frameworks (MOFs) have obtained increasing attention as a kind of novel electrode material for energy storage devices.

scholarly journals Insights into the electric double-layer capacitance of two-dimensional electrically conductive metal-organic frameworks

2021 ◽  
Author(s):  
Jamie W. Gittins ◽  
Chloe J. Balhatchet ◽  
Yuan Chen ◽  
Cheng Liu ◽  
David G. Madden ◽  
...  
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Significant Finding ◽  
Two Dimensional ◽  
Electrically Conductive ◽  
Capacitive Performance ◽  
Metal Organic ◽  
Organic Linker

Two-dimensional electrically conductive metal-organic frameworks (MOFs) have emerged as promising model electrodes for use in electric double-layer capacitors (EDLCs). However, a number of fundamental questions about the behaviour of this class of materials in EDLCs remain unanswered, including the effect of the identity of the metal node and organic linker molecule on capacitive performance and the limitations of current conductive MOFs in these devices relative to traditional activated carbon electrode materials. Herein, we address both these questions via a detailed study of the capacitive performance of the framework Cu<sub>3</sub>(HHTP)<sub>2</sub> (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) with an acetonitrile-based electrolyte, finding a specific capacitance of 110 – 114 F g<sup>−1</sup> at current densities of 0.04 – 0.05 A g<sup>−1</sup> and a modest rate capability. By, directly comparing its performance with the previously reported analogue, Ni<sub>3</sub>(HITP)<sub>2</sub> (HITP = 2,3,6,7,10,11-hexaiminotriphenylene), we illustrate that capacitive performance is largely independent of the identity of the metal node and organic linker molecule in these nearly isostructural MOFs. Importantly, this result suggests that EDLC performance in general is uniquely defined by the 3D structure of the electrodes and the electrolyte, a significant finding not demonstrated using traditional electrode materials. Finally, we probe the limitations of Cu<sub>3</sub>(HHTP)<sub>2</sub> in EDLCs, finding a limited cell voltage window of 1.3 V and only a modest capacitance retention of 81 % over 30,000 cycles, both significantly lower than state-of-the-art porous carbons. These important insights will aid the design of future conductive MOFs with greater EDLC performances.

3D hollow cage copper cobalt sulfide derived from metal–organic frameworks for high-performance asymmetric supercapacitors

CrystEngComm ◽  
2021 ◽  
Author(s):  
Jiaqi Wang ◽  
Yiling Quan ◽  
Guoxiang Wang ◽  
Dazhi Wang ◽  
Jie Xiao ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
High Performance ◽  
Solvothermal Method ◽  
Metal Organic Frameworks ◽  
Cobalt Sulfide ◽  
Large Specific Surface Area ◽  
Asymmetric Supercapacitors ◽  
Metal Organic ◽  
One Step

Metal–organic frameworks (MOFs) attracted considerable attention through their large specific surface area and excellent adjustable voids. A one-step solvothermal method is proposed herein to fabricate the 3D hollow cage copper-cobalt...

Metal–organic framework derived petal-like Co3O4@CoNi2S4 hybrid on carbon cloth with enhanced performance for supercapacitors

2020 ◽  
Vol 7 (6) ◽  
pp. 1428-1436 ◽  
Author(s):  
Dandan Han ◽  
Jinhe Wei ◽  
Yuan Zhao ◽  
Ye Shen ◽  
Yifan Pan ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Core Shell ◽  
Carbon Cloth ◽  
Step Method ◽  
Metal Organic ◽  
Organic Framework

Starting from 2D Co-based metal-organic frameworks, novel petal-like core-shell Co3O4@CoNi2S4 nanowall arrays are synthesized on carbon cloth using a facile two-step method and investigated as promising electrode materials for supercapacitors.

scholarly journals Designed construction of hierarchical NiCo2S4@polypyrrole core–shell nanosheet arrays as electrode materials for high-performance hybrid supercapacitors

RSC Advances ◽  
2017 ◽  
Vol 7 (30) ◽  
pp. 18447-18455 ◽  
Author(s):  
Shaojie Chen ◽  
Yefeng Yang ◽  
Ziyue Zhan ◽  
Jinlei Xie ◽  
Jie Xiong
Keyword(s):  
High Performance ◽  
Electrode Materials ◽  
Core Shell ◽  
Hybrid Supercapacitors ◽  
Nanosheet Arrays

In this work, we report the design and fabrication of hierarchical NiCo2S4@polypyrrole (PPy) core–shell hybrid nanosheet arrays as a novel battery-type electrode for high-performance hybrid supercapacitors.

Constructing metallic zinc–cobalt sulfide hierarchical core–shell nanosheet arrays derived from 2D metal–organic-frameworks for flexible asymmetric supercapacitors with ultrahigh specific capacitance and performance

2019 ◽  
Vol 7 (12) ◽  
pp. 7138-7150 ◽  
Author(s):  
Wei Sun ◽  
Yuchuan Du ◽  
Guangming Wu ◽  
Guohua Gao ◽  
Han Zhu ◽  
...  
Keyword(s):  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Cobalt Sulfide ◽  
Core Shell ◽  
Metallic Zinc ◽  
Asymmetric Supercapacitors ◽  
Nanosheet Arrays ◽  
Metal Organic ◽  
And Performance ◽  
Low Capacitance

Electrode materials of flexible asymmetric supercapacitors are usually suffers from low capacitance and sluggish kinetics.

Formation of graphene-wrapped multi-shelled NiGa2O4 hollow spheres and graphene-wrapped yolk–shell NiFe2O4 hollow spheres derived from metal–organic frameworks for high-performance hybrid supercapacitors

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1643-1656 ◽  
Author(s):  
Akbar Mohammadi Zardkhoshoui ◽  
Saied Saeed Hosseiny Davarani
Keyword(s):  
High Performance ◽  
Metal Organic Frameworks ◽  
Hollow Spheres ◽  
Effective Strategy ◽  
Hybrid Supercapacitors ◽  
Metal Organic

An effective strategy is developed to synthesize graphene-wrapped NiGa2O4, and graphene-wrapped NiFe2O4 for supercapacitors.

Fluoride sensing performance of fluorescent NH2-MIL-53(Al): 2D Nanosheets vs. 3D Bulk

2021 ◽  
Author(s):  
Zixuan Li ◽  
Deyi Zhan ◽  
Abdul Saeed ◽  
Nanjing Zhao ◽  
Junfeng Wang ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Active Sites ◽  
Metal Organic Frameworks ◽  
Three Dimensional ◽  
Two Dimensional ◽  
Metal Organic ◽  
2D Nanosheets ◽  
Fluoride Sensing ◽  
Sensing Performance

Due to the ultra-thin morphology, larger specific surface area and more exposed active sites, two-dimensional (2D) metal-organic frameworks (MOFs) nanosheets can break the limitations of three-dimensional (3D) MOFs in sensitivity,...

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