scholarly journals Review—Metal-Organic Framework-Based Supercapacitors

Author(s):  
Zhengyun Wang ◽  
Yanyu Zhong ◽  
Nan Chenhui Wei ◽  
Lipei Jiang ◽  
Hongfang Liu

Abstract Supercapacitors as a class of energy storage devices possess high power density, outstanding reversibility and long cycle life. The development of innovative electrode materials and unconventional configurations determine the successful operation of supercapacitors. Owing to controllable porous structure and unique electrochemical behavior, great efforts have been devoted to designing and fabricating innovative metal-organic frameworks (MOFs) based supercapacitors. In this review, recent developments in MOFs related supercapacitors electrodes are summarized. Furthermore, the advances in MOFs composites for supercapactiors application including pristine MOFs, MOFs composites and MOFs-derived composites are systematically discussed by integrating charge storing principle. Finally, future prospects and opportunities in the design of MOFs related electrodes are also delineated.

2021 ◽  
Author(s):  
Qichao Song ◽  
Chunguang Yang

Abstract Todays, metal-organic frameworks (MOFs) and their derived structures have been extensively investigated as the novel electrode materials in energy storage area due to their stable porous architectures and exceptionally large specific surface area. In this study, bimetallic Ni,Zn-MOF is synthesized onto Ni foam via a novel indirect cathodic electrodeposition method for the first time. After that, the fabricated Ni,Zn-MOFs onto Ni foam was converted to corresponding bi-metal hydroxide@C/Ni foam through direct chemical treating with 6M KOH solution. The obtained Ni,Zn-MOFs/NF and Ni2 − xZnx (OH)2@C/NF electrodes are characterized through XRD, FT-IR, FE-SEM and EDS analyses. These analyses results confirmed deposition of well-defined crystalline porous sheet-like structures of Ni3 − xZnx(BTC)2 deposited onto Ni foam, where the hydroxide@C electrode was also exhibited similar morphology. As the binder-free electrode, the as-prepared Ni,Zn-MOF@Ni foam exhibited the superior storage capacities of 356.1 mAh g− 1 and 255.5 mAh g− 1 as well as good cycling stabilities of 94.2 % and 84.5 % after 6000 consecutive charge/discharge cycles at the current densities of 5 and 15 A g− 1, respectively. On the other hand, Ni,Zn-MOF derived hydroide@C/Ni foam presented the superior capacities of 545 mAh g− 1 and 406 mAh g− 1 as well as proper cycle lifes of 91.8 % and 78.3 % after 6000 cycling at the applied loads of 5 and 15 A g− 1, respectively. Based on these findings, both of these fabricated battery-type electrodes are introduced as the promising candidates for use in energy storage devices.


Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 703 ◽  
Author(s):  
Qi Li ◽  
Michael Horn ◽  
Yinong Wang ◽  
Jennifer MacLeod ◽  
Nunzio Motta ◽  
...  

Supercapacitors are a highly promising class of energy storage devices due to their high power density and long life cycle. Conducting polymers (CPs) and organic molecules are potential candidates for improving supercapacitor electrodes due to their low cost, large specific pseudocapacitance and facile synthesis methods. Graphene, with its unique two-dimensional structure, shows high electrical conductivity, large specific surface area and outstanding mechanical properties, which makes it an excellent material for lithium ion batteries, fuel cells and supercapacitors. The combination of CPs and graphene as electrode material is expected to boost the properties of supercapacitors. In this review, we summarize recent reports on three different CP/graphene composites as electrode materials for supercapacitors, discussing synthesis and electrochemical performance. Novel flexible and wearable devices based on CP/graphene composites are introduced and discussed, with an eye to recent developments and challenges for future research directions.


2017 ◽  
Vol 5 (3) ◽  
pp. 1094-1102 ◽  
Author(s):  
Yang Jiao ◽  
Jian Pei ◽  
Dahong Chen ◽  
Chunshuang Yan ◽  
Yongyuan Hu ◽  
...  

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


2018 ◽  
Vol 6 (47) ◽  
pp. 24050-24057 ◽  
Author(s):  
Chao Xu ◽  
Xueying Kong ◽  
Shengyang Zhou ◽  
Bing Zheng ◽  
Fengwei Huo ◽  
...  

Novel nanosheets prepared by interweaving ZIF-67-templated LDH nanocrystals with nanocellulose and CNTs are applied in flexible and foldable energy storage devices.


2020 ◽  
Vol 43 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Hafiz Muhammad Awais ◽  
Muhammad Jamal ◽  
Muhammad Javaid

AbstractMetal-organic frameworks (MOFs) are porous materials formed by strong bonds between metal ions and organic ligands to represent very high surface area, large pore volume, excellent chemical stability and unique morphology. Work on synthesis, structures and characteristics of many MOFs shows the importance of these frameworks with versatile applications, such as energy storage devices of excellent electrode materials, gas storage, heterogeneous catalysis, environmental hazard, assessment of chemicals and sensing of different gases. A topological property or index is a numerical invariant that predicts the physicochemical properties of the chemical compounds of the underlying molecular graph or framework. Wiener (1947) created the practice of the topological indices (TI’s) in organic molecules with the reference of boiling point of paraffin. In this paper, we study the two different metal-organic frameworks with respect to the number of increasing layers with metal and organic ligands as well. We also compute the generalized Zagreb index and generalized Zagreb connection index of these frameworks. Moreover, the various indices and connection indices are obtained by using the aforesaid generalized versions. At the end, a comparison is also included between the indices and connection indices with the help of numerical values and their 3D plots.


Author(s):  
Zhi Chang ◽  
Yu Qiao ◽  
Jie Wang ◽  
Han Deng ◽  
HaoShen Zhou

Even were regarded as one of the most promising energy storage devices, lithium–sulfur batteries are still suffering from severe “shuttle effects” which hind their further applications. In this work, a...


2017 ◽  
Vol 5 (42) ◽  
pp. 22242-22254 ◽  
Author(s):  
Amit Kumar Das ◽  
Ranadip Bera ◽  
Anirban Maitra ◽  
Sumanta Kumar Karan ◽  
Sarbaranjan Paria ◽  
...  

Metal Organic Framework based supercapacitors are one of the best energy storage devices for future portable electronics.


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