ZIF-8 nanocrystals derived N-doped carbon decorated graphene sheets for symmetric supercapacitors

Wang, Liang; Wang, Chengxin; Wang, Haifei; Jiao, Xinyan; Ouyang, Yu; Xia, Xifeng; Lei, Wu; Hao, Qingli

doi:10.1016/j.electacta.2018.09.091

Cited by 71 publications

(24 citation statements)

References 56 publications

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“…[119] Further, to address the issues of poor conductivity and structural stability in MnO 2 /graphene nanocomposites, threedimensional conductive wrapping approach was adopted to judiciously cover up the MnO 2 /graphene binary nanocomposites by CNTs or conducting polymers to reach best possible electrochemical behavior. [211,212] Such a uniform wrapping strategy led to the better anchorage of MnO 2 to the composite matrix and accordingly enhanced the capacitance, rate capability, and mechanical stability of the resultant ternary composite electrodes. [213] Agnihotri et.…”

Section: % After 10000 Cyclesmentioning

confidence: 99%

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Majumdar¹

2020

ChemElectroChem

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Manganese dioxide (MnO2) has proved itself as a popular pseudocapacitive material with low fabrication cost, high availability, low toxicity, and improved handling safety compared to many other inorganics or carbon‐based systems existing in the market. However, the specific capacitance reported to date has been far inferior to that of the theoretically predicted value (ca. 1370 Fg−1), which is mainly attributed to the issues associated with poor conductivity, nanostructure agglomeration, low porosity, rapid electrolyte‐mediated dissolution, and so forth, which have considerably limited its commercial effectiveness. Thus, to bring about improvement in the electrochemical performance of MnO2‐based supercapacitors, novel designs of MnO2 nanomaterials through composite formations with other substances, such as nanocarbons, conducting polymers or inorganic materials, namely metal oxides and sulfides, have been comprehensively explored. Extensive studies on these MnO2 binary nanocomposites revealed significant improvement in the electrochemical features compared to pristine phases; nevertheless, the achieved state is still far below practicability. Hence, scientists have opted for MnO2‐based ternary nanocomposites achieved by blending appropriate proportions the three components (MnO2 nanostructures being one of the constant components) that would promote synergism to attain suitable dimensions, crystallinity, crystal structure, conductivity, mass loading, and electrolyte selectivity so as to confer superior capacitance, charge transfer kinetics, better utilization of electroactive materials, energy and power densities, as well as improved mechanical stability and environmental adaptability. Herein, recent developments and advancements in the research of various MnO2‐based ternary nanocomposites employed for supercapacitor applications have been discussed and are compared with binary analogs with special emphasis on correlating their composition, morphology, and the electrochemical properties that are noticeably modified upon introduction of the third component. The associated challenges encountered in their progress toward commercialization and the probable ideas of persuading better strategic designs of these ternary systems for high‐performance supercapacitor applications have also been delineated.

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Section: % After 10000 Cyclesmentioning

confidence: 99%

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Majumdar¹

2020

ChemElectroChem

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“…The resultant NCGs with huge surface area (816.4 m 2 /g) show great specific capacitance value of 225.0 F/g at 0.5 A/g, excellent cyclic stability with tendency to preserve 96.6% of initially observed capacitance even after 10 000 cycles even at 2000 mA/g. 207 Zhou and colleagues introduced novel Ni/Co-MOF derived N-doped carbon with unique morphology, high porosity and utilize for supercapacitor application. The reported material fabricated through the facile solvothermal process exhibits the hollow structure with regular-shaped nanospheres and nanorods uniformly grown on electrode surface.…”

Section: Mofs Derived Porous Carbonmentioning

confidence: 99%

An overview of supercapacitors electrode materials based on metal organic frameworks and future perspectives

Yaqoob

Nооr

Iqbal

2021

Intl J of Energy Research

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“…This symmetric cell had maximum values of capacitance (28.5 F g −1 ) and energy density (12.7 W h kg −1 ) at 0.5 A g −1 with a power density of 447 W kg −1 . An easy and green synthetic process of hierarchically The composites of N-doped carbon decorated graphene sheets (NCGs) were synthesized from in situ crystal growth of ZIF-8 on GO sheets and the subsequent carbonization of ZIF-8/GO and 3 M HCl treatment [120]. With no aggregations of the graphene sheets or the ZIF-8 derived carbon, the unique sandwich-like structure of the NCGs induced highly accessible surface area for ionic diffusion and electron transport.…”

Section: Zif-8-derived Compositesmentioning

confidence: 99%

“…The composites of N-doped carbon decorated graphene sheets (NCGs) were synthesized from in situ crystal growth of ZIF-8 on GO sheets and the subsequent carbonization of ZIF-8/GO and 3 M HCl treatment [ 120 ]. With no aggregations of the graphene sheets or the ZIF-8 derived carbon, the unique sandwich-like structure of the NCGs induced highly accessible surface area for ionic diffusion and electron transport.…”

Section: Carbon-based Compositesmentioning

confidence: 99%

Porous Carbon-Based Supercapacitors Directly Derived from Metal–Organic Frameworks

Kim

Huh

2020

Materials

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Numerously different porous carbons have been prepared and used in a wide range of practical applications. Porous carbons are also ideal electrode materials for efficient energy storage devices due to their large surface areas, capacious pore spaces, and superior chemical stability compared to other porous materials. Not only the electrical double-layer capacitance (EDLC)-based charge storage but also the pseudocapacitance driven by various dopants in the carbon matrix plays a significant role in enhancing the electrochemical supercapacitive performance of porous carbons. Since the electrochemical capacitive activities are primarily based on EDLC and further enhanced by pseudocapacitance, high-surface carbons are desirable for these applications. The porosity of carbons plays a crucial role in enhancing the performance as well. We have recently witnessed that metal–organic frameworks (MOFs) could be very effective self-sacrificing templates, or precursors, for new high-surface carbons for supercapacitors, or ultracapacitors. Many MOFs can be self-sacrificing precursors for carbonaceous porous materials in a simple yet effective direct carbonization to produce porous carbons. The constituent metal ions can be either completely removed during the carbonization or transformed into valuable redox-active centers for additional faradaic reactions to enhance the electrochemical performance of carbon electrodes. Some heteroatoms of the bridging ligands and solvate molecules can be easily incorporated into carbon matrices to generate heteroatom-doped carbons with pseudocapacitive behavior and good surface wettability. We categorized these MOF-derived porous carbons into three main types: (i) pure and heteroatom-doped carbons, (ii) metallic nanoparticle-containing carbons, and (iii) carbon-based composites with other carbon-based materials or redox-active metal species. Based on these cases summarized in this review, new MOF-derived porous carbons with much enhanced capacitive performance and stability will be envisioned.

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ZIF-8 nanocrystals derived N-doped carbon decorated graphene sheets for symmetric supercapacitors

Cited by 71 publications

References 56 publications

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

An overview of supercapacitors electrode materials based on metal organic frameworks and future perspectives

Porous Carbon-Based Supercapacitors Directly Derived from Metal–Organic Frameworks

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ZIF-8 nanocrystals derived N-doped carbon decorated graphene sheets for symmetric supercapacitors

Cited by 71 publications

References 56 publications

Review on Current Progress of MnO2‐Based Ternary Nanocomposites for Supercapacitor Applications

Review on Current Progress of MnO2‐Based Ternary Nanocomposites for Supercapacitor Applications

An overview of supercapacitors electrode materials based on metal organic frameworks and future perspectives

Porous Carbon-Based Supercapacitors Directly Derived from Metal–Organic Frameworks

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Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications

Review on Current Progress of MnO₂‐Based Ternary Nanocomposites for Supercapacitor Applications