Decorating MOF-Derived Nanoporous Co/C in Chain-Like Polypyrrole (PPy) Aerogel: A Lightweight Material with Excellent Electromagnetic Absorption

Sun, Xiaodong; Lv, Xuliang; Sui, Mingxu; Weng, Xiaodi; Li, Xiaopeng; Wang, Jijun

doi:10.3390/ma11050781

Cited by 39 publications

(18 citation statements)

References 40 publications

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“…Unlike the PPy structure, the peak observed around 398.5 eV in Figure 4B belonged to the quinonoid amine structure (═N) and represented the PANi in the ASA structure 55 . The peaks observed around 284.65, 285.35, and 287.9 eV in the C1s spectrum of the PPy structure shown in Figure 4C represent CC bonds, CN bonds, and C═O/CO bonds, respectively 56,57 . In Figure 4D, the peak representing the C═O/CO structure has increased.…”

Section: Resultsmentioning

confidence: 97%

An ultrahigh‐energy density and wide potential window aqueous electrolyte supercapacitor built by polypyrrole/aniline 2‐sulfonic acid modified carbon felt electrode

Yazar

Arvas

Şahin

2022

Intl J of Energy Research

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Summary In this study, excellent performance and wide operating voltage are obtained with an aqueous electrolyte. Aqueous electrolytes are attracted more attention than other electrolytes (such as organic solvents, ionic liquids) in supercapacitor applications because of their safety, low cost, nontoxicity. Polypyrrole (PPy), aniline 2‐sulfonic acid (ASA) modified electrodes are hydrothermal synthesized on carbon felt (CFt) for supercapacitor applications. We investigate the presence of the concentration of ASA on the polymerization of the PPy. Furthermore, a high operating voltage of 3.0 V asymmetric supercapacitor (ASC) with graphite plate is assembled 3 M KCI. CFt/PPy/ASA(0.02)//GP exhibits a high specific capacitance value of 902.9 F g−1 at 5 mV s−1 and after 5000 cycle‐life testing 93.6% capacitance retention at a scan rate of 1000 mV s−1. The assembled ASC has an ultrahigh‐energy density of 1005 Wh kg−1 while delivering a power density of 3000 W kg−1 at a current density of 2 A g−1. The effect of ASA concentration on the supercapacitor performance has been observed.

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Section: Resultsmentioning

confidence: 97%

An ultrahigh‐energy density and wide potential window aqueous electrolyte supercapacitor built by polypyrrole/aniline 2‐sulfonic acid modified carbon felt electrode

Yazar

Arvas

Şahin

2022

Intl J of Energy Research

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“…Conductive polymers, including polypyrrole, polythiophene and polyaniline,also draw an increasing research attention in the field of microwave absorption due to their excellent electrical conductivity [ 10 , 159 , 160 ]. For example, Sun and co -workers prepared a chain-like polypyrrole (PPy) aerogel ornamented with ZIF-67-derived Co/C composites (Co/C@PPy aerogel) using the self-assembled polymerization method [ 161 ]. The Co/C nanoparticles was mixed with pyrrole monomer and aged in mixture solvent of deionized water and anhydrite, and then aerogels were obtained after dialysis.…”

Section: Mams Derived From Mof Compositesmentioning

confidence: 99%

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

et al. 2022

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Microwave has been widely used in many fields, including communication, medical treatment and military industry; however, the corresponding generated radiations have been novel hazardous sources of pollution threating human’s daily life. Therefore, designing high-performance microwave absorption materials (MAMs) has become an indispensable requirement. Recently, metal–organic frameworks (MOFs) have been considered as one of the most ideal precursor candidates of MAMs because of their tunable structure, high porosity and large specific surface area. Usually, MOF-derived MAMs exhibit excellent electrical conductivity, good magnetism and sufficient defects and interfaces, providing obvious merits in both impedance matching and microwave loss. In this review, the recent research progresses on MOF-derived MAMs were profoundly reviewed, including the categories of MOFs and MOF composites precursors, design principles, preparation methods and the relationship between mechanisms of microwave absorption and microstructures of MAMs. Finally, the current challenges and prospects for future opportunities of MOF-derived MAMs are also discussed."Image missing"

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“…So, it has shown promising prospect in the field of MAMs. In Wang’s report, a chain-like PPy (Polypyrrole) aerogel decorated with MOF-based nanoporous Co/C (Co/C@PPy) has been successfully prepared by a self-assembled polymerization method [ 136 ]. The composite Co/C@PPy can reach the optimal RL value of − 44.76 dB at 17.32 GHz with the thickness of 2.0 mm.…”

Section: Mof-derived Pc-based Nanocomposites As Mamsmentioning

confidence: 99%

A Review on Metal–Organic Framework-Derived Porous Carbon-Based Novel Microwave Absorption Materials

et al. 2021

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The development of microwave absorption materials (MAMs) is a considerable important topic because our living space is crowed with electromagnetic wave which threatens human’s health. And MAMs are also used in radar stealth for protecting the weapons from being detected. Many nanomaterials were studied as MAMs, but not all of them have the satisfactory performance. Recently, metal–organic frameworks (MOFs) have attracted tremendous attention owing to their tunable chemical structures, diverse properties, large specific surface area and uniform pore distribution. MOF can transform to porous carbon (PC) which is decorated with metal species at appropriate pyrolysis temperature. However, the loss mechanism of pure MOF-derived PC is often relatively simple. In order to further improve the MA performance, the MOFs coupled with other loss materials are a widely studied method. In this review, we summarize the theories of MA, the progress of different MOF-derived PC‑based MAMs, tunable chemical structures incorporated with dielectric loss or magnetic loss materials. The different MA performance and mechanisms are discussed in detail. Finally, the shortcomings, challenges and perspectives of MOF-derived PC‑based MAMs are also presented. We hope this review could provide a new insight to design and fabricate MOF-derived PC-based MAMs with better fundamental understanding and practical application.

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Decorating MOF-Derived Nanoporous Co/C in Chain-Like Polypyrrole (PPy) Aerogel: A Lightweight Material with Excellent Electromagnetic Absorption

Cited by 39 publications

References 40 publications

An ultrahigh‐energy density and wide potential window aqueous electrolyte supercapacitor built by polypyrrole/aniline 2‐sulfonic acid modified carbon felt electrode

An ultrahigh‐energy density and wide potential window aqueous electrolyte supercapacitor built by polypyrrole/aniline 2‐sulfonic acid modified carbon felt electrode

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

A Review on Metal–Organic Framework-Derived Porous Carbon-Based Novel Microwave Absorption Materials

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