Hierarchical zeolitic imidazolate framework-derived manganese-doped zinc oxide decorated carbon nanofiber electrodes for high performance flexible supercapacitors

Samuel, Edmund; Joshi, Bhavana; Kim, Min Woo; Kim, Yong Il; Swihart, Mark T.; Yoon, Sam S.

doi:10.1016/j.cej.2019.04.065

Cited by 94 publications

(28 citation statements)

References 54 publications

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“…To this end, ZnO-benzene-1,4-diol superlattice coatings were deposited on a cotton surface with a predeposited aluminum oxide seed layer [93]; a cotton surface was coated with Sb-ZnO or Ag-ZnO nanocomposites [89]; keratin/polylactic acid fibers were coated with ZnOgraphene quantum dots [150]; ZnO NRs were synthesized in situ on the surface of Ag-coated flax To enhance the electrical conductivity, appropriate external dopants were also used in combination with ZnO. To this end, ZnO-benzene-1,4-diol superlattice coatings were deposited on a cotton surface with a predeposited aluminum oxide seed layer [93]; a cotton surface was coated with Sb-ZnO or Ag-ZnO nanocomposites [89]; keratin/polylactic acid fibers were coated with ZnO-graphene quantum dots [150]; ZnO NRs were synthesized in situ on the surface of Ag-coated flax [95] and polyamide [98] fabrics; ZnO NRs were grown in situ on reduced graphene oxide [111] and gold [9] layers previously prepared on silk fabrics; finally, Mn-doped porous dodecahedral or star-shaped ZnO was applied to decorate carbon nanofibers [151]. To provide simultaneous electrical conductivity and hydrophobicity to cotton fibers, ZnO was applied in combination with tetradecanoic acid [81].…”

Section: Electrical Conductivitymentioning

confidence: 99%

Zinc Oxide for Functional Textile Coatings: Recent Advances

2019

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The use of ZnO for the functionalization of textile substrates is growing rapidly, since it can provide unique multifunctional properties, such as photocatalytic self-cleaning, antimicrobial activity, UV protection, flame retardancy, thermal insulation and moisture management, hydrophobicity, and electrical conductivity. This paper aims to review the recent progress in the fabrication of ZnO-functionalized textiles, with an emphasis on understanding the specificity and mechanisms of ZnO action that impart individual properties to the textile fibers. The most common synthesis and application processes of ZnO to textile substrates are summarized. The influence of ZnO concentration, particle size and shape on ZnO functionality is presented. The importance of doping and coupling procedures to enhance ZnO performance is highlighted. The need to use binding and seeding agents to increase the durability of ZnO coatings is expressed. In addition to functional properties, the cytotoxicity of ZnO coatings is also discussed. Future directions in the use of ZnO for textile functionalization are identified as well.

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Section: Electrical Conductivitymentioning

confidence: 99%

Zinc Oxide for Functional Textile Coatings: Recent Advances

2019

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“…In this way, a carbon nanofiber mat creating a fast electron-transport path could be combined with the active manganese-doped ZnO sites, resulting in a specific capacitance of ~ 500 F/g which stayed nearly fully stable for 10,000 cycles. 27 Piezoelectric electrospun poly(3-hydroxybutyrate) (PHB) nanofiber mats were used as substrates for hydrothermal deposition of ZnO. In this way, a mixture of nanoparticles and nanorods were formed, while ZnO grew preferentially in the hexagonal wurtzite structure.…”

Section: Zno On Nanofiber Substratesmentioning

confidence: 99%

“…44 In supercapacitors, carbon nanofiber mats decorated with ZnO can be used as electrodes. 27 On the other hand, electrospinning carbon precursors such as PAN, pitch and lignin with zinc acetate leads to a one-step preparation of nanofiber mats. These can afterwards be temperaturetreated to create carbon nanofibers with a large specific capacitance and high energy density as well as good cycling performance.…”

Section: Applications Of Zno Nanofibersmentioning

confidence: 99%

Recent developments in electrospun ZnO nanofibers: A short review

Błachowicz

Ehrmann

2020

Journal of Engineered Fibers and Fabrics

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Especially for the potential use as sensors, but also in all other applications in which an interaction with the environment occurs, nanofibrous materials are advantageous due to their large specific surface area. An interesting material for electrospinning is the semiconductor zinc oxide (ZnO) which is often used in photoelectric or sensory applications. Nanofibers containing ZnO can be produced, for example, by electrospinning polyvinylpyrrolidone/zinc nitrate from a dimethylformamide/ethanol solution, followed by calcination to remove the organic phase. Alternatively, the polymer/semiconductor blended nanofibers can be used which are often less brittle, but on the other hand offer less contact between ZnO and the environment. Finally, decorating a nanofiber mat with ZnO offers another possibility to prepare nanofibers with ZnO surface. Possible applications of electrospun ZnO nanofibers or nanofiber mats include gas sensing, microwave absorption, photocatalytic degradation or enhancement of supercapacitor electrodes. This short review gives an overview of the most recent electrospinning and after-treatment techniques to create pure and blended ZnO nanofibers and presents the broad variety of possible applications of this well-known semiconductor with some still surprising properties.

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“…However, the most suitable format for the electrodes in flexible SCs is still controversial and highly dependent on the final application of the device. Within this context, nanostructured conducting electrodes based on hydrogels [ 32 , 33 , 34 ], films [ 35 , 36 , 37 ], and fibers [ 38 , 39 , 40 ] have been reported for flexible SCs designed for different final applications.…”

Section: Introductionmentioning

confidence: 99%

Free-Standing, Flexible Nanofeatured Polymeric Films Prepared by Spin-Coating and Anodic Polymerization as Electrodes for Supercapacitors

et al. 2021

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Flexible and self-standing multilayered films made of nanoperforated poly(lactic acid) (PLA) layers separated by anodically polymerized poly(3,4-ethylenedioxythiophene) (PEDOT) conducting layers have been prepared and used as electrodes for supercapacitors. The influence of the external layer has been evaluated by comparing the charge storage capacity of four- and five-layered films in which the external layer is made of PEDOT (PLA/PEDOT/PLA/PEDOT) and nanoperforated PLA (PLA/PEDOT/PLA/PEDOT/PLA), respectively. In spite of the amount of conducting polymer is the same for both four- and five-layered films, they exhibit significant differences. The electrochemical response in terms of electroactivity, areal specific capacitance, stability, and coulombic efficiency was greater for the four-layered electrodes than for the five-layered ones. Furthermore, the response in terms of leakage current and self-discharge was significantly better for the former electrodes than for the latter ones.

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Hierarchical zeolitic imidazolate framework-derived manganese-doped zinc oxide decorated carbon nanofiber electrodes for high performance flexible supercapacitors

Cited by 94 publications

References 54 publications

Zinc Oxide for Functional Textile Coatings: Recent Advances

Zinc Oxide for Functional Textile Coatings: Recent Advances

Recent developments in electrospun ZnO nanofibers: A short review

Free-Standing, Flexible Nanofeatured Polymeric Films Prepared by Spin-Coating and Anodic Polymerization as Electrodes for Supercapacitors

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