Facile synthesis of mesoporous ZnCo2O4 nanosheet arrays grown on rGO as binder-free electrode for high-performance asymmetric supercapacitor

Qi, Jiqiu; Mao, Jingwen; Zhang, Anbang; Jiang, Li; He, Yezeng; Meng, Qingkun; Wei, Fuxiang; Zhang, Xuping

doi:10.1007/s10853-018-2757-7

Cited by 26 publications

(8 citation statements)

References 39 publications

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“…Several carbonaceous materials can be derived from ZnCo2O4 as composites encompassing carbon nanotubes (CNTs) 129,134 , carbon nanoparticles 97,100 , N-doped carbon 132 , reduced graphene oxide (rGO) 106,130,133 , polyaniline (PANI) 131,136 and graphitic-carbon nitride (g-C3N4) 135 in slurry-casted electrodes, and carbon 143 , N-doped carbon 138,140 , rGO 109,137,139,141,142 , polyvinylpyrrolidone (PVP) 66 and polypyrrole (PPy) 57,144 in binder-free electrodes.…”

Section: Znco2o4/carbon Materials Composite Electrodesmentioning

confidence: 99%

“…ZnCo 2 O 4 /carbon material composite electrodes. Several carbonaceous materials can be derived from ZnCo 2 O 4 as composites encompassing carbon nanotubes (CNTs), 129,134 carbon nanoparticles, 97,100 N-doped carbon, 132 reduced graphene oxide (rGO), 106,130,133 polyaniline (PANI) 131,136 and graphitic-carbon nitride (g-C 3 N 4 ) 135 in slurry-cast electrodes, and carbon, 143 N-doped carbon, 138,140 rGO, 109,137,139,141,142 polyvinylpyrrolidone (PVP) 66 and polypyrrole (PPy) 57,144 in binderfree electrodes. Accordingly, is should be possible to explore the combined effects of electric double-layer capacitance (EDLC) from carbonaceous materials, and pseudocapacitance from transition metal oxide materials.…”

Section: Znco 2 O 4 -Based Electrode Materials For Supercapacitive Ap...mentioning

confidence: 99%

“…Panel F: Reproduced with permission 106 . Copyright © 2020 American Chemical Society Binder-free electrode materials based on ZnCo2O4 and rGO composites have also been studied in the recent years 109,137,139,141,142 . ZnCo2O4/rGO intertwined sheets on NF (3222 F g -1 at 1 A g -1 ) 137 (Figure 12A) presented specific capacitance superior to other ZiCobased composite materials containing rGO such as ZnCo-layered double hydroxide@rGO/NF (2142.0 F g -1 ) 145 , ZnCo-Sulfide-rGO 3D hollow microsphere flowers (1225.1 F g -1 ) 146 or CoO-ZnO/rGO/NF (1951.8 F g -1 ) 147 .…”

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confidence: 99%

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Recent progress in ZnCo₂O₄and its composites for energy storage and conversion: a review

Gonçalves

Silva

et al. 2022

Energy Adv.

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Section: Znco2o4/carbon Materials Composite Electrodesmentioning

confidence: 99%

Section: Znco 2 O 4 -Based Electrode Materials For Supercapacitive Ap...mentioning

confidence: 99%

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confidence: 99%

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Recent progress in ZnCo₂O₄and its composites for energy storage and conversion: a review

Gonçalves

Silva

et al. 2022

Energy Adv.

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“…3d) can be deconvoluted into two type oxygen species. The peak at 531.3 eV can be assigned to the lattice oxygen atoms in ZnCo2O4, whereas the peak at 529.5 eV is the characteristic peak of -OH species [30,31]. ions in the ZCS NPs [33].…”

Section: Structural and Morphological Studies Of Zco And Zcs Npsmentioning

confidence: 99%

Zinc cobalt sulfide nanoparticles as high performance electrode material for asymmetric supercapacitor

Sun

et al. 2019

Electrochimica Acta

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Zinc cobalt sulfide (ZCS) is a promising and high performance electrode material for pseudocapacitors due to its good electrical conductivity, abundant active sites and rich valence states. In this work, zinc cobalt oxide (ZCO) nanoparticles are firstly synthesized via a hydrothermal method assisted by hexadecyltrimethyl ammonium bromide (CTAB), and then transformed into zinc cobalt sulfide nanoparticles (ZCS NPs) using a facile sulfuration process. The average diameter of ZCS NPs is estimated to be about 15 nm, which is beneficial for Faradaic redox reactions in energy storage process due to their numerous active surfaces. The ZCS NPs are then coated onto a nickel foam to form the working electrode of supercapacitors. Because the ZCS electrode has lower series and charge transfer resistance, and also higher ion diffusion rate than that of the ZCO electrode, it achieves a large specific capacitance of 1269.1 F g -1 at 0.5 A g -1 in 2 M KOH electrolyte, which is four times more than that of the ZCO electrode (e.g., 295.8 F g -1 at 0.5 A g -1 ). In addition, an asymmetric supercapacitor using the ZCS NPs as the positive electrode and activated carbon as the negative electrode is assembled, which delivers a high energy density of 45.4 Wh kg -1 at a power density of 805.0 W kg -1 , with an excellent cycling stability (91.6 % retention of the initial capacitance over 5000 cycles).

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“…5 They are usually characterized by high surface area, 6 abundantly confirmed sub-ultra-microporous, 7 3D connected pores, 8 and 200 nm particle sizes 9 indispensable for enhancing its high specific energy. These properties are found in several electrode materials such as graphene/graphene oxide, 10,11 conduction polymers, 12 carbon nanotubes, 13 template-carbon-derived, 14 and porous carbon, 15,16 synthesized by different techniques. Zang et al stated that polymer-based carbon sources have the potential to produce a high specific surface area of 3270 m 2 g À1 with a 3D pore structure made from reduced graphene oxide/ polyaniline (rGO/PANI) hybrid film.…”

Section: Introductionmentioning

confidence: 99%

Synthesis free‐template highly micro‐mesoporous carbon nanosheet as electrode materials for boosting supercapacitor performances

Taer

Apriwandi

Mardiah

et al. 2022

Intl J of Energy Research

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Summary Porous carbon 2D nanosheets (CNSs) with micro‐mesopores interconnected are indispensable for energy conversion systems and storage applications. Herein, we synthesize free‐template highly micro‐mesoporous carbon nanosheet as electrode material for boosting supercapacitor performances. The activated carbon nanosheets derived from bio‐waste were prepared by chemical impregnation followed by high‐temperature pyrolysis without hard/soft/salt template‐assisted and free‐binder adhesives. Garlic skin wastes were selected as a precursor. Furthermore, activated carbon was designed in pellet/coin solids without the addition of binder materials. The porous carbon pellets exhibit a thin 2D nanosheet structure of 15 nm followed by unique wooden labyrinth‐like and rod‐like structures. The result showed that the impregnation of different chemical concentrations increases the surface area to 273% as high as 1002.920 m2 g−1 with a total volume of 1.3270 cm3 g−1. Moreover, the mesoporosity dominated 66.4%, followed by sub‐ultra‐micropores. In the symmetric supercapacitor, the carbon nanosheet boosted the specific capacitance almost 3‐fold to 320.95 F g−1 in the aqueous electrolyte of 1 M H2SO4. The supercapacitor cell has a high energy density of 43.12 Wh kg−1 and power density of 161.99 W kg−1 at a constant current density of 1.0 A g−1. This work proposes a more effective, green, efficient, and controlled approach to obtain bio‐waste‐based porous carbon 2D nanosheet with a controlled pore structure for energy conversion and storage systems. Novelty Statement The novelty of this study is a green synthesis has possessed highly micro‐mesopores nanosheet bio‐waste. 2D nanosheet was prepared free‐template and free‐binder. Sub‐ultra‐micropores were confirmed with dominated mesoporosity of 66.8%. Carbon nanosheet boosted specific capacitance almost 3‐fold to 320.95 F g−1.

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Facile synthesis of mesoporous ZnCo2O4 nanosheet arrays grown on rGO as binder-free electrode for high-performance asymmetric supercapacitor

Cited by 26 publications

References 39 publications

Recent progress in ZnCo₂O₄and its composites for energy storage and conversion: a review

Recent progress in ZnCo₂O₄and its composites for energy storage and conversion: a review

Zinc cobalt sulfide nanoparticles as high performance electrode material for asymmetric supercapacitor

Synthesis free‐template highly micro‐mesoporous carbon nanosheet as electrode materials for boosting supercapacitor performances

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Facile synthesis of mesoporous ZnCo2O4 nanosheet arrays grown on rGO as binder-free electrode for high-performance asymmetric supercapacitor

Cited by 26 publications

References 39 publications

Recent progress in ZnCo2O4and its composites for energy storage and conversion: a review

Recent progress in ZnCo2O4and its composites for energy storage and conversion: a review

Zinc cobalt sulfide nanoparticles as high performance electrode material for asymmetric supercapacitor

Synthesis free‐template highly micro‐mesoporous carbon nanosheet as electrode materials for boosting supercapacitor performances

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Product

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Recent progress in ZnCo₂O₄and its composites for energy storage and conversion: a review

Recent progress in ZnCo₂O₄and its composites for energy storage and conversion: a review