On the effect of polypyrrole on electrochemical performance of micro-sized hollow spheres of NiCo2S4 and CuCo2S4 nanoparticles

Abuali, Maryam; Arsalani, Nasser; Ahadzadeh, Iraj

doi:10.1016/j.electacta.2022.140840

Cited by 10 publications

(4 citation statements)

References 44 publications

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“…Compared to the multi-metal oxides, the multi-metal sulfides show better electrical conductivity, mechanical and thermal stability, and higher electrochemical activity [ 140 , 141 , 142 ]. Recently, many advances have been widely reported, including Ni-Co-S [ 143 , 144 , 145 , 146 , 147 , 148 ], KCu 7 S 4 [ 149 , 150 , 151 , 152 ], CuCo 2 S 4 [ 153 , 154 , 155 ], Zn-Co-S [ 156 , 157 ], Mn-Co-S [ 158 , 159 , 160 , 161 ], CuSbS 2 [ 162 , 163 ], SnCoS 2 [ 164 , 165 , 166 ].…”

Section: Recent Advances In Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Du,

Lin,

Wang

et al. 2023

Molecules

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Currently, energy storage systems are of great importance in daily life due to our dependence on portable electronic devices and hybrid electric vehicles. Among these energy storage systems, hybrid supercapacitor devices, constructed from a battery-type positive electrode and a capacitor-type negative electrode, have attracted widespread interest due to their potential applications. In general, they have a high energy density, a long cycling life, high safety, and environmental friendliness. This review first addresses the recent developments in state-of-the-art electrode materials, the structural design of electrodes, and the optimization of electrode performance. Then we summarize the possible classification of hybrid supercapacitor devices, and their potential applications. Finally, the fundamental theoretical aspects, charge-storage mechanism, and future developing trends are discussed. This review is intended to provide future research directions for the next generation of high-performance energy storage devices.

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Section: Recent Advances In Materials For Hybrid Supercapacitorsmentioning

confidence: 99%

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Du,

Lin,

Wang

et al. 2023

Molecules

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“…To reveal this answer, polypyrrole nanotubes (PNTs) have been selected as precursors due to their several advantages, such as one-dimensional structure, aromatic conjugated polymer molecules, good porosity, abundant nitrogen atoms, and anchoring the inorganic nanoparticles. , Moreover, PNT-derived carbon can reduce the ZnO and the doping nitrogen atoms can stabilize the Zn single atoms. Three-dimensional graphene aerogels have been regarded as one of the desirable candidates for supporting electrocatalysts, since they show excellent conductivity, large specific surface areas, and high mass efficiency.…”

Section: Introductionmentioning

confidence: 99%

Zn Single Atoms/Clusters/Nanoparticles Embedded in the Hybrid Carbon Aerogels for High-Performance ORR Electrocatalysis

Wei,

Chen,

Tian

et al. 2023

Inorg. Chem.

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Carbon-supported zinc single-atom catalysts have received considerable attention in the electrocatalytic oxygen reduction reaction (ORR) owing to the strong reduction capacity of zinc atoms and the abundant reserves of zinc elements. The common preparation method has been limited to the high-temperature pyrolysis of nitrogen-rich organic molecules and zinc ions, which makes it difficult to further improve the ORR performance. Herein, we first prepared ZnO/PNT/rGO aerogels as precursors via a simple hydrothermal method combined with freeze-drying, in which reduced graphene oxides (rGO) and polypyrrole nanotubes (PNT) together assembled into three-dimensional frames and numerous ZnO nanoparticles were anchored in the three-dimensional skeletons. Then, ZnO/PNT/rGO aerogels were calcined at 800 °C in the argon atmosphere, in which PNT/rGO were derived carbon aerogels, ZnO nanoparticles were reduced to Zn 0 by carbon, and generating zinc single atoms were captured by the surrounding nitrogen atoms or aggregated into Zn clusters/nanoparticles in the carbon substrates. The obtained products were Zn single atoms/clusters/ nanoparticles embedded into PNT/rGO-derived carbon aerogels, named Zn/NC catalysts. Zn/NC catalysts display a much higher half-wave potential and a larger limiting current density than pure rGO aerogels, NC, and Zn/C catalysts, indicating the synergy of excellent electronic transportation, high mass efficiency from outstanding porosity, and several active centers. Tailoring the quantity of zinc acetate can provide the optimal ORR performance with the E onset of 0.96 V, the E 1/2 of 0.845 V, and remarkable durability. This work exploits a novel strategy of carbon thermal reduction to construct high-performance Zn-based low-dimensional ORR catalysts.

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“…Yan et al reported that NiCo 2 S 4 -coated polypyrrole (PPy) using electrodeposition improves the cycle stability of the electrode (80.64% after 25,000 cycles) . Coincidentally, Abuali et al reported the effect of PPy on the electrochemical performance of CuCo 2 S 4 , and the results showed that CuCo 2 S 4 exhibited high performance (1005 F g –1 at 1 A g –1 ) after coating with PPy . Therefore, it is promising to enhance the rate performance and cycle stability of CuCo 2 S 4 through a conductive PPy coating.…”

Section: Introductionmentioning

confidence: 99%

“…20 Coincidentally, Abuali et al reported the effect of PPy on the electrochemical performance of CuCo 2 S 4 , and the results showed that CuCo 2 S 4 exhibited high performance (1005 F g −1 at 1 A g −1 ) after coating with PPy. 21 Therefore, it is promising to enhance the rate performance and cycle stability of CuCo 2 S 4 through a conductive PPy coating. Herein, the PPy@CuCo 2 S 4 @NF electrodes are prepared on NF by hydrothermal growth of CuCo-layered double hydroxides (CuCo-LDH) and successive sulfuration and then thinlayer electrodeposition of PPy.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Polypyrrole-Decorated CuCo₂S₄ Nanowires Anchored on Nickel Foam: A Promising Electrode for High-Performance Supercapacitors

Wu,

Zhang,

Lin

et al. 2023

ACS Appl. Mater. Interfaces

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The exploitation of high-performance supercapacitors is crucial to promote energy storage technologies. Benefiting from the three-dimensional conductive micronanostructures and high specific capacity of the PPy@CuCo2S4@NF (polypyrrole/copper cobalt sulfide/nickel foam) composite electrode, this electrode exhibits a high specific capacity of 1403.21 C g–1 at 1 A g–1 and a capacitance retention of 85.79% after 10,000 cycles at 10 A g–1. The assembled PPy@CuCo2S4@NF//AC aqueous hybrid supercapacitor (AHSC) reveals a wide operating potential window of 1.5 V and achieves a high specific capacity of 322.52 C g–1 at 1 A g–1 and a capacitance retention of 86.84% after 15,000 cycles at 10 A g–1. The AHSC also exhibits a high power density of 733.69 W kg–1 at an energy density of 67.19 W h kg–1, surpassing those of previously reported spinel-based supercapacitors. Ex situ X-ray diffraction and X-ray photoelectron spectroscopy results show that the CuCo2S4 spinel structure changes to CuS2 and CoS2 cube structures, and the oxidation states of Cu and Co increase during charging and discharging processes. Density functional theory calculations suggest a superior conductivity for CuCo2S4 compared to that for CuCo2O4, demonstrating that CuCo2S4 has superior electrochemical performance. These findings attest to the considerable potential of the spinel materials for advanced energy storage applications.

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On the effect of polypyrrole on electrochemical performance of micro-sized hollow spheres of NiCo2S4 and CuCo2S4 nanoparticles

Cited by 10 publications

References 44 publications

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Zn Single Atoms/Clusters/Nanoparticles Embedded in the Hybrid Carbon Aerogels for High-Performance ORR Electrocatalysis

Three-Dimensional Polypyrrole-Decorated CuCo₂S₄ Nanowires Anchored on Nickel Foam: A Promising Electrode for High-Performance Supercapacitors

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On the effect of polypyrrole on electrochemical performance of micro-sized hollow spheres of NiCo2S4 and CuCo2S4 nanoparticles

Cited by 10 publications

References 44 publications

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Electrode Materials, Structural Design, and Storage Mechanisms in Hybrid Supercapacitors

Zn Single Atoms/Clusters/Nanoparticles Embedded in the Hybrid Carbon Aerogels for High-Performance ORR Electrocatalysis

Three-Dimensional Polypyrrole-Decorated CuCo2S4 Nanowires Anchored on Nickel Foam: A Promising Electrode for High-Performance Supercapacitors

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Product

Resources

About

Three-Dimensional Polypyrrole-Decorated CuCo₂S₄ Nanowires Anchored on Nickel Foam: A Promising Electrode for High-Performance Supercapacitors