Cobalt-doped zinc manganese oxide porous nanocubes with controlled morphology as positive electrode for hybrid supercapacitors

Hussain, Sk. Khaja; Yu, Jae Su

doi:10.1016/j.cej.2018.12.152

Cited by 87 publications

(30 citation statements)

References 66 publications

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“…The TEM images of PCF display identical consequence. As shown in Figure 4(c), uniform distribution of nanocages demonstrates a hierarchical porous framework of the as‐produced materials [33,34] . Moreover, the transmission electron microscope pattern in Figure 4(d) further shows the pore size and distribution of the prepared material.…”

Section: Resultsmentioning

confidence: 78%

Direct Ink Printing for Flexible Zinc‐Ion‐Hybrid Micro‐Supercapacitors Based on Hierarchical Porous Carbon as Cathode

Zhang

et al. 2021

ChemElectroChem

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Flexible artificial intelligence and rechargeable electronic devices have been the research hotpot due to the status quo of the energy crisis. However, the existing energy storage devices suffering from undesirable electrochemical performance, poor flexibility, and toxicity, have unsatisfactory practical application prospect. Owing to its unique stability, normal electrodes in energy storage equipment are built out of carbon‐based materials. Recently, zinc hybrid supercapacitors have attracted a lot of attention. Herein, a high‐performance zinc‐ion hybrid micro‐supercapacitor is successfully constructed using hierarchical honeymoon‐like porous carbon frameworks as cathode by direct ink printing method. Due to the bivalent feature of zinc and electric double layered capacitive characteristic of the porous carbon, the optimized device possesses excellent electrochemical performance of excellent specific capacity of 189.06 mA h g−1 at a current density of 1 mA cm−2, high energy density of76.38 Wh kg−1, power density of 499.94 W kg−1 and superior capacity retention of 95.71 % at 10 mA cm−2 after 1000 cycles. Through direct ink printing, the as‐assembled zinc hybrid micro‐supercapacitors based on flexible substrate exhibit outstanding flexibility with controllable active material mass loading.

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Section: Resultsmentioning

confidence: 78%

Direct Ink Printing for Flexible Zinc‐Ion‐Hybrid Micro‐Supercapacitors Based on Hierarchical Porous Carbon as Cathode

Zhang

et al. 2021

ChemElectroChem

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“…Apart from the diversity of metal oxides, the construction of metal oxides and other materials, such as hydroxides, metal quantum dots and organics, has also emerged over the past few years. [22][23][24] The chemical composition of metal oxide-based electrodes varies diversely, but fully understanding the detailed synergistic effect from different components to rationally design the electrodes still deserves further study.…”

Section: Diverse Chemical Compositionmentioning

confidence: 99%

“…Also, the combination of high energy and power has been successfully realized in hybrid asymmetric supercapacitor systems, particularly Li-ion or Na-ion hybrid systems. [22][23][24] Hence, in this tutorial review, we present the recent developments in metal oxide-based supercapacitors in detail, highlighting their importance in high energy-density integrated supercapacitors. The basic principles of the metal oxide materials and the innovative progress in multifarious supercapacitor devices have been covered intensively.…”

Section: Introductionmentioning

confidence: 99%

Metal oxide-based supercapacitors: progress and prospectives

et al. 2019

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“…[ 15–17 ] During the past, most of the efforts on hybrid Zn‐based batteries were made on the electrochemical evaluation of the hybrid features and the development of multifunctional cathode materials (e.g., Co 3 O 4 , [ 17–19 ] NiO/Ni(OH) 2 , [ 15,20,21 ] NiCo 2 O 4 , [ 16,22 ] NiCo 2 S 4 , [ 23,24 ] Ag [ 25,26 ] ) with favorable cation redox capability and decent bifunctional catalysis toward both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). [ 27–29 ] Most hybrid batteries in these works presented single‐layer electrodes with even dispersion of all functional components (catalyst/active material, conductive carbon, and binder). The rational design of the electrode structure for improving the mass transfer on a hybrid Zn battery cathode may also have a considerable influence on the battery performance, which remains largely underexplored.…”

Section: Introductionmentioning

confidence: 99%

A Function‐Separated Design of Electrode for Realizing High‐Performance Hybrid Zinc Battery

Zhong

Liu

et al. 2020

Advanced Energy Materials

101

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A rechargeable hybrid zinc battery is developed for reaching high power density and high energy density simultaneously by introducing an alkaline Zn–transition metal compound (Zn–MX) battery function into a Zn–air battery. However, the conventional single‐layer electrode design cannot satisfy the requirements of both a hydrophilic interface for facilitating ionic transfer to maximize the Zn–MX battery function and a hydrophobic interface for promoting gas diffusion to maximize the Zn–air battery function. Here, a function‐separated design is proposed, which allocates the two battery functions to the two faces of the cathode. The electrode is composed of a hydrophobic MnS layer decorated with Ni–Co–S nanoclusters that allows for smooth gas diffusion and efficient oxygen electrocatalysis and a hydrophilic NixCo1−xS2 layer that favors fast ionic transfer and superior performance for energy storage. The battery with the function‐separated electrode shows a high short‐term discharge voltage of ≈1.7 V, an excellent high‐rate galvanostatic discharge–charge with a power density up to 153 mW cm−2 at 100 mA cm−2, a good round‐trip efficiency of 75% at 5 mA cm−2, and a robust cycling stability for 330 h with an excellent voltage gap of ≈0.7 V at 5 mA cm−2.

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Cobalt-doped zinc manganese oxide porous nanocubes with controlled morphology as positive electrode for hybrid supercapacitors

Cited by 87 publications

References 66 publications

Direct Ink Printing for Flexible Zinc‐Ion‐Hybrid Micro‐Supercapacitors Based on Hierarchical Porous Carbon as Cathode

Direct Ink Printing for Flexible Zinc‐Ion‐Hybrid Micro‐Supercapacitors Based on Hierarchical Porous Carbon as Cathode

Metal oxide-based supercapacitors: progress and prospectives

A Function‐Separated Design of Electrode for Realizing High‐Performance Hybrid Zinc Battery

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