NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material

Mei, Hao; Huang, Zhaodi; Xu, Ben Bin; Xiao, Zhenyu; Mei, Yingjie; Zhang, Haobing; Zhang, Shiyu; Li, Dacheng; Kang, Wenpei; Sun, Dao Feng

doi:10.1007/s40820-020-0392-8

Cited by 56 publications

(30 citation statements)

References 57 publications

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“…Similarly, they also show the battery-like behaviors, which have a pair of redox peaks. In theory, the degree of capacitive effect can be qualitatively calculated following the equation: [47,48] i av b =…”

Section: Resultsmentioning

confidence: 99%

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

Jiang

et al. 2021

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SCs suitable for many different occasions. [1][2][3][4][5][6][7] However, the low energy density limits their extensive commercial applications. Based on the above, hybrid supercapacitors (HSCs) also called supercapattery with battery-type positive electrode as the energy source and electric double-layer capacitor negative electrode as the power source have been designed, it combines the dual advantages of high power density of traditional SCs and high energy density of batteries. [7][8][9][10] Further, the electrochemical properties of the HSCs are mainly determined by the battery-type electrode, so selecting suitable electrode materials or optimizing the electrode structure is essential for obtaining high-performance hybrid devices.Transition metal oxides and sulfides have become the most widely studied battery-type electrodes due to their remarkable electrochemical activity and high specific capacity. [11][12][13] For example, Chen et al. reported the self-supported Ni 3 S 2 nanosheet arrays by a two-step method. Benefiting from its unique 3D sheet structure, the electrode shows superb rate capability and energy density. [14] Kim et al. designed the independent electrode of NiMo 2 S 4 using the successive ionic layer adsorption and reaction (SILAR) method, which also showed high reversible specific capacity. [15] Although some progress has been made in the research of battery-type electrodes, the inherent physical and chemical properties of the single electrode materials may limit the further development. In order to achieve higher electrochemical performance, complex and stable electrode structures are required to be constructed.In the previous work, the first-principles calculations show that amorphous oxides (such as MnO 2 , [16] ) can produce lots of unsaturated suspension bonds, which makes them have a broad application prospect in the field of energy storage. [18][19][20] Liu et al. proposed amorphous manganese oxide as the pseudocapacitive electrode, which proved to possess excellent rate capability and high cycle stability. [21] This may be due to the fact that the loose arrangement of atoms and ions is more conducive to rapid ion transport of the active materials in the bulk of oxides. Sun et al. successfully synthesized MoO 3 by electrochemical deposition technique and pointed out that the disordered structure is likely to release the structural stress caused by the repeated ion deintercalation/intercalation behavior, thus Hybrid supercapacitors (HSCs), also called supercapattery, which can substitute for low power density batteries have attracted extensive interest. However, when HSCs comes to commercial applications, there is still space for improvement in energy density. It seems that designing of electrode with high capacity is an effective measure. Herein, amorphous-crystalline MoO 3 -Ni 3 S 2 /NF-0.5 nanosheet arrays are developed as battery-type electrodes. Specifically, the sheet-like structure of crystalline Ni 3 S 2 can achieve rich structural nanocrystallization, improving the redox reacti...

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Section: Resultsmentioning

confidence: 99%

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

Jiang

et al. 2021

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“…The electrospun Co 3 O 4 @C exhibited high rate capability in the asymmetric supercapacitor owing to the quasi-rectangular shape of the CV curves obtained at various scan rates resulting from the Faradaic reaction. The current density was increased with the increase in the sweep rate showing the fast kinetic reversibility of the ASC system. , …”

Section: Resultsmentioning

confidence: 94%

Polymer-Derived Electrospun Co₃O₄@C Porous Nanofiber Network for Flexible, High-Performance, and Stable Supercapacitors

Barik

Raulo

Jha

et al. 2020

ACS Appl. Energy Mater.

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1D nanofibers with higher surface area, small pore size, high porosity, good electrical conductivity, and relatively high production rate with high fiber interconnectivity have gained attention as energy materials. In the present study, citrate-stabilized 1D cobalt oxide nanofibers are prepared by the electrospinning technique using polyvinylpyrrolidone (PVP) polymer followed by annealing at 500 °C where PVP acts as the carbon source leading to highly porous 1D Co3O4@C nanofibers exhibiting enhanced specific capacitance. Microscopic and structural characterization illustrates that the rod-shaped Co3O4 is interlinked with each other through polymer-derived carbon in the form of a nanofiber network. The electrospun Co3O4@C nanofibers demonstrate a specific capacitance of 731.2 F g–1 at a current density of 8 A g–1 in the 0.1 M KOH electrolyte. Furthermore, the Co3O4@C nanofibers show better cyclic stability with an excellent capacity retention of 100% after 3000 continuous GCD cycles at a current density of 9 A g–1. Again, the asymmetric supercapacitor system with the PVA–KOH electrolyte was fabricated and showed a specific capacitance of 120. 8 F g–1 (12.08 mF cm–2) with an energy density of 37.75 Wh kg–1 (3.77 mWh cm–2) and power density of 1800 W kg–1 (180 mW cm–2) at 0.6 A g–1 (0.06 mA cm–2) current density. The symmetric supercapacitor shows 100% retention in specific capacitance after 4000 GCD cycles. The enhanced supercapacitor performance of 1D Co3O4@C nanofibers was attributed to their unique nanofibrous structure with greater active surface area provided by the in situ carbon, facilitating a faster ion and electron transfer.

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“…Mei et al fabricated the NiSe 2 /Ni(OH) 2 composite materials via a novel epitaxial‐like growth approach with NiSe 2 precursor. [ 93 ] The heterojunction composite achieved a high specific capacity as 909 C g −1 under 1 A g −1 and 597 C g −1 under 20 A g −1 . The ASC constructed with the NiSe 2 /Ni(OH) 2 cathode and p‐phenylenediamine‐functional rGO anode delivered a high energy density as 76.1 Wh kg −1 under 906 W kg −1 and protruding cycle capability with 82% reservation under 8000 cycles at 10 A g −1 .…”

Section: Supercapacitorsmentioning

confidence: 99%

A Review on the Conventional Capacitors, Supercapacitors, and Emerging Hybrid Ion Capacitors: Past, Present, and Future

Sun

Luo

2022

Adv Energy and Sustain Res

119

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Electrochemical energy storage (EES) devices with high‐power density such as capacitors, supercapacitors, and hybrid ion capacitors arouse intensive research passion. Recently, there are many review articles reporting the materials and structural design of the electrode and electrolyte for supercapacitors and hybrid capacitors (HCs), though these reviews always focus on individual supercapacitors or single HCs. Herein, the conventional capacitor, supercapacitor, and hybrid ion capacitor are incorporated, as the detailed description of conventional capacitors is very fundamental and necessary for the better understanding and development of supercapacitors and hybrid ion capacitors, which are often ignored. Therefore, herein, the fundamentals and recent advances of conventional capacitors, supercapacitors, and emerging hybrid ion capacitors are comprehensively and systematically summarized in terms of history, mechanisms, electrode materials, existing challenges, and perspectives. At the same time, it is believed that a comprehensive and fundamental understanding for capacitor‐related EES devices is provided in the review and has a great guiding role for future development.

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NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material

Cited by 56 publications

References 57 publications

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

Polymer-Derived Electrospun Co₃O₄@C Porous Nanofiber Network for Flexible, High-Performance, and Stable Supercapacitors

A Review on the Conventional Capacitors, Supercapacitors, and Emerging Hybrid Ion Capacitors: Past, Present, and Future

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NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material

Cited by 56 publications

References 57 publications

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

An Amorphous–Crystalline Nanosheet Arrays Structure for Ultrahigh Electrochemical Performance Supercapattery

Polymer-Derived Electrospun Co3O4@C Porous Nanofiber Network for Flexible, High-Performance, and Stable Supercapacitors

A Review on the Conventional Capacitors, Supercapacitors, and Emerging Hybrid Ion Capacitors: Past, Present, and Future

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Product

Resources

About

Polymer-Derived Electrospun Co₃O₄@C Porous Nanofiber Network for Flexible, High-Performance, and Stable Supercapacitors