Self-assembled NiCo2O4 microspheres for hybrid supercapacitor applications

Zhang, Hanzhuo; Han, Jinxun; Xu, Jingzheng; Ling, Yihan; Ou, Xuemei

doi:10.1007/s10853-022-06967-6

Cited by 21 publications

(11 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The HSC delivers the maximum energy density of 49.87 Wh kg −1 at the power density of 854.45 W kg −1 . Even at a high power density of 25.42 kW kg −1 , the HSC still preserves an energy density of 28.00 Wh kg −1 , which are superior to previously reported HSCs, presented in Table S1 5,15,17,37,43,60,63 . Figure 8B exhibits the cyclic performance of the HSC verified at a current density of 5 A g −1 over 10 000 cycles.…”

Section: Resultsmentioning

confidence: 79%

“…Even at a high power density of 25.42 kW kg À1 , the HSC still preserves an energy density of 28.00 Wh kg À1 , which are superior to previously reported HSCs, presented in Table S1. 5,15,17,37,43,60,63 Figure 8B exhibits the cyclic performance of the HSC verified at a current density of 5 A g À1 over 10 000 cycles. Interestingly, the capacitance retention is about 98.26% of its initial capacitance even after 3000 cycles.…”

Section: Resultsmentioning

confidence: 99%

“…3,4 The energy density (ED) of the SCs can be considerably enhanced by increasing the specific capacity/capacitance (C) and/or the voltage (V) of the device based on the E ¼ 1 2 CV 2 expression. 5,6 Consequently, the development of hybrid SCs (HSCs) is emerging as a feasible strategy by integrating appropriate capacitive-type (nagatrode) and battery-type (positrode) electrode materials to boost the energy density and expand the operating voltage window of SCs. [6][7][8] Moreover, the electrochemical properties of the HSCs are incredibly reliant on the performance of the high efficient battery-type electroactive electrode materials.…”

Section: Introductionmentioning

confidence: 99%

“…However, the major bottleneck for practical applications of SCs is to boost their energy density without sacrificing power density and life cycle to meet the increasing energy demands 3,4 . The energy density (ED) of the SCs can be considerably enhanced by increasing the specific capacity/capacitance (C) and/or the voltage (V) of the device based on the

E = \frac{1}{2} C {normalV}^{2}

expression 5,6 . Consequently, the development of hybrid SCs (HSCs) is emerging as a feasible strategy by integrating appropriate capacitive‐type (nagatrode) and battery‐type (positrode) electrode materials to boost the energy density and expand the operating voltage window of SCs 6‐8 .…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications

Sivakumar

Raj

Kulandaivel

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

The rational strategy to design the well-ordered morphology of the metal oxides with defective engineering and tailoring them into specific electrode fabrication can significantly improve their electrochemical properties for high-performance energy storage systems. Herein, we adopted an effective strategy to introduce oxygen-defect into the well-ordered three-dimensional flower-like CoMoO 4 nanoarchitecture. The Co-Mo precursor leads to the introduction of oxygendefects into the CoMoO 4 (rCMO) nanoarchitecture during the heat-treatment under an oxygen-controlled environment (argon). The oxygen-defects in the material could facilitate abundant electroactive sites and intrinsically enhance the conductivity and supercapacitor performance. The oxygen-defect CoMoO 4 (rCMO) exhibits a specific capacity of 531 mAh g À1 at a current density of 1 A g À1 compared to the pristine CoMoO 4 (CMO; ambient atmosphere) of 322 mAh g À1 under the same current density. Meanwhile, the fabricated hybrid supercapacitor (HSC) of rCMO//AC provides a maximum specific capacitance of 159 F g À1 . Further, it distributes an energy density of 49.87 Wh kg À1 at the power density of 845.45 W kg À1 with an excellent cyclic life of ~91.03% over 10 000 cycles.

show abstract

Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

E = \frac{1}{2} C {normalV}^{2}

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications

Sivakumar

Raj

Kulandaivel

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

show abstract

“…A lack of symmetry in the pairs of cathodic and anodic peaks is evident, which demonstrates pseudocapacitance. These redox peaks are assigned to reversible faradic reactions between Fe 2+ and Fe 3+ [ 23 ]. By increasing scan rates, distance between oxidation peak and reduction peak increases, which is due to the resistance of electrode.…”

Section: Resultsmentioning

confidence: 99%

Magnetite Nanoparticles In-Situ Grown and Clustered on Reduced Graphene Oxide for Supercapacitor Electrodes

et al. 2022

Self Cite

View full text Add to dashboard Cite

Fe3O4 nanoparticles with average sizes of 3–8 nm were in-situ grown and self-assembled as homogeneous clusters on reduced graphene oxide (RGO) via coprecipitation with some additives, where RGO sheets were expanded from restacking and an increased surface area was obtained. The crystallization, purity and growth evolution of as-prepared Fe3O4/RGO nanocomposites were examined and discussed. Supercapacitor performance was investigated in a series of electrochemical tests and compared with pure Fe3O4. In 1 M KOH electrolyte, a high specific capacitance of 317.4 F g−1 at current density of 0.5 A g−1 was achieved, with the cycling stability remaining at 86.9% after 5500 cycles. The improved electrochemical properties of Fe3O4/RGO nanocomposites can be attributed to high electron transport, increased interfaces and positive synergistic effects between Fe3O4 and RGO.

show abstract

Ni–Mo–O@Ni–P nanowires as binder-free electrodes for aqueous asymmetric supercapacitors with high specific capacity and excellent stability

Lei

Deng²,

Xiong³

et al. 2022

J Mater Sci

View full text Add to dashboard Cite

Self-assembled NiCo2O4 microspheres for hybrid supercapacitor applications

Cited by 21 publications

References 38 publications

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications

Magnetite Nanoparticles In-Situ Grown and Clustered on Reduced Graphene Oxide for Supercapacitor Electrodes

Ni–Mo–O@Ni–P nanowires as binder-free electrodes for aqueous asymmetric supercapacitors with high specific capacity and excellent stability

Contact Info

Product

Resources

About

Self-assembled NiCo2O4 microspheres for hybrid supercapacitor applications

Cited by 21 publications

References 38 publications

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO 4 nanoarchitecture for supercapacitor applications

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO 4 nanoarchitecture for supercapacitor applications

Magnetite Nanoparticles In-Situ Grown and Clustered on Reduced Graphene Oxide for Supercapacitor Electrodes

Ni–Mo–O@Ni–P nanowires as binder-free electrodes for aqueous asymmetric supercapacitors with high specific capacity and excellent stability

Contact Info

Product

Resources

About

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications

Impact of oxygen‐defects induced electrochemical properties of three‐dimensional flower‐like CoMoO ₄ nanoarchitecture for supercapacitor applications