Facile ordered ZnCo2O4@MnO2 nanosheet arrays for superior-performance supercapacitor electrode

Lin, Liyang; Huang, Mengcheng; Ning, Minliang; Wu, Kaiwen; Li, Hongwei; Hussain, Shahid; Zhao, Shuoqing

doi:10.1016/j.solidstatesciences.2018.08.007

Cited by 16 publications

(6 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, the alternating layered structure of Bi 2 O 3 makes it an interesting host for ion storage, encouraging its employment for energy storage applications. On the other side, manganese dioxide (MnO 2 ) has drawn enormous research interest owing to its high theoretical capacitance, environmental friendliness, and great abundance [19][20][21]. More importantly, it also provides a wide positive potential window in an aqueous electrolyte, resulting in high-energy-density ES devices [22].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Bi2O3-MnO2 Nanocomposite Electrode for Wide-Potential Window High Performance Supercapacitor

et al. 2019

View full text Add to dashboard Cite

In this work, we report the synthesis of a Bi2O3-MnO2 nanocomposite as an electrochemical supercapacitor (ES) electrode via a simple, low-cost, eco-friendly, and low-temperature solid-state chemical process followed by air annealing. This as-synthesized nanocomposite was initially examined in terms of its structure, morphology, phase purity, and surface area using different analytical techniques and thereafter subjected to electrochemical measurements. Its electrochemical performance demonstrated excellent supercapacitive properties in a wide potential window. Its specific capacitance was able to reach 161 F g−1 at a current density of 1A g−1 and then showed a superior rate capability up to 10 A g−1. Furthermore, it demonstrated promising cycling stability at 5 A g−1 with 95% retention even after 10,000 charge–discharge cycles in a wide potential window of 1.3 V, evidencing the synergistic impact of both Bi2O3 and MnO2 in the Bi2O3-MnO2 ES electrode. Additionally, the practical reliability of the envisioned electrode was ascertained by the fabrication of a symmetric Bi2O3-MnO2//Bi2O3-MnO2 pencil-type supercapacitor device that displayed an energy density of 18.4 Wh kg−1 at a power density of 600 W kg−1 and a substantial cyclic stability up to 5000 cycles. Subsequently, an LED was also powered at its full brightness using three of these devices connected in series in order to demonstrate the real-time application of the Bi2O3-MnO2 ES electrode.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis of Bi2O3-MnO2 Nanocomposite Electrode for Wide-Potential Window High Performance Supercapacitor

et al. 2019

View full text Add to dashboard Cite

show abstract

“…According to the Zn 2p spectra (Figure 1b), the peaks of Zn 2p 3/2 and Zn 2p 1/2 correspond to binding energies of 1044.88 and 1021.9 eV, respectively. 33 As shown in Figure 1c, the satellite peaks arise at 803.69 and 787.26 eV in Co 2p spectra. The peaks of Co 2p 3/2 and Co 2p 1/2 are located at binding energies of 794.42 and 779.67 eV, respectively.…”

Section: ■ Experimental Detailsmentioning

confidence: 99%

Ternary ZnCo₂O₄ Nanowire Electrode Materials for High-Capacitance and Flexible Electrochemical Capacitors

Sun,

Zhang,

Umar

et al. 2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Spinel-structured oxides are promising candidates for supercapacitor electrodes owing to their features of low price and environmental friendliness. However, their large-scale applications are restricted in view of their low energy density and electrical conductivity. In this work, we synthesize wire-like ZnCo2O4 nanomaterials by a facile hydrothermal avenue and a subsequent calcination process. The prepared samples possess a large specific surface area, which is beneficial for increasing active sites and shortening the ion diffusion channels. The as-assembled asymmetric supercapacitor delivers an energy density of 64 Wh kg–1 at 2880 W kg–1. And the capacitance can be maintained at 85% after 10,000 cycles at the current density of 2 A g–1. The device indicates excellent mechanical stability when bending various angles, revealing its potential application in portable energy storage devices.

show abstract

“…Metal oxides generally have larger specific capacitances than those of carbon materials and conducting polymers. Especially, ternary metal oxides, including NiCo2O4 [7,8], CuCo2O4 [9], MnCo2O4 [10,11] and ZnCo2O4 [12][13][14] have abundant electrochemical active sites, high theoretical capacitances and low cost. Therefore, they have been regarded as the promising electrode materials for SCs.…”

Section: Introductionmentioning

confidence: 99%

Co-precipitation synthesis of CuCo2O4 nanoparticles for supercapacitor electrodes with large specific capacity and high rate capability

Sun

Fang

et al. 2021

Electrochimica Acta

View full text Add to dashboard Cite

Facile ordered ZnCo2O4@MnO2 nanosheet arrays for superior-performance supercapacitor electrode

Cited by 16 publications

References 24 publications

Synthesis of Bi2O3-MnO2 Nanocomposite Electrode for Wide-Potential Window High Performance Supercapacitor

Synthesis of Bi2O3-MnO2 Nanocomposite Electrode for Wide-Potential Window High Performance Supercapacitor

Ternary ZnCo₂O₄ Nanowire Electrode Materials for High-Capacitance and Flexible Electrochemical Capacitors

Co-precipitation synthesis of CuCo2O4 nanoparticles for supercapacitor electrodes with large specific capacity and high rate capability

Contact Info

Product

Resources

About

Facile ordered ZnCo2O4@MnO2 nanosheet arrays for superior-performance supercapacitor electrode

Cited by 16 publications

References 24 publications

Synthesis of Bi2O3-MnO2 Nanocomposite Electrode for Wide-Potential Window High Performance Supercapacitor

Synthesis of Bi2O3-MnO2 Nanocomposite Electrode for Wide-Potential Window High Performance Supercapacitor

Ternary ZnCo2O4 Nanowire Electrode Materials for High-Capacitance and Flexible Electrochemical Capacitors

Co-precipitation synthesis of CuCo2O4 nanoparticles for supercapacitor electrodes with large specific capacity and high rate capability

Contact Info

Product

Resources

About

Ternary ZnCo₂O₄ Nanowire Electrode Materials for High-Capacitance and Flexible Electrochemical Capacitors