3D urchin-like of Zn-Ni-Co ternary oxide microspheres as high-performance electrodes for supercapacitors

Huang, Lianjie; Huang, Hao; Guo, Wei; Wang, Shuang

doi:10.1016/j.electacta.2022.141317

Cited by 12 publications

(3 citation statements)

References 49 publications

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“…In terms of nickel-cobalt metal oxides, Huang, LJ [26] prepared a novel sea urchin-like Zinc-nickelcobalt oxide (ZNCO) microsphere with spinel cubic structure by a simple hydrothermal method. This structure provides a larger surface area, and polymetallic species can enhance electrical conductivity, introduce external defects, and improve their electrochemical properties.…”

Section: Nickel-cobalt Metal Oxide/hydroxidementioning

confidence: 99%

Advances in Nickel-cobalt Electrode Materials for Supercapacitors

Sun,

Zhang

2023

AETR

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With the rapid development of society, supercapacitors have been widely studied in energy storage devices for their unique advantages of high energy density, good cycle stability, fast charge and discharge speed. However, the development of supercapacitors is limited by low energy density. To address this challenge, it is important to develop and prepare electrode materials with excellent electrochemical properties for supercapacitors. To improve the energy density of supercapacitors, nickel-cobalt electrode materials have been widely studied due to their advantages of high energy density, high safety and long life. In this review, the research progress in material morphology and microstructure of supercapacitors prepared from nickel-cobalt metal oxides/hydroxides, sulfides, selenides and phosphates in recent years is summarized and prospected.

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Section: Nickel-cobalt Metal Oxide/hydroxidementioning

confidence: 99%

Advances in Nickel-cobalt Electrode Materials for Supercapacitors

Sun,

Zhang

2023

AETR

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“…In recent years, spinel-type multimetal oxides have been extensively investigated as high-performance electrode materials for supercapacitors 14 , 15 . This is due to the multiple oxidation states, better electrochemical performance, and improved electrical conductivity compared to their single-metal counterparts 16 – 18 .…”

Section: Introductionmentioning

confidence: 99%

“…Thus, strategies based on the substitution of metal cations in host metal oxides and the rational design of nanostructures and microstructures have been widely employed to develop high-performance mixed-transition-metal oxide electrodes. In this regard, numerous studies of transition metal oxides composed of multiple metals, including Mn 1−x Ni x Co 2 O 4 25 , Zn–Mn–Co ternary oxide nanoneedles 26 , Zn–Ni–Co ternary oxide microspheres 27 , Cu–Zn–Co oxide nanoflakes 28 , Mn-doped NiCo 2 O 4 29 , mesoporous MnZnFe 2 O 4 nanoneedles 30 , and mixed ternary transition metal ferrites 31 have been reported. These investigations highlight the synergistic effect of incorporating multiple transition metals and the tunability of their compositions to enhance the electrochemical performance of transition metal oxides as supercapacitor electrodes.…”

Section: Introductionmentioning

confidence: 99%

Mesoporous Mn-substituted MnxZn1−xCo2O4 ternary spinel microspheres with enhanced electrochemical performance for supercapacitor applications

Dolla,

Lawal,

Kifle

et al. 2024

Sci Rep

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Extensive investigations have been carried out on spinel mixed transition metal oxide-based materials for high-performance electrochemical energy storage applications. In this study, mesoporous Mn-substituted MnxZn1−xCo2O4 (ZMC) ternary oxide microspheres (x = 0, 0.3, 0.5, 0.7, and 1) were fabricated as electrode materials for supercapacitors through a facile coprecipitation method. Electron microscopy analysis revealed the formation of microspheres comprising interconnected aggregates of nanoparticles. Furthermore, the substitution of Mn into ZnCo2O4 significantly improved the surface area of the synthesized samples. The electrochemical test results demonstrate that the ZMC3 oxide microspheres with an optimal Mn substitution exhibited enhanced performance, displaying the largest specific capacitance of 589.9 F g−1 at 1 A g−1. Additionally, the ZMC3 electrode maintained a capacitance retention of 92.1% after 1000 cycles and exhibited a significant rate capability at a current density of 10 A g−1. This improved performance can be ascribed to the synergistic effects of multiple metals resulting from Mn substitution, along with an increase in the surface area, which tailors the redox behavior of ZnCo2O4 (ZC) and facilitates charge transfer. These findings indicate that the incorporation of Mn into mixed transition metal oxides holds promise as an effective strategy for designing high-performance electrodes for energy storage applications.

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