DOAJ Open Access 2025

Formation of surfaces oxide vacancies in porous ZnCo2O4 nanoflowers for enhanced energy storage performance

Deyang Zhang Binhe Feng Wenbo Guo Jinbing Cheng Kangwen Qiu +1 lainnya

Abstrak

Abstract A cost-effective and large-scale method for synthesizing ZnCo2O4 nanoflowers with surface oxygen vacancies as electrode materials for supercapacitors is presented. The existence of oxygen vacancies on the surface of the ZnCo2O4 nanoflowers has been confirmed through X-ray photoelectron spectroscopy (XPS). The energy bands and density of states (DOS) of ZnCo2O4 are examined using density functional theory, revealing that treatment with NaBH4 reduces the band gap of ZnCo2O4 while increasing the DOS near the Fermi level compared to pristine ZnCo2O4. Furthermore, the specific capacitance of reduced ZnCo2O4 is nearly double that of its unmodified counterpart. This straightforward and practical approach significantly enhances both conductivity and specific capacitance in metal oxides, making it applicable to other similar materials.

Topik & Kata Kunci

Materials of engineering and construction. Mechanics of materials

Penulis (6)

Deyang Zhang

Binhe Feng

Wenbo Guo

Jinbing Cheng

Kangwen Qiu

Ying Guo

Format Sitasi

APA MLA BibTeX

Zhang, D., Feng, B., Guo, W., Cheng, J., Qiu, K., Guo, Y. (2025). Formation of surfaces oxide vacancies in porous ZnCo2O4 nanoflowers for enhanced energy storage performance. https://doi.org/10.1186/s11671-025-04347-y

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1186/s11671-025-04347-y
Akses: Open Access ✓