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Two-Dimensional Co/Co9S8 Nanoparticles Decorated N, S Dual-Doped Carbon Composite as an Efficient Electrocatalyst for Zinc-Air Battery.
- Source :
-
Journal of Alloys & Compounds . Mar2022, Vol. 897, pN.PAG-N.PAG. 1p. - Publication Year :
- 2022
-
Abstract
- • Co/Co 9 S 8 nanoparticles decorated N, S dual-doped carbon leaves was prepared via DTO molecule coating leaf-shaped ZIFs. • The functionality of DTO simultaneously optimizes 2D nanostructure and component (S doping) by the confinement effect. • The Co/Co 9 S 8 -NCL-30 exhibits excellent ORR performance, stability and zinc-air battery performance. [Display omitted] Substituting costly Pt-based oxygen reduction reaction (ORR) catalysts with highly active and stable non-precious metal catalysts is a great challenge in zinc-air batteries. Herein, we fabricated Co/Co 9 S 8 nanoparticles decorated nitrogen, sulfur dual-doped carbon leaves (Co/Co 9 S 8 -NCL) with outstanding ORR performance by pyrolysis of dithiooxamide (DTO) molecule modified two-dimensional (2D) leaf-shaped zeolitic imidazolate framework (ZIF-L). The functionality of DTO simultaneously optimizes 2D nanostructure and component (S doping) by the confinement effect due to the coordination interaction between S atoms of DTO and Co2+ in ZIF-L. Benefiting from the synergistic effect between Co-N x sites and Co/Co 9 S 8 species coupled with unique two-dimensional N, S-codoped carbon leaves, the resulting Co/Co 9 S 8 -NCL-30 exhibits a remarkable ORR activity with a half-wave potential of 0.852 V comparable to Pt/C (0.843 V) and outstanding long-term stability. Impressively, the Zn-air battery with Co/Co 9 S 8 -NCL-30 achieves high power density of 112 mW cm−2 and specific capacity of 799 mAh g−1 Zn. This work will present a new pathway to prepare highly active and durable 2D transition metal-based carbon nanomaterials in zinc-air batteries. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09258388
- Volume :
- 897
- Database :
- Academic Search Index
- Journal :
- Journal of Alloys & Compounds
- Publication Type :
- Academic Journal
- Accession number :
- 154558813
- Full Text :
- https://doi.org/10.1016/j.jallcom.2021.163108