التفاصيل البيبلوغرافية
| العنوان: |
Co single atoms building bifunctional catalysts for zinc-air batteries. |
| المؤلفون: |
Yang, Huijuan1 (AUTHOR), Yi, Xiaoyu1 (AUTHOR), Fan, Fan1 (AUTHOR), Li, Xiaokang1 (AUTHOR), Qin, Jian1 (AUTHOR), Xiao, Wei1 (AUTHOR), Li, Xifei1 (AUTHOR) xfli@xaut.edu.cn |
| المصدر: |
Materials Letters. Oct2023, Vol. 348, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*OXYGEN reduction, *OXYGEN evolution reactions, *OXYGEN electrodes, *CARBON nanotubes, *ATOMS, *CATALYSTS, *ELECTRIC batteries, *POWER density, *LITHIUM-air batteries |
| مستخلص: |
• Co single atoms were anchored on hierarchical porous carbon for improving ORR. • CNTs were introduced to promote the long-term stability in ZABs. • High power density of 225 mW cm−2 and specific capacity of 906 mA h g−1 are achieved. High-efficiency bifunctional catalysts will improve the sluggish kinetics on the oxygen electrode for rechargeable Zn-air batteries (ZABs). This study designed hierarchical porous carbon to load Co single atoms (SAs) and highly graphitized carbon nanotubes to stabilize carbon substrate for enhancing the activity and stability of oxygen reduction reaction and oxygen evolution. As-prepared bifunctinal catalyst endowed with a smaller overall overpotential delivers superior efficiency in ZABs, outperforming the commercial Pt/C + RuO 2 , with a cycle life over 200 h. This work provides an efficient way to construct Co SAs bifunctional catalysts by introducing multi-dimensional carbon substrate. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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