用于氧还原反应的原子调制铜单原子催化剂，实现高功率密度锌电池和铝空气电池

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Communications Pub Date : 2024-11-27 DOI:10.1039/d4cc05217j

Nayantara K. Wagh, Sambhaji S. Shinde, Jung-Ho Lee

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引用次数: 0

摘要

在此，我们通过溶液工艺制作了铜单原子封装空心碳氮球体（CuSA@CNS），限制了最佳电子结构，强化了铜-N4活性位点。CuSA@CNS 的半波电位为 0.95 V，具有显著的质量活性和 5000 次循环的耐久性。因此，CuSA@CNS 为锌-空气电池和铝-空气电池带来了 371 mW cm-2 和 289 mW cm-2 的创纪录高功率密度。可充电锌-空气电池显示出前所未有的小充放电电压和在 50 mA cm-2 的苛刻条件下的稳定循环，性能优于 Pt/C。

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Atomically modulated Cu single-atom catalysts for oxygen reduction reactions towards high-power density Zn– and Al–air batteries

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Atomically modulated Cu single-atom catalysts for oxygen reduction reactions towards high-power density Zn– and Al–air batteries

Herein, Cu single-atom-encapsulated hollow carbon–nitrogen spheres (CuSA@CNS) are fabricated through a solution process, confining optimal electronic structures reinforcing Cu–N₄ active sites. CuSA@CNS demonstrate a remarkable half-wave potential of 0.95 V, mass activity, and a durability of 5000 cycles. Accordingly, CuSA@CNS present record-high power densities of 371 and 289 mW cm⁻² for Zn– and Al–air batteries. The rechargeable Zn–air battery demonstrates an unprecedented small charge–discharge voltage and stable cycling for harsh operations at 50 mA cm⁻², outperforming Pt/C.

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来源期刊

Chemical Communications 化学-化学综合

CiteScore

8.60

自引率

4.10%

发文量

2705

审稿时长

1.4 months

期刊介绍： ChemComm (Chemical Communications) is renowned as the fastest publisher of articles providing information on new avenues of research, drawn from all the world''s major areas of chemical research.