Download file (3.05MB)
Download as zip (2.8MB)

コレクション

引用

説明:

Lithium-air batteries (LABs) are a promising technology for high-energy-density battery storage. However, their open-cell structure for oxygen exchange leads to electrolyte evaporation, which limits cycling performance under ambient conditions. In this study, we evaluate volatile amide-based electrolytes for LABs using gravimetric analysis. The cell weight change during discharge-charge cycles confirmed the two-electron oxygen reduction/evolution reactions while also revealing that electrolyte evaporation correlates with the solvent vapor pressure. This behavior significantly compromises the cycle performance of low-viscosity amide electrolyte cells. Despite this, rate-dependent cycling experiments demonstrated the superior cyclability of the low-viscosity amide electrolyte cells at high current rates (0.8 mA cm-2 or higher), conditions under which cells with a conventional tetraethylene glycol dimethyl ether (TEG)-based LAB electrolyte failed. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses showed that these cells exhibited improved rechargeability at high-rate cycles, with discharge product morphology changing to a more easily decomposable form. This electrolyte design strategy marks a significant advancement toward developing high-power, high-energy rechargeable LABs.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: amide-based electrolytes, carbon nanotubes, high-energy-density batteries, high-power batteries, lithium-air batteries

刊行年月日: 2025-09-07

出版者: Wiley-Blackwell

掲載誌:

• Energy Technology (ISSN: 21944296) 2500556

研究助成金:

• JST JPMJTQ22AQ
• JSPS 24K08154
• JSPS 24K08585
• Japan Keirin Autorace 2024M-380

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1002/ente.202500556

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-09-11 16:08:24 +0900

MDRでの公開時刻: 2025-09-09 08:17:55 +0900