Open AccessAll‐Solid‐State Rechargeable Air Batteries with Naphthoquinone‐Based Negative Electrodes: Improved Performance and Cyclability
Author(s) -
Miyatake Kenji,
Wada Suguru,
Guo Lin,
Xian Fang,
Liu Fanghua,
Mahmoud Ahmed Mohamed Ahmed,
Yadav Vikrant,
Wong Chun Yik
Publication year - 2025
Publication title -
energy and environmental materials
Language(s) - English
Resource type - Journals
ISSN - 2575-0356
DOI - 10.1002/eem2.12887
Subject(s) - electrode , materials science , solid state , naphthoquinone , optoelectronics , battery (electricity) , nanotechnology , engineering physics , chemistry , engineering , power (physics) , organic chemistry , physics , quantum mechanics
All‐solid‐state rechargeable air batteries are designed and fabricated using 1,4‐naphthoquinone as a negative electrode, proton‐conductive polymer membrane as a solid electrolyte, and platinum‐based oxygen diffusion as a positive electrode as an emerging energy device. 1,4‐Naphthoquinone molecules exhibit reversible redox reactions peaked at 0.28 and 0.52 V versus reversible hydrogen electrode with the polymer electrolyte similar to that in an acid aqueous solution. The all‐solid‐state rechargeable air battery cell shows an open circuit voltage of 0.83 V, a nominal voltage of 0.3–0.4 V, a discharge capacity of 83.6 mAh g −1 , and an initial Coulombic efficiency of 86.8%. The Coulombic efficiency after 15 charge–discharge cycles improves from 57.3% to 69.1% by replacing carbon black with graphite carbon as a support for the platinum catalyst in the positive electrode. Furthermore, replacing the commercial Nafion electrolyte membrane with the synthesized (in‐house) polyphenylene‐based ionomer (sulfonated polyphenylene‐quinquephenylene) electrolyte membrane improves the cycle durability of the resulting all‐solid‐state rechargeable air battery with high Coulombic efficiency retention (>98%) after 135 cycles owing to the lower oxygen permeability of the latter membrane. Overall, the present all‐solid‐state rechargeable air battery using 1,4‐naphthoquinone outperforms our previous all‐solid‐state rechargeable air battery using dihydroxybenzoquinene as a redox‐active molecule.