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Title: A Redox-Mediated Zinc–Air Fuel Cell
Authors: Zhang, Hang
Huang, Shiqiang
Salla, Manohar 
Zhuang, Jiahao
Gao, Mengqi
Lek, Dao Gen 
Ye, Hualin
Wang, Qing 
Issue Date: 13-Jul-2022
Publisher: American Chemical Society (ACS)
Citation: Zhang, Hang, Huang, Shiqiang, Salla, Manohar, Zhuang, Jiahao, Gao, Mengqi, Lek, Dao Gen, Ye, Hualin, Wang, Qing (2022-07-13). A Redox-Mediated Zinc–Air Fuel Cell. ACS Energy Letters : 2565-2575. ScholarBank@NUS Repository.
Abstract: Zinc–air batteries (ZABs) have recently attracted revived interest. However, critical issues pertaining to the labile zinc anode and sluggish air cathode have yet to be adequately addressed. Here, we demonstrate a redox-mediated zinc–air fuel cell (RM-ZAFC) to tackle the above problems. Upon operation, the complex cobalt triisopropanolamine serves as an electrolyte-borne electron carrier and homogeneous catalyst to boost the 4e– oxygen reduction reaction in a separate gas diffusion tank, which makes the system free of a sophisticated air electrode. With mediation by the ultrafast reaction with a phenazine derivative, zinc could be liberated from the electrode to a separate “fuel” tank at high utilization (>90%), making it feasible to be “refueled” after it is depleted. Above all, RM-ZAFC has the combined advantages of both ZABs and alkaline fuel cells and can operate with high energy density, good flexibility, scalability and safety at low cost and thus is promising for various energy storage applications.
Source Title: ACS Energy Letters
ISSN: 2380-8195
DOI: 10.1021/acsenergylett.2c01347
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