Open AccessAdvanced Architectures and Relatives of Air Electrodes in Zn–Air Batteries
Author(s) -
Pan Jing,
Xu Yang Yang,
Yang Huan,
Dong Zehua,
Liu Hongfang,
Xia Bao Yu
Publication year - 2018
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.201700691
Subject(s) - battery (electricity) , electrode , nanotechnology , energy storage , materials science , sustainable energy , computer science , electrical engineering , power (physics) , renewable energy , engineering , chemistry , physics , quantum mechanics
Zn–air batteries are becoming the promising power sources for portable and wearable electronic devices and hybrid/electric vehicles because of their high specific energy density and the low cost for next‐generation green and sustainable energy technologies. An air electrode integrated with an oxygen electrocatalyst is the most important component and inevitably determines the performance and cost of a Zn–air battery. This article presents exciting advances and challenges related to air electrodes and their relatives. After a brief introduction of the Zn–air battery, the architectures and oxygen electrocatalysts of air electrodes and relevant electrolytes are highlighted in primary and rechargeable types with different configurations, respectively. Moreover, the individual components and major issues of flexible Zn–air batteries are also highlighted, along with the strategies to enhance the battery performance. Finally, a perspective for design, preparation, and assembly of air electrodes is proposed for the future innovations of Zn–air batteries with high performance.