An All-Solid-State Carbon-Air Battery Reaching an Output Power over 10 W and a Specific Energy of 3600 Wh kg-1
No Thumbnail Available
Access rights
openAccess
acceptedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Date
2021-01-15
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
Series
Chemical Engineering Journal, Volume 404
Abstract
Carbon-air batteries have a very high theoretical specific energy. However, they have not been given sufficient attention because of the challenges associated with optimizing the battery design and making it rechargeable. Here we report a novel carbon-air battery stack based on solid oxide electrolyte which enables high operating temperature. The battery is composed of a tubular membrane electrode assembly (MEA), with a solid oxide electrolyte layer sandwiched between two porous electrodes, and carbon powder filled inside the MEA tube. By introducing a row of holes along the length direction of the MEA tube for current collection, the performance of the battery can be significantly enhanced because of shortened current paths. By using a removable quartz plug to stuff the open end of the MEA tube, the battery becomes mechanically rechargeable. Several batteries can be assembled into a stack by connecting the batteries in electrical series through the holes for current collection. A 3-battery-stack operating at 800 °C displays an output power of 11.0 W, corresponding to ∼160 mW cm-2. With an overall carbon powder of ∼10 g, the stack discharges at 0.5 A and ∼2.75 V for 26 h, revealing a specific energy of ∼3600 Wh kg-1, which is significantly higher than those of the state-of-the-art metal-air batteries.Description
Keywords
carbon-air battery, all-solid-state, tubular 3-battery-stack, improved current collection, mechanically rechargeable
Other note
Citation
Yan, X, Zhou, M, Zhang, Y, Qiu, Q, Chen, Q, Cai, W, Tang, Y & Liu, J 2021, ' An All-Solid-State Carbon-Air Battery Reaching an Output Power over 10 W and a Specific Energy of 3600 Wh kg-1 ', Chemical Engineering Journal, vol. 404, 127057 . https://doi.org/10.1016/j.cej.2020.127057