Acid‐in‐Clay Electrolyte for Wide‐Temperature‐Range and Long‐Cycle Proton Batteries
Name
Advanced Materials - 2022 - Wang - Acid‐in‐Clay Electrolyte for Wide‐Temperature‐Range and Long‐Cycle Proton Batteries.pdf
Description
Published version
Size
1.46 MB
Format
Adobe PDF
Checksum (MD5)
ecf853e1c7c798ea9add31f6a4a78644
Author(s)
Wang, Shitong
Jiang, Heng
Dong, Yanhao
Clarkson, David
Zhu, He
Settens, Charles M
Ren, Yang
Nguyen, Thanh
Han, Fei
Fan, Weiwei
Date Issued
June 2022
Journal
Advanced Materials
Publisher
Wiley
Citation
Wang, Shitong, Jiang, Heng, Dong, Yanhao, Clarkson, David, Zhu, He et al. 2022. "Acid‐in‐Clay Electrolyte for Wide‐Temperature‐Range and Long‐Cycle Proton Batteries." Advanced Materials, 34 (23).
Version
Final published version
Abstract
Proton conduction underlies many important electrochemical technologies. A family of new proton electrolytes is reported: acid-in-clay electrolyte (AiCE) prepared by integrating fast proton carriers in a natural phyllosilicate clay network, which can be made into thin-film (tens of micrometers) fluid-impervious membranes. The chosen example systems (sepiolite-phosphoric acid) rank top among the solid proton conductors in terms of proton conductivities (15 mS cm-1 at 25 °C, 0.023 mS cm-1 at -82 °C), electrochemical stability window (3.35 V), and reduced chemical reactivity. A proton battery is assembled using AiCE as the solid electrolyte membrane. Benefitting from the wider electrochemical stability window, reduced corrosivity, and excellent ionic selectivity of AiCE, the two main problems (gassing and cyclability) of proton batteries are successfully solved. This work draws attention to the element cross-over problem in proton batteries and the generic "acid-in-clay" solid electrolyte approach with superfast proton transport, outstanding selectivity, and improved stability for room- to cryogenic-temperature protonic applications.
MIT Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
Massachusetts Institute of Technology. Department of Chemical Engineering
MIT Materials Research Laboratory
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1002/adma.202202063
