Diffusion-free Grotthuss topochemistry for high-rate and long-life proton batteries
- Oregon State Univ., Corvallis, OR (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Univ. of California, Riverside, CA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
The design of Faradaic battery electrodes that exhibit high rate capability and long cycle life equivalent to those of the electrodes of electrical double-layer capacitors is a big challenge. Here we report a strategy to fill this performance gap using the concept of Grotthuss proton conduction, in which proton transfer takes place by means of concerted cleavage and formation of O-H bonds in a hydrogen-bonding network. We show that in a hydrated Prussian blue analogue (Turnbull's blue) the abundant lattice water molecules with a contiguous hydrogen-bonding network facilitate Grotthuss proton conduction during redox reactions. When using it as a battery electrode, we find high-rate behaviours at 4,000 C (380 Ag-1, 508 mA cm-2), and a long cycling life of 0.73 million cycles. Furthermore these results for diffusion-free Grotthuss topochemistry of protons, in contrast to orthodox battery electrochemistry, which requires ion diffusion inside electrodes, indicate a potential direction to revolutionize electrochemical energy storage for high-power applications.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1504249
- Journal Information:
- Nature Energy, Journal Name: Nature Energy Journal Issue: 2 Vol. 4; ISSN 2058-7546
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Proton Storage in Metallic H1.75MoO3 Nanobelts through the Grotthuss Mechanism
Switching of Protonation Sites in Hydrated Nicotine via a Grotthuss Mechanism
Search for a Grotthuss mechanism through the observation of proton transfer
Journal Article
·
Sun Sep 18 20:00:00 EDT 2022
· Journal of the American Chemical Society
·
OSTI ID:1967430
Switching of Protonation Sites in Hydrated Nicotine via a Grotthuss Mechanism
Journal Article
·
Mon Jan 22 19:00:00 EST 2024
· Journal of the American Chemical Society
·
OSTI ID:2406154
Search for a Grotthuss mechanism through the observation of proton transfer
Journal Article
·
Fri Apr 21 20:00:00 EDT 2023
· Communications Chemistry
·
OSTI ID:2471535