Abstract
Emerging electrochemical systems relevant to energy applications including redox targeted flow batteries rely on chemical redox of solid electroactive materials using dissolved redox couples. One configuration to facilitate contact between the redox shuttles and solid material which is volume efficient is a packed bed reactor. While methods have been reported to assess the overall progression by analysis of the packed bed reactor effluent, herein analysis of the spatial progression of the chemical redox will be reported. Combination of neutron and x-ray tomography enabled assessing the pore and particle structure in the packed bed reactor and the spatial homogeneity of the reaction at different overall extents of conversion of the reactor bed. These characterization tools provide methods to probe the chemical redox processes occurring within the reactor environment.
| Original language | English |
|---|---|
| Pages (from-to) | 219-227 |
| Number of pages | 9 |
| Journal | Journal of Industrial and Engineering Chemistry |
| Volume | 133 |
| DOIs | |
| State | Published - May 25 2024 |
Funding
This research was funded by the National Science Foundation, award number 1940915. Part of this research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by Oak Ridge National Laboratory. A co-author on this manuscript is at UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan.
Keywords
- Chemical Redox
- Delithiation
- Lithium-Ion Materials
- Packed bed reactor
- Redox targeting
