Restricted Research - Award List, Note/Discussion Page
Fiscal Year: 2023
124 University of North Texas (142012)
Principal Investigator: Young,Marcus Lynn
Total Amount of Contract, Award, or Gift (Annual before 2011): $ 200,000
Exceeds $250,000 (Is it flagged?): No
Start and End Dates: 1/1/23 - 12/31/24
Restricted Research: YES
Academic Discipline: Materials Science & Engineer
Department, Center, School, or Institute: College of Engineering
Title of Contract, Award, or Gift: In Situ Imaging and Phase Analysis of Live Cell Lead Battery Materials from Auxiliary Battery Cycling Testing Regimes
Name of Granting or Contracting Agency/Entity:
Consortium for Battery Innovation
CFDA:
Program Title: none
Note:
Innovation: Imaging and phase analysis of live cell lead battery materials which will allow for identification of electrochemical processes within the battery, resulting in improvements in lead battery performance. The proposed techniques will be performed ex situ on aged battery materials according to IEC testing standards on large cells and mini-cells with and without additives (bismuth oxide for the positive electrode) created by East Penn Manufacturing Co., Inc. and RSR Technologies. The non-destructive in situ experiments on the mini-cells will also enable the observation of both amorphous and crystalline phase evolution simultaneously in these live cell lead battery materials. Coupling these techniques with non-destructive tomographic imaging will help the visual interpretation. Lastly, ex situ TEM and LEAP experiments will complement the advanced X-ray imaging and X-ray scattering techniques by further identifying the observed electrochemical processes, especially on aged samples, which has not been done previously. The goal of the project is to identify electrochemical processes in live cell lead battery materials in the auxiliary battery cycling testing regimes from mini-cell and 12V batteries, specifically addressing PbO2 formation on positive active material, like carbon. The objective of the project is to utilize advanced characterization techniques to evaluate the structural, chemical, and thermal properties of the materials, specifically focused on the positive electrode, by: • Performing non-destructive ex situ and in situ X-ray imaging of electrochemical processes in the various components in live cell lead battery materials. • Utilizing non-destructive ex situ and in situ synchrotron radiation X-ray diffraction (SR-XRD) with combined radiography/tomography to investigate phase evolution and crystallographic orientation within live cell battery materials before, during, or after electrochemical testing. SR-XRD will also involve small angle X-ray scattering (SAXS) and wide angle X-ray scattering (WAXS), thus, allowing for non-destructive observation simultaneously of both amorphous and crystalline phase evolution, for the first time, in live cell lead battery materials, specifically to identify mechanisms of PbO2 formation and the role of ppm Bi. Proposals will be submitted to APS and DESY, where active collaborations are already underway at both facilities. • Comparing and correlating results from the mini-cells to larger 12V batteries from both East Penn Manufacturing Co., Inc. and RSR Technologies by investigating micro- and nano-structural features in live cell lead battery materials before and after electrochemical testing using advanced microscopy techniques, such as transmission electron microscopy (TEM) and 3D local electrode atom probe (LEAP).
Discussion: No discussion notes