Electrochemical and Thermal Interplay in Blended Cathodes for All Solid‐State Batteries
Source abstract
Abstract
ABSTRACT We investigate composite solid state blended cathodes composed of lithium iron phosphate (LFP), nickel cobalt manganese oxide (NMC), and halide solid electrolyte for application in all solid state batteries (ASSBs). Electrochemical characterization indicates that the blended cathode integrates the high rate capability of LFP with the high specific capacity of NMC. Synchrotron X‐ray diffraction (XRD) techniques, including spatially resolved operando micro‐diffraction, reveal asymmetric charge distribution, and lithiation gradients across the cathode depth during electrochemical cycling. Complementary thermal modeling demonstrates that the blended cathode generates less heat than pure NMC, thereby enhancing thermal stability. These results highlight the potential of blended cathodes to achieve an optimal balance between performance and safety in ASSBs and provide valuable insights for the design of microstructures for next‐generation solid state battery systems.
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Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Thermal Expansion and Ionic Conductivity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical and Aerospace Engineering Princeton University Princeton New Jersey USA
Andlinger Center for Energy and Environment Princeton University Princeton New Jersey USA
School of Mechanical Engineering Purdue University West Lafayette Indiana USA
Institute of Physical Chemistry and Center for Materials Research Justus‐Liebig‐University Giessen Giessen Germany
Department of Physics Swarthmore College Swarthmore Pennsylvania USA
School of Materials Science and Engineering Kookmin University Seoul Republic of Korea
National Synchrotron Light Source II Brookhaven National Laboratory Upton New York USA
Funding
U.S. Department of Energy · Office of Naval Research
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