The effects of Co and Mn on the mechanical properties of Ni-rich cathodes were investigated; results were used to regulate the mechanical stability of particles with rational concentration gradient design, and successfully resolved capacity degradation of lithium ion batteries (LIBs).
Significance and Impact
This work provides new design principles for concentration gradient cathodes towards discovery of structurally stable cathode LIB materials.
- Mechanical properties were investigated by multi-modal multi-platform elemental and structural microscopy: TEM, HRTEM, high-energy X-ray diffraction and nanoscale X-ray diffraction microscopy measurements made at the CNM and APS were correlated with 3D X-ray fluorescence measurements made at NSLS-II.
Work was performed in part at CNM.
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