Fig. 3: HPPC testing and mechanical stability.
From: Transition metal-doped Ni-rich layered cathode materials for durable Li-ion batteries
a DCIR (direct current internal resistance) graphs of the six cathodes as a function of SOC at 1st and 50th cycle. b Cross-sectional SEM images of NC90, Mg-NC90, Al-NC90, Ti-NC90, Ta-NC90, and Mo-NC90, charged to 4.5 V after 50 cycles.
