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Consequently, the atomic-to-meso multiscale structural stabilities have been significantly improved, even with a high cut-off voltage of 4.5 V vs. In this work, we develop a scalable ball-milling and sintering method to tackle this long-standing challenge by modifying LCO surface with only 1.5–3.5% ceramic solid electrolyte nanoparticles, specifically Li 1.5Al 0.5Ge 1.5(PO 4) 3 (LAGP) as an example. Scalable strategies to further enhance the performance of LCO are highly attractive.
![cobalt charge cobalt charge](https://i.ytimg.com/vi/7odyo32VvX4/mqdefault.jpg)
LiCoO 2 (LCO) possess a high theoretical specific capacity of 274 mAh g –1, and currently LCO charged to 4.48 V with a capacity of ~190–195 mAh g 1 is penetrating the commercial markets. This doped LiCoO 2 displays an exceptionally high capacity of 190 mAh/g, cyclability with 96% capacity retention over 50 cycles and significantly enhanced rate = , The dopants are found to reside in the crystal lattice of LiCoO 2, where La works as a pillar to increase the c-axis distance and Al as a positively charged center, facilitating Li + diffusion, stabilizing the structure and suppressing the phase transition during cycling, even at a high cut-off voltage of 4.5 V.
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La and Al are concurrently doped into Co-containing precursors, followed by high-temperature calcination with lithium carbonate. Here we develop a doping technique to tackle this long-standing issue of instability and thus increase the capacity of LiCoO 2. Consequently, commercial LiCoO 2 exhibits a maximum capacity of only ~165 mAh/g. Li/Li + causes significant structural instability and severe capacity fade. However, cycling LiCoO 2-based batteries to voltages greater than 4.35 V vs. Here, lithium cobalt oxides (LiCoO 2) possess a high theoretical specific capacity of 274 mAh/g.