Easily Obtaining Excellent Performance High‐voltage LiCoO₂ via Pr₆O₁₁ Modification

Developing an effective method to synthesize high‐performance high‐voltage LiCoO 2 is essential for its industrialization in lithium batteries (LIBs). This work proposes a simple mass‐produced strategy the first time, that is, negative temperature coefficient thermosensitive Pr 6 O 11 nanoparticles are uniformly modified on prepare @Pr (LCO@PrO) via liquid‐phase mixing combined with annealing method. Tested at 274 mA g −1 , LCO@PrO electrodes deliver excellent 4.5 V cycling performance capacity retention ratios of 90.8% and 80.5% 25 60 °C, being much larger than those 22.8% 63.2% bare LCO electrodes. Several strategies were used clearly unveil enhancement mechanism induced by modification. It discovered can improve interface compatibility, exhibit improved conductivity elevated temperature, thus enhance Li + diffusion kinetics, suppress phase transformation resulting mechanical stresses. The 450 mAh LCO@PrO‖graphite pouch cells show LIB thermal safety characteristics. Importantly, energy density such cell was increased even ~42% 5 C. extremely convenient technology feasible producing high‐energy LIBs negligible cost increase, undoubtedly providing important academic inspiration industrialization.