Mitigating degradation in high-voltage LiNi _0.5 Mn _1.5 O ₄ cathodes via Daniele Callegari, Mauro Coduri, Umberto Anselmi Tamburini, Eliana Quartarone

Micrometre-sized single-crystal LiNi _0.5 Mn _1.5 O ₄ , obtained by scalable spray pyrolysis and annealing, delivers over 110 mAh g ⁻¹ with 71% capacity retention after 1000 cycles at 1C, while suppressing microcracking and transition-metal dissolution.