Eliminating chemo-mechanical degradation of lithium solid-state battery cathodes during >4.5 V cycling using amorphous Nb₂O₅ coatings.

ABSTRACT: Lithium solid-state batteries offer improved safety and energy density. However, the limited stability of solid electrolytes (SEs), as well as irreversible structural and chemical changes in the cathode active material, can result in inferior electrochemical performance, particularly during high-voltage cycling (>4.3 V vs Li/Li⁺). Therefore, new materials and strategies are needed to stabilize the cathode/SE interface and preserve the cathode material structure during high-voltage cycling. Here, we introduce a thin (~5 nm) conformal coating of amorphous Nb₂O₅ on single-crystal LiNi_0.5Mn_0.3Co_0.2O₂ cathode particles using rotary-bed atomic layer deposition (ALD). Full cells with Li₄Ti₅O_12<

SUBMITTER: Jangid MK 

PROVIDER: S-EPMC11599776 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature