Weakly coordinated Li ion in single-ion-conductor-based composite enabling low electrolyte content Li-metal batteries.

ABSTRACT: The pulverization of lithium metal electrodes during cycling recently has been suppressed through various techniques, but the issue of irreversible consumption of the electrolyte remains a critical challenge, hindering the progress of energy-dense lithium metal batteries. Here, we design a single-ion-conductor-based composite layer on the lithium metal electrode, which significantly reduces the liquid electrolyte loss via adjusting the solvation environment of moving Li⁺ in the layer. A Li||Ni_0.5Mn_0.3Co_0.2O₂ pouch cell with a thin lithium metal (N/P of 2.15), high loading cathode (21.5 mg cm^-2), and carbonate electrolyte achieves 400 cycles at the electrolyte to capacity ratio of 2.15 g Ah^-1 (2.44 g Ah^-1

SUBMITTER: Kwon H 

PROVIDER: S-EPMC10329658 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature