Regulating Polymer Demixing Dynamics to Construct a Low-Tortuosity Host for Stable High-Energy-Density Lithium Metal Batteries.

ABSTRACT: Lithium (Li) metal anodes, despite their exceptional theoretical capacity (3860 mAh g^-1), suffer from severe dendrite growth, electrolyte decomposition, and structural instability caused by uneven Li-ion flux and significant volume fluctuations. Here, a one-step, scalable fabrication of 3D hosts that synergistically couple tortuosity modulation with a spatially graded lithiophilicity via precise control of demixing kinetics in a nonsolvent-induced phase separation process is reported. Low-tortuosity (LT) hosts integrate vertically aligned channels for fast ion transport with a silver-gradient interface that directs bottom-up Li deposition, enabling concurrent suppression of dendrites and accommodation of plating-induced volume expansion (4.4% swelling). Finite element simulation

SUBMITTER: Lee G 

PROVIDER: S-EPMC12810619 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature