An in-situ polymerization strategy for gel polymer electrolyte Si||Ni-rich lithium-ion batteries.

ABSTRACT: Coupling the Si-based anodes with nickel-rich LiNi_xMn_yCo_1-x-yO₂ cathodes (x ≥ 0.8) in the energy-dense cell prototype suffers from the mechanical instability of the Li-Si alloys, cathode collapse upon the high-voltage cycling, as well as the severe leakage current at elevated temperatures. More seriously, the cathode-to-anode cross-talk effect of transitional metal aggravates the depletion of the active Li reservoir. To reconcile the cation utilization degree, stress dissipation, and extreme temperature tolerance of the Si-based anode||NMC prototype, we propose a gel polymer electrolyte to reinforce the mechanical integrity of Si anode and chelate with the transitional cations towards the stabilized interfacial property. As coupling the conformal

SUBMITTER: Bai M 

PROVIDER: S-EPMC11199651 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature