Stabilized Solid Electrolyte Interface Layer and Regulate the Li⁺ Flux for Dendrite‐Free Lithium Metal Batteries

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

Disordered porous polyolefin separators cannot control the formation of lithium dendrites, which will seriously affect practical application metal batteries. In this paper, polyethylene (PE) separator is modified with CaCO3 and cobalt phthalocyanine (CoPc). reacts by-products generated during cycling process, effectively inhibiting successive generation by-products, preventing solid electrolyte interface (SEI) from being constantly destroyed regenerated, maintaining stability SEI. Density functional theory (DFT) calculations show that CoPc can absorb Li+, reduce solvation degree promote rapid uniform deposition realize dendrite-free growth. The results Li|CaCO3@CoPc@PE|Li cell (1 mA cm-2 cycle for more than 1550 h) Li|CaCO3@CoPc@PE|Cu (0.25 500 cycles, Coulomb efficiency maintained 96.52%) have excellent stability. addition, LiFePO4|CaCO3@CoPc@PE|Li still achieve 300 cycles at 2C, discharge capacity 115.19 mAh g-1, retention rate as high 98.65%. CaCO3@CoPc@PE provides a new idea to inhibit dendrite

Language: Английский

Polyimides in next-generation energy devices: Applications in Li-ion batteries to solar cells

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 641, P. 236780 - 236780

Published: April 9, 2025

Language: Английский

Micro porous forming of polyimide composite membrane with temperature and humidity control and its application Evaluation in lithium-ion batteries

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 644, P. 237082 - 237082

Published: April 23, 2025

Language: Английский