Design considerations and cycling guidance for aluminum foil anodes in lithium-ion rechargeable cells

• DOI: 10.1016/j.electacta.2023.142437
• Publication Date: 2023-04-18T05:28:11Z
• Authors: Jia Zhang; Tianye Zheng; Kwok-ho Lam; Steven T. Boles

Al foil is an attractive anode candidate for Li-ion rechargeable batteries, but the systemic problem of fast capacity degradation limits its re-introduction in practical applications. Partial lithiation-delithiation does mitigate issue to a certain degree, cycle life still tied problems associated with phase transformation between β-LiAl and α-Al. Utilizing solubility range has been proven be feasible approach stabilize grown on foil, i.e., β-LiAl(Al) anode, electrochemically driven ion transport limitations this electrode remain largely unclear. Herein, we present comprehensive electrochemical analyses shed light kinetic which have intrinsic links thickness total cell capacity. Results show that can charged at C-rate as high 2.9 C when proper prelithiation done foil. The superior rate capability suggested partly originate from lithium diffusion β-LiAl: -10−7 cm2·s−1 room temperature. Furthermore, cells consisting vs. commercial Li4Ti5O12 exhibit promising cycling performances, even 10 mA·cm−2, giving 300 cycles retention ∼80%. With systematic investigation limiting mechanisms focusing correlating depth life, cyclability different current densities (0.5–10 mA·cm−2) mapped out, providing guidance utilization types, all-solid-state batteries hybrid capacitors.