Two-Dimensional Bi2O2CO3 Nanosheets as a Li-Ion Battery Anode with Kinetic and Theoretical Studies
Por:
Rodriguez J.R., Flores-Castañeda M., Ponce-Pérez R., Guerrero-Sánchez J., Moreno-Armenta M.G., Trujillo-Navarrete B., Paraguay-Delgado F., Camacho-López M.A., Devia-Cruz L.F., Camacho-López S.
Publicada:
1 ene 2025
Ahead of Print:
1 abr 2025
Resumen:
A two-dimensional (2D) anode material, Bi2O2CO3 nanosheets with a sandwich-like structure, was successfully prepared by using a facile two-step method: (i) an initial femtosecond laser ablation of a Bi target in water; and (ii) an aging treatment at room temperature. The Bi2O2CO3-based anode delivers a discharge capacity of 494.5 mAh g-1 at 160 mA g-1 with an efficiency >99.4% after 200 cycles, storing around 9.4 Li-ions per mol of Bi2O2CO3. The ex-situ analyses demonstrate that the lithiation of Bi2O2CO3 nanosheets leads to its structural transformation, forming Li2CO3, LiBi, and Li3Bi. Also, this exhibits a dual Li-ion storage mechanism with intercalation and capacitance contributions, which could significantly boost the capacity retention and rate capability. Moreover, density functional theory (DFT) calculations suggest that the Bi2O2CO3 nanosheets give a theoretical gravimetric capacity of 630.5 mAh g-1, accompanied by a volumetric expansion of ~140% upon lithiation. The analysis of the radial distribution function corroborates the structural changes of Bi2O2CO3 nanosheets upon lithiation. Additionally, it was found that Li diffuses preferably along the [010] direction and between adjacent Bi2O2 layers in an out-of-plane displacement. © 2025 American Chemical Society.
Filiaciones:
Rodriguez J.R.:
Departamento de Electrónica y Telecomunicaciones, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, BC 22860, Mexico
Flores-Castañeda M.:
Departamento de Óptica, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, BC 22860, Mexico
Ponce-Pérez R.:
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, BC 22860, Mexico
Guerrero-Sánchez J.:
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, BC 22860, Mexico
Moreno-Armenta M.G.:
Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, BC 22860, Mexico
Trujillo-Navarrete B.:
Centro de Graduados e Investigación en Química, Instituto Tecnológico de Tijuana, Tijuana, BC 22000, Mexico
Paraguay-Delgado F.:
Centro de Investigación en Materiales Avanzados, Chih, Chihuahua, 31136, Mexico
Camacho-López M.A.:
Laboratorio de Investigación y Desarrollo de Materiales Avanzados, Facultad de Química, Universidad Autónoma del Estado de México, Campus Rosedal, Toluca, 50295, Mexico
Devia-Cruz L.F.:
Departamento de Óptica, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, BC 22860, Mexico
Camacho-López S.:
Departamento de Óptica, Centro de Investigación Científica y de Educación Superior de Ensenada, Ensenada, BC 22860, Mexico
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