Solar energy storage using a Cu2O-TiO photocathode in a lithium battery

Ciria-Ramos, Isabel (Universidad de Zaragoza) ; Juarez-Perez, Emilio J. ; Haro, Marta (Universidad de Zaragoza)

Resumen: A Cu2O-TiO2 photoelectrode is pr+oposed for simultaneous solar light energy harvesting and storing of electrochemical energy in an adapted lithium coin cell. The p-type Cu2O semiconductor layer is the light harvester component of the photoelectrode and the TiO2 film performs as the capacitive layer. The rationale of the energy scheme shows that the photocharges generated in the Cu2O semiconductor induce lithiation/delithiation processes in the TiO2 film as a function of the applied bias voltage and light power. A photorechargeable lithium button cell drilled on one side recharges with visible white light in ≈9 h in open circuit. It provides an energy density of ≈150 mAh g−1 at 0.1 C discharge current in dark, and the overall efficiency is 0.29%. This work draws a new approach for the photoelectrode role to advance in monolithic rechargeable batteries.

Idioma: Inglés

DOI: 10.1002/smll.202301244

Año: 2023

Publicado en: Small 19, 28 (2023), 2301244 [7 pp.]
ISSN: 1613-6810

Factor impacto JCR: 13.0 (2023)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 19 / 178 = 0.107 (2023) - Q1 - T1
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 35 / 438 = 0.08 (2023) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 16 / 140 = 0.114 (2023) - Q1 - T1
Categ. JCR: PHYSICS, CONDENSED MATTER rank: 7 / 79 = 0.089 (2023) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 23 / 230 = 0.1 (2023) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 13 / 179 = 0.073 (2023) - Q1 - T1

Factor impacto SCIMAGO: 3.348 - Biomaterials (Q1) - Biotechnology (Q1) - Chemistry (miscellaneous) (Q1) - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1) - Medicine (miscellaneous) (Q1) - Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/LMP71-21
Financiación: info:eu-repo/grantAgreement/ES/UZ-DGA/T57-20R
Financiación: info:eu-repo/grantAgreement/ES/MCIU/RYC-2018-025222-I
Financiación: info:eu-repo/grantAgreement/ES/MICINN AEI/EIN2020-112315
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-107893RB-I00/AEI-10.13039-501100011033

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Química Física (Dpto. Química Física)