Performance optimization of Ca and Y co-doped CeO2-based electrolyte for intermediate-temperature solid oxide fuel cells

Kang, Jie; Feng, Wenqiang; Guo, Dong; Chen, Kai; Gao, Shoushan; Jiang, Junru; Lu, Chunling; Niu, Bingbing; Wang, Biao

doi:10.1016/j.jallcom.2022.165317

Cited by 26 publications

(1 citation statement)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Cerium dioxide (or ceria) has a cubic (fluorite-type) crystal structure and exhibits a unique combination of ionic (oxide and proton), − and electrical (n- and p-type) ,− conductivities. This complex conductivity makes CeO 2 an attractive candidate material for an electrolyte in solid oxide fuel cells (SOFCs), electrocatalysts for rechargeable metalair batteries, and for memristor system technologies, including resistive random-access memory (RRAM). Ionic conductivity is due to oxygen vacancies, which are created either by substitutional doping of CeO 2 with trivalent lanthanide cations (e.g., Gd 3+ , Sm 3+ , or Pr 3+ ) or the presence of Ce 3+ (self-doping by reduction of Ce 4+ ): 2 Ce 4 + + O 2 − → 2 Ce 3 + + V O · · + 1 2 O 2 …”

Section: Introductionmentioning

confidence: 99%

Dual Exciton Polarization in Bipolar CeO_2–x Nanocrystals Controlled by Defect-Based Redox Processes

Kenny-Wilby,

Wedde,

Zorn

et al. 2024

J. Am. Chem. Soc.

View full text Add to dashboard Cite

Discovering alternative means to control electronic states in semiconductor nanostructures is the key to the development of new quantum technologies. Controlling the cyclotron motion of free charge carriers in semiconductor nanocrystals using an external magnetic field generates a tunable angular momentum, as a collective electronic degree of freedom, which can be imparted to the electronic band states to achieve complete exciton polarization. The sign of this polarization is determined by the type of majority charge carriers in a given lattice. Using magnetic circular dichroism spectroscopy, we demonstrate a simultaneous polarization of excitonic states in substoichiometric oxygen-deficient CeO 2−x nanocrystals associated with electrons and holes, which can be controlled by the thermal treatment of colloidal nanocrystals in oxidizing or reducing conditions. The presence of both occupied and unoccupied midgap states, due to Ce 3+ 4f and Ce 4+ 4f orbitals, respectively, allows for selective probing of the effect of holes in the valence band (VB → Ce 4+ 4f) and electrons in the conduction band (Ce 3+ 4f → CB). The two transitions show the opposite sign at 300 K due to the opposite angular momenta associated with cyclotron electrons and holes. The ability to manipulate Ce 4f-derived midgap states by defect formation during the synthesis or postsynthesis treatment allows for a range of new technological applications of CeO 2−x nanocrystals in optoelectronics.

show abstract

Section: Introductionmentioning

confidence: 99%

Dual Exciton Polarization in Bipolar CeO_2–x Nanocrystals Controlled by Defect-Based Redox Processes

Kenny-Wilby,

Wedde,

Zorn

et al. 2024

J. Am. Chem. Soc.

View full text Add to dashboard Cite

show abstract

M0.9Y0.1O2–δ–BiScO3 (M = Zr, Ce) — Preparation, Structure, and Ionic Conductivity

Sudzhanskaya,

Sotnikova

2023

Glass Ceram

View full text Add to dashboard Cite

A Low-nanosized Broad Spectrum Photocatalyst for Treatment of Pharmaceutical and Industrial Pollutants: New Ce0.97Fe0.03Zn0.04O2 Composition

Al-Zaqri

2024

Water Air Soil Pollut

View full text Add to dashboard Cite

Performance optimization of Ca and Y co-doped CeO2-based electrolyte for intermediate-temperature solid oxide fuel cells

Cited by 26 publications

References 66 publications

Dual Exciton Polarization in Bipolar CeO_2–x Nanocrystals Controlled by Defect-Based Redox Processes

Dual Exciton Polarization in Bipolar CeO_2–x Nanocrystals Controlled by Defect-Based Redox Processes

M0.9Y0.1O2–δ–BiScO3 (M = Zr, Ce) — Preparation, Structure, and Ionic Conductivity

A Low-nanosized Broad Spectrum Photocatalyst for Treatment of Pharmaceutical and Industrial Pollutants: New Ce0.97Fe0.03Zn0.04O2 Composition

Contact Info

Product

Resources

About

Performance optimization of Ca and Y co-doped CeO2-based electrolyte for intermediate-temperature solid oxide fuel cells

Cited by 26 publications

References 66 publications

Dual Exciton Polarization in Bipolar CeO2–x Nanocrystals Controlled by Defect-Based Redox Processes

Dual Exciton Polarization in Bipolar CeO2–x Nanocrystals Controlled by Defect-Based Redox Processes

M0.9Y0.1O2–δ–BiScO3 (M = Zr, Ce) — Preparation, Structure, and Ionic Conductivity

A Low-nanosized Broad Spectrum Photocatalyst for Treatment of Pharmaceutical and Industrial Pollutants: New Ce0.97Fe0.03Zn0.04O2 Composition

Contact Info

Product

Resources

About

Dual Exciton Polarization in Bipolar CeO_2–x Nanocrystals Controlled by Defect-Based Redox Processes

Dual Exciton Polarization in Bipolar CeO_2–x Nanocrystals Controlled by Defect-Based Redox Processes