Issue

Vol. 12 (2020)

Superionic Conductivity in Ceria-Based Heterostructure Composites for Low-Temperature Solid Oxide Fuel Cells

https://doi.org/10.1007/s40820-020-00518-x
Yifei Zhang
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China
Jingjing Liu
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China
Manish Singh
Department of Chemistry, Division for Pure and Applied Biochemistry, Lund University, Naturvetarvägen 14, 22362 Lund, Sweden
Enyi Hu
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China
Zheng Jiang
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China
Rizwan Raza
Clean Energy Research Lab (CERL), Department of Physics, COMSATS University Islamabad, Lahore, Lahore 54000, Pakistan
Faze Wang
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China
Jun Wang
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China
Fan Yang
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China
Bin Zhu
Jiangsu Provincial Key Laboratory of Solar Energy Science and Technology/Energy Storage Research Center, School of Energy and Environment, Southeast University, Nanjing 210096, People’s Republic of China

Corresponding Author: Bin Zhu

zhu‑bin@seu.edu.cn

Nano-Micro Letters, Vol. 12 (2020), Article Number: 178

Abstract

Ceria-based heterostructure composite (CHC) has become a new stream to develop advanced low-temperature (300–600 °C) solid oxide fuel cells (LTSOFCs) with excellent power outputs at 1000 mW cm−2 level. The state-of-the-art ceria–carbonate or ceria–semiconductor heterostructure composites have made the CHC systems significantly contribute to both fundamental and applied science researches of LTSOFCs; however, a deep scientific understanding to achieve excellent fuel cell performance and high superionic conduction is still missing, which may hinder its wide application and commercialization. This review aims to establish a new fundamental strategy for superionic conduction of the CHC materials and relevant LTSOFCs. This involves energy band and built-in-field assisting superionic conduction, highlighting coupling effect among the ionic transfer, band structure and alignment impact. Furthermore, theories of ceria–carbonate, e.g., space charge and multi-ion conduction, as well as new scientific understanding are discussed and presented for functional CHC materials.


HIGHLIGHTS
• Ceria-based heterostructure composite for novel semiconductor-ionic fuel cells.
• Superionic conduction at interfaces is associated with the crossover of band structure.
• Band alignment/bending resultant built-in field plays a significant role in superionic conduction.


 

Keywords

Ceria-based heterostructure composite Ceria–semiconductor Energy band Built-in field Solid oxide fuel cell
Zhang, Yifei, Jingjing Liu, Manish Singh, Enyi Hu, Zheng Jiang, Rizwan Raza, Faze Wang, Jun Wang, Fan Yang, and Bin Zhu. 2020. “Superionic Conductivity in Ceria-Based Heterostructure Composites for Low-Temperature Solid Oxide Fuel Cells”. Nano-Micro Letters 12 (August):178. https://doi.org/10.1007/s40820-020-00518-x.
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