Comparing the Expected Stack Cost of Next Generation Intermediate Temperature Protonic Ceramic Fuel Cells with Solid Oxide Fuel Cell Technology

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2004
Author(s):  
Junjiao Li ◽  
Jun Xie ◽  
Dongchen Li ◽  
Lei Yu ◽  
Chaowei Xu ◽  
...  

Interface engineering can be used to tune the properties of heterostructure materials at an atomic level, yielding exceptional final physical properties. In this work, we synthesized a heterostructure of a p-type semiconductor (NiO) and an n-type semiconductor (CeO2) for solid oxide fuel cell electrolytes. The CeO2-NiO heterostructure exhibited high ionic conductivity of 0.2 S cm−1 at 530 °C, which was further improved to 0.29 S cm−1 by the introduction of Na+ ions. When it was applied in the fuel cell, an excellent power density of 571 mW cm−1 was obtained, indicating that the CeO2-NiO heterostructure can provide favorable electrolyte functionality. The prepared CeO2-NiO heterostructures possessed both proton and oxygen ionic conductivities, with oxygen ionic conductivity dominating the fuel cell reaction. Further investigations in terms of electrical conductivity and electrode polarization, a proton and oxygen ionic co-conducting mechanism, and a mechanism for blocking electron transport showed that the reconstruction of the energy band at the interfaces was responsible for the enhanced ionic conductivity and cell power output. This work presents a new methodology and scientific understanding of semiconductor-based heterostructures for advanced ceramic fuel cells.


2019 ◽  
Vol 7 (34) ◽  
pp. 19696-19703 ◽  
Author(s):  
Imdadullah Thaheem ◽  
Kyeong Joon Kim ◽  
Jong Jun Lee ◽  
Dong Woo Joh ◽  
Incheol Jeong ◽  
...  

Herein, we developed a Mn1.3Co1.3Cu0.4O4 (MCCO) spinel for use as a new ORR catalyst for intermediate temperature solid oxide fuel cell (SOFC) applications.


2019 ◽  
Vol 21 (18) ◽  
pp. 9407-9418 ◽  
Author(s):  
Emilia Olsson ◽  
Jonathon Cottom ◽  
Xavier Aparicio-Anglès ◽  
Nora H. de Leeuw

The effect of Co-site doping on the electronic, magnetic, and physical properties of next-generation SOFC cathode SmCoO3.


RSC Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 7-14
Author(s):  
Cheng Cheng Wang ◽  
Mortaza Gholizadeh ◽  
Bingxue Hou ◽  
Xincan Fan

Strontium segregation in a La0.6Sr0.4Co0.2Fe0.8O3−δ (LSCF) electrode reacts with Cr and S in a solid oxide fuel cell (SOFC), which can cause cell performance deterioration.


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