A Key for Achieving Higher Open-Circuit Voltage in Protonic Ceramic Fuel Cells: Lowering Interfacial Electrode Polarization

2018 ◽  
Vol 2 (1) ◽  
pp. 587-597 ◽  
Author(s):  
Hiroyuki Shimada ◽  
Toshiaki Yamaguchi ◽  
Hirofumi Sumi ◽  
Yuki Yamaguchi ◽  
Katsuhiro Nomura ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Electrode Polarization ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

Fabrication of protonic ceramic fuel cells via infiltration with Ni nanoparticles: A new strategy to suppress NiO diffusion & increase open circuit voltage

2020 ◽  
Vol 345 ◽  
pp. 115189 ◽  
Author(s):  
Donglin Han ◽  
Akiko Kuramitsu ◽  
Takayuki Onishi ◽  
Yohei Noda ◽  
Masatoshi Majima ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Ni Nanoparticles ◽  
New Strategy ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

scholarly journals An Interface Heterostructure of NiO and CeO2 for Using Electrolytes of Low-Temperature Solid Oxide Fuel Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2004
Author(s):  
Junjiao Li ◽  
Jun Xie ◽  
Dongchen Li ◽  
Lei Yu ◽  
Chaowei Xu ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Ionic Conductivity ◽  
Ionic Conductivities ◽  
Solid Oxide ◽  
Electrode Polarization ◽  
Oxide Fuel ◽  
Type Semiconductor ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

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.

Open-cell voltage and electrical conductivity of a protonic ceramic electrolyte under two chemical potential gradients

2018 ◽  
Vol 20 (22) ◽  
pp. 14997-15001 ◽  
Author(s):  
Ho-Il Ji ◽  
Hyoungchul Kim ◽  
Hae-Weon Lee ◽  
Byung-Kook Kim ◽  
Ji-Won Son ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Open Circuit Voltage ◽  
Chemical Potential ◽  
Cell Voltage ◽  
Open Circuit ◽  
Ceramic Electrolyte ◽  
Ceramic Fuel ◽  
Potential Gradients ◽  
Ceramic Fuel Cells ◽  
Chemical Potential Gradients

Theoretical open-circuit voltage and electrical conductivity of BZY20 at 500 °C under O2 and H2O chemical potential gradients in a range of interest for protonic ceramic fuel cells are investigated.

Optimum dopant of barium zirconate electrolyte for manufacturing of protonic ceramic fuel cells

2021 ◽  
Vol 506 ◽  
pp. 230134
Author(s):  
Tomohiro Kuroha ◽  
Yoshiki Niina ◽  
Mizuki Shudo ◽  
Go Sakai ◽  
Naoki Matsunaga ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Barium Zirconate ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

A Sr and Ni doped Ruddlesden−Popper perovskite oxide La1.6Sr0.4Cu0.6Ni0.4O4+δ as a promising cathode for protonic ceramic fuel cells

2021 ◽  
Vol 509 ◽  
pp. 230369
Author(s):  
Jiyang Ma ◽  
Yuxin Pan ◽  
Yakun Wang ◽  
Yu Chen
Keyword(s):  
Fuel Cells ◽  
Perovskite Oxide ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells

Stable perovskite-fluorite dual-phase composites synthesized by one-pot solid-state reactive sintering for protonic ceramic fuel cells

2021 ◽  
Author(s):  
Zeyu Zhao ◽  
Minda Zou ◽  
Hua Huang ◽  
Harrison Wofford ◽  
Jianhua Tong
Keyword(s):  
Fuel Cells ◽  
Solid State ◽  
Dual Phase ◽  
Reactive Sintering ◽  
One Pot ◽  
Ceramic Fuel ◽  
Ceramic Fuel Cells
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