scholarly journals Improved mechanical strength, proton conductivity and power density in an ‘all-protonic’ ceramic fuel cell at intermediate temperature

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abul K. Azad ◽  
Abdalla M. Abdalla ◽  
Ahmed Afif ◽  
Atia Azad ◽  
Shammya Afroze ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Mechanical Strength ◽  
Power Density ◽  
Proton Conductivity ◽  
Cost Effective ◽  
Rietveld Analysis ◽  
Intermediate Temperature ◽  
Barium Cerate ◽  
Proton Conducting ◽  
Ceramic Fuel

AbstractProtonic ceramic fuel cells (PCFCs) have become the most efficient, clean and cost-effective electrochemical energy conversion devices in recent years. While significant progress has been made in developing proton conducting electrolyte materials, mechanical strength and durability still need to be improved for efficient applications. We report that adding 5 mol% Zn to the Y-doped barium cerate-zirconate perovskite electrolyte material can significantly improve the sintering properties, mechanical strength, durability and performance. Using same proton conducting material in anodes, electrolytes and cathodes to make a strong structural backbone shows clear advantages in mechanical strength over other arrangements with different materials. Rietveld analysis of the X-ray and neutron diffraction data of BaCe0.7Zr0.1Y0.15Zn0.05O3−δ (BCZYZn05) revealed a pure orthorhombic structure belonging to the Pbnm space group. Structural and electrochemical analyses indicate highly dense and high proton conductivity at intermediate temperature (400–700 °C). The anode-supported single cell, NiO-BCZYZn05|BCZYZn05|BSCF-BCZYZn05, demonstrates a peak power density of 872 mW cm−2 at 700 °C which is one of the highest power density in an all-protonic solid oxide fuel cell. This observation represents an important step towards commercially viable SOFC technology.

scholarly journals Improved Mechanical Strength, Proton Conductivity and Power Density in an ‘All-protonic’ Ceramic Fuel Cell at Intermediate Temperature

2021 ◽  
Author(s):  
Abul K. Azad ◽  
Abdalla M. Abdalla ◽  
Ahmed Afif ◽  
Atia Azad ◽  
Shammya Afroze ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Mechanical Strength ◽  
Power Density ◽  
Proton Conductivity ◽  
Cost Effective ◽  
Rietveld Analysis ◽  
Intermediate Temperature ◽  
Barium Cerate ◽  
Proton Conducting ◽  
Ceramic Fuel

Abstract Protonic ceramic fuel cells (PCFCs) have become the most efficient, clean and cost-effective electrochemical energy conversion devices in recent years. While significant progress has been made in developing proton conducting electrolyte materials, mechanical strength and durability still need to be improved for efficient applications. We report that adding 5 mol% Zn to the Y-doped barium cerate-zirconate perovskite electrolyte material can significantly improve the sintering properties, mechanical strength, durability and performance. Using same proton conducting material in anodes, electrolytes and cathodes to make a strong structural backbone shows clear advantages in mechanical strength over other arrangements with different materials. Rietveld analysis of the X-ray and neutron diffraction data of BaCe0.7Zr0.1Y0.15Zn0.05O3-δ (BCZYZn05) revealed a pure orthorhombic structure belonging to the Pbnm space group. Structural and electrochemical analyses indicate highly dense and high proton conductivity at intermediate temperature (400-700 °C). The anode-supported single cell, NiO-BCZYZn05 | BCZYZn05 | BSCF-BCZYZn05, demonstrates a peak power density of 872 mW cm-2 at 700 °C which is one of the highest power density in an all-protonic solid oxide fuel cell. This observation represents an important step towards commercially viable SOFC technology.

Modeling and Analysis of a Bio-Fuelled Ceramic Fuel Cell Stack

2004 ◽  
Author(s):  
Jinliang Yuan ◽  
Bin Zhu ◽  
Ramesh K. Shah ◽  
Bengt Sunde´n
Keyword(s):  
Fuel Cell ◽  
Gas Flow ◽  
System Modeling ◽  
Operating Conditions ◽  
Intermediate Temperature ◽  
Innovative Technology ◽  
Direct Oxidation ◽  
Modeling And Analysis ◽  
Ceramic Fuel Cell ◽  
Ceramic Fuel

Recent development in the advanced ceramic fuel cell (CFC), working at intermediate temperature 600–700°C, brings up feasibility and new opportunity to employ renewable fuels with this innovative technology. It may offer a better solution concerning environment, natural resources and development of our civil society. Moreover, direct oxidation of hydrocarbon fuels at intermediate temperature possesses great advantage in avoiding complex and expensive external reforming process. This paper presents modeling and analysis of an intermediate temperature CFC stack. The model is a general one to evaluate the stack performance for the purpose of optimal design and/or configuration based on the specified electrical power or fuel supply rate, except that the Tafel coefficients are adjusted and/or obtained to match experimental data. The energy and gas flow data obtained from the investigation can be further used to identify the heat exchanger network configurations and optimal operating conditions using process integration techniques. The model can be applied as a stand alone one, or implemented into an overall energy system modeling for the purpose of system study.

Supramolecular hydrogen-bonded organic networks through acid–base pairs as efficient proton-conducting electrolytes

CrystEngComm ◽  
2019 ◽  
Vol 21 (33) ◽  
pp. 4996-5001 ◽  
Author(s):  
Mei-Jie Wei ◽  
Ying Gao ◽  
Ke Li ◽  
Bo Li ◽  
Jia-Qi Fu ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Cost Effective ◽  
Acid Base ◽  
Base Pairs ◽  
Proton Conducting ◽  
Cell Technology ◽  
Fuel Cell Technology ◽  
Cost Effective Method ◽  
Conducting Materials ◽  
Organic Networks

The research of developing new proton-conducting materials via a simple and cost-effective method is vital in fuel cell technology.

scholarly journals Polyoxometalate–Polymer Hybrid Materials as Proton Exchange Membranes for Fuel Cell Applications

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3425 ◽  
Author(s):  
Zhai ◽  
Li
Keyword(s):  
Fuel Cell ◽  
Proton Conductivity ◽  
Hybrid Materials ◽  
Clean Energy ◽  
Proton Exchange Membranes ◽  
Proton Exchange ◽  
High Proton Conductivity ◽  
Proton Conducting ◽  
Polymer Hybrid ◽  
High Proton

As one of the most efficient pathways to provide clean energy, fuel cells have attracted great attention in both academic and industrial communities. Proton exchange membranes (PEMs) or proton-conducting electrolytes are the key components in fuel cell devices, which require the characteristics of high proton conductivity as well as high mechanical, chemical and thermal stabilities. Organic–inorganic hybrid PEMs can provide a fantastic platform to combine both advantages of two components to meet these demands. Due to their extremely high proton conductivity, good thermal stability and chemical adjustability, polyoxometalates (POMs) are regarded as promising building blocks for hybrid PEMs. In this review, we summarize a number of research works on the progress of POM–polymer hybrid materials and related applications in PEMs. Firstly, a brief background of POMs and their proton-conducting properties are introduced; then, the hybridization strategies of POMs with polymer moieties are discussed from the aspects of both noncovalent and covalent concepts; and finally, we focus on the performance of these hybrid materials in PEMs, especially the advances in the last five years. This review will provide a better understanding of the challenges and perspectives of POM–polymer hybrid PEMs for future fuel cell applications.

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