The influence of oxygen vacancy on the electronic and optical properties of ABO3−δ (A = La, Sr, B = Fe, Co) perovskites

2019 ◽  
Vol 21 (36) ◽  
pp. 20454-20462 ◽  
Author(s):  
Ting Jia ◽  
Zhi Zeng ◽  
Xiaoli Zhang ◽  
Paul Ohodnicki ◽  
Benjamin Chorpening ◽  
...  
Keyword(s):  
Optical Properties ◽  
Fuel Cells ◽  
High Temperature ◽  
Oxygen Vacancy ◽  
Solid Oxide Fuel Cells ◽  
Energy Conversion ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Wide Range ◽  
Energy Conversion Devices

ABO3−δ (A = La, Sr, B = Fe, Co) perovskites are useful in a wide range of applications, including their recent exploration for application in high-temperature optical oxygen sensing for energy conversion devices such as solid oxide fuel cells.

Gas Turbine Cycles With Solid Oxide Fuel Cells—Part II: A Detailed Study of a Gas Turbine Cycle With an Integrated Internal Reforming Solid Oxide Fuel Cell

1994 ◽  
Vol 116 (4) ◽  
pp. 312-318 ◽  
Author(s):  
S. P. Harvey ◽  
H. J. Richter
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
High Temperature ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide Fuel Cell ◽  
Energy Conversion ◽  
Gas Turbine ◽  
Solid Oxide ◽  
Oxide Fuel

In conventional energy conversion processes, the fuel combustion is usually highly irreversible, and is thus responsible for the low overall efficiency of the power generation process. The energy conversion efficiency can be improved if immediate contact of air and fuel is prevented. One means to prevent this immediate contact is the use of fuel cell technology. Significant research is currently being undertaken to develop fuel cells for large-scale power production. High-temperature solid oxide fuel cells (SOFC) have many features that make them attractive for utility and industrial applications. However, in view of their high operating temperatures and the incomplete nature of the fuel oxidation process, such fuel cells must be combined with conventional power generation technology to develop power plant configurations that are both functional and efficient. Most fuel cell cycles proposed in the literature use a high-temperature fuel cell running at ambient pressure and a steam bottoming cycle to recover the waste heat generated by the fuel cell. With such cycles, the inherent flexibility and shorter start-up time characteristics of the fuel cell are lost. In Part I of this paper (Harvey and Richter, 1994), a pressurized cycle using a solid oxide fuel cell and an integrated gas turbine bottoming cycle was presented. The cycle is simpler than most cycles with steam bottoming cycles and more suited to flexible power generation. In this paper, we will discuss this cycle in more detail, with an in-depth discussion of all cycle component characteristics and losses. In particular, we will make use of the fuel cell’s internal fuel reforming capability. The optimal cycle parameters were obtained based on calculations performed using Aspen Technology’s ASPEN PLUS process simulation software and a fuel cell simulator developed by Argonne National Laboratory (Ahmed et al., 1991). The efficiency of the proposed cycle is 68.1 percent. A preliminary economic assessment of the cycle shows that it should compare favorably with a state-of-the-art combined cycle plant on a cost per MWe basis.

A high performance cathode for proton conducting solid oxide fuel cells

2015 ◽  
Vol 3 (16) ◽  
pp. 8405-8412 ◽  
Author(s):  
Zhiquan Wang ◽  
Wenqiang Yang ◽  
Shahid P. Shafi ◽  
Lei Bi ◽  
Zhenbin Wang ◽  
...  
Keyword(s):  
Air Pollution ◽  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Energy Conversion ◽  
High Performance ◽  
Fuel Efficiency ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Energy Conversion Devices

Intermediate temperature solid-oxide fuel cells (IT-SOFCs) have become a need worldwide due to their greater fuel efficiency, lower air pollution, much reduced cost and excellent longtime stability in energy conversion devices.

Oxygen vacancy-engineered cobalt-free Ruddlesden-Popper cathode with excellent CO2 tolerance for solid oxide fuel cells

2021 ◽  
Vol 497 ◽  
pp. 229872
Author(s):  
Daoming Huan ◽  
Lu Zhang ◽  
Kang Zhu ◽  
Xinyu Li ◽  
Nai Shi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Oxygen Vacancy ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Co2 Tolerance

scholarly journals Trends in electrode development for next generation solid oxide fuel cells

2016 ◽  
Vol 4 (46) ◽  
pp. 17913-17932 ◽  
Author(s):  
Wang Hay Kan ◽  
Alfred Junio Samson ◽  
Venkataraman Thangadurai
Keyword(s):  
Fuel Cells ◽  
High Temperature ◽  
Solid Oxide Fuel Cells ◽  
Vital Role ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Electrolysis Cells ◽  
Electrochemical Devices ◽  
Solid Oxide Electrolysis Cells ◽  
By Products

High temperature electrochemical devices, such as solid oxide fuel cells (SOFCs), will play a vital role in the future green and sustainable energy industries due to direct utilization of carbon-based fuels and their ability to couple with renewable energies to convert by-products into valuable fuels using solid oxide electrolysis cells (SOECs).

Efficiency Evaluation of Solid-Oxide Fuel Cells in Combined Cycle Operations

2009 ◽  
Vol 6 (2) ◽  
Author(s):  
C. M. Colson ◽  
M. H. Nehrir ◽  
M. C. Deibert ◽  
M. R. Amin ◽  
C. Wang
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
High Efficiency ◽  
Combined Cycle ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Modeling Simulation ◽  
Semi Empirical ◽  
Energy Conversion Devices ◽  
Capacity Method

Solid oxide fuel cells (SOFCs) are high-temperature, high-efficiency, combustionless electrochemical energy conversion devices that have potential for combined cycle applications. This paper intends to clarify and expand the efficiency discussions related to SOFC when operating in combined cycle (CC) systems. A brief analysis of the first and second thermodynamic laws is conducted and, building upon a previously developed SOFC dynamic model, operating fuel heating values are determined by utilizing the semi-empirical gas phase heat capacity method. As a result, accurate SOFC stack operational simulations are conducted to calculate its efficiency based on actual thermodynamic parameters. Furthermore, an analysis is conducted of a combined SOFC-CC system using dynamic modeling. Simulation results are given, which are intended to aid researchers in evaluating hybrid SOFC-CC generation systems.

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