scholarly journals Physical and chemical properties of LSCF-CuO as potential cathode for intermediate temperature solid oxide fuel cell (IT-SOFC)

2018 ◽  
Vol 14 (3) ◽  
pp. 391-396 ◽  
Author(s):  
Ahmad Fuzamy Mohd Abd Fatah ◽  
Noorashrina A. Hamid
Keyword(s):  
Large Scale ◽  
Sol Gel ◽  
Chemical Properties ◽  
Electrical Energy ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
High Catalytic Activity ◽  
Oxide Fuel ◽  
Sem Images

Solid oxide fuel cells (SOFCs) are efficient yet environmentally benign devices that can convert chemical energy into electrical energy and heat for large scale of applications. However, higher operating temperature of this device limits the selection of proper materials to be used as electrode and electrolyte as well as sacrifices the durability. Thus, it is desirable to develop materials with superior electrochemical performance at intermediate temperature (600-900 oC) for SOFC. LaSrCoFeO3 (LSCF) doped with CuO is an attracting yet promising cathode material for IT-SOFC owing to the distinguish properties including high electrical conductivity and high catalytic activity for the oxygen reduction reaction. This work investigates the influence of the synthesis route which are sloid state route and sol-gel route towards chemical and physical properties of composite LSCF-CuO. The samples were synthesized at different temperature ranging from 600 oC to 900 oC for each route respectively. XRD results showed high purity of as-synthesized samples while in the meantime increased in crystallinity has been observed as increased in calcining temperature indicating bigger crystal size after calcined at 900 oC. SEM images showed LSCF-CuO particles tends to expand as the calcining temperature increased. Meanwhile, from TGA results it is clear to conclude that LSCF-CuO loss its weight significantly after calcined at designed temperature. 

Sintering Effects on LSCF Cathodes for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs)

2010 ◽  
Vol 139-141 ◽  
pp. 141-144 ◽  
Author(s):  
Andanastuti Muchtar ◽  
Noorashina A. Hamid ◽  
Norhamidi Muhamad ◽  
Wan Ramli Wan Daud
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Sol Gel ◽  
Electrical Power ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Perovskite Oxide ◽  
Oxide Fuel ◽  
Research Attention

Solid oxide fuel cells (SOFCs) have been the centre of much research attention as these shows much potential in the generation of electrical power especially in terms of the high conversion efficiency of chemical energy to electric power. Recent research has been focused on a new material which is an electro catalyst for the oxygen reduction reaction in the intermediate temperature range (600-800oC). In this work, perovskite oxide which is a mixed ionic conducting material, La1-xSrxCo0.2Fe0.8O3-δ (LSCF) with x = 0.3-0.5 has been developed using the sol-gel method. The obtained powders were pelletized and sintered at different temperatures from 800 to1300oC. The sintered properties of the LSCF pellets such as density, porosity, grain size and shrinkage were investigated. A sintering temperature of 900oC was found to be the optimum temperature for the preparation of the LSCF cathodes in this study.

scholarly journals Yb-Doped BaCeO3 and Its Composite Electrolyte for Intermediate-Temperature Solid Oxide Fuel Cells

Materials ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 739
Author(s):  
Xueyue Jiang ◽  
Fufang Wu ◽  
Hongtao Wang
Keyword(s):  
Solid Oxide Fuel Cells ◽  
Raw Materials ◽  
Sol Gel ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Barium Acetate ◽  
Sem Images ◽  
Composite Electrolyte ◽  
Fuel Cell Performance ◽  
Structure Morphology

BaCe0.9Yb0.1O3−α was prepared via the sol-gel method using zirconium nitrate, ytterbium trioxide, cerium nitrate and barium acetate as raw materials. Subsequently, it reacted with the binary NaCl~KCl salt to obtain BaCe0.9Yb0.1O3−α-NaCl~KCl composite electrolyte. The structure, morphology, conductivity and fuel cell performance of the obtained samples were investigated. Scanning electron microscope (SEM) images showed that BaCe0.9Yb0.1O3−α and NaCl~KCl combined with each other to form a homogeneous 3-D reticulated structure. The highest power density and conductivity of BaCe0.9Yb0.1O3−α-NaCl~KCl was 393 mW·cm−2 and 3.0 × 10−1 S·cm−1 at 700 °C, respectively.

Ceria-based electrolyte reinforced by sol–gel technique for intermediate-temperature solid oxide fuel cells

2013 ◽  
Vol 38 (23) ◽  
pp. 9867-9872 ◽  
Author(s):  
Yun-Gyeom Choi ◽  
Jun-Young Park ◽  
Ji-Won Son ◽  
Jong-Ho Lee ◽  
Hae-June Je ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Sol Gel ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
Gel Technique

Synthesize and Evaluation of Electrospun Perovskite (Ba0.5Sr0.5Co0.2Fe0.8O3- δ) Nanofibers for Intermediate Temperature Solid- Oxide Fuel Cell

2011 ◽  
Vol 52-54 ◽  
pp. 1544-1550 ◽  
Author(s):  
Samaneh Shahgaldi ◽  
Zahira Yaakob ◽  
Dariush Jafar Khadem ◽  
Wan Ramli Wan Daud
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Sol Gel ◽  
Solid Oxide ◽  
Intermediate Temperature ◽  
Oxide Fuel ◽  
X Ray Diffraction ◽  
One Dimensional ◽  
Air Atmosphere ◽  
Perovskite Type

In recent years, one dimensional nanostructure, nanofibers with unique properties have been subjected of intense research due to potential properties in many applications. This study presents synthesize of Perovskite-type Ba0.5Sr0.5Co0.2Fe0.8O3−δ (BSCF) nanofibers using sol-gel via electrospinning as a cathode for intermediate temperature solid oxide fuel cell. BSCF nanofibers are prepared by treating electrospun polyvinyl Pyrrolidon/ Ba0.5Sr0.5Co0.8Fe0.2O3−δ composite fibers at high temperature in an air atmosphere. BSCF nanofibers were characterized by x-ray diffraction (XRD) to observe desired structure, scanning electron microscopy (SEM) to investigated the morphology of fibers, and Brunauer, Emmett and Teller (BET) for measuring the surface area. To the best of our knowledge, investigation on Ba0.5Sr0.5 Co0.2 Fe 0.8O3−δ nanofibers has not been reported up to now.

Sign in / Sign up

Export Citation Format

Share Document