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Träfflista för sökning "WFRF:(Xu Wenjing) srt2:(2017)"

Sökning: WFRF:(Xu Wenjing) > (2017)

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1.
  • Meng, Yuanjing, et al. (författare)
  • Low-temperature fuel cells using a composite of redox-stable perovskite oxide La0.7Sr0.3Cr0.5Fe0.5O3-delta and ionic conductor
  • 2017
  • Ingår i: Journal of Power Sources. - : Elsevier. - 0378-7753 .- 1873-2755. ; 366, s. 259-264
  • Tidskriftsartikel (refereegranskat)abstract
    • A novel solid oxide fuel cell (SOFC) incorporating the semiconductor with the ionic conductor to replace the traditional electrolyte layer with improved performance has been recently reported. In the present work, we found that the redox stable electrode material La0.7Sr0.3Cr0.5Fe0.5O3-delta(LSCrF) can be considered as a good candidate for such configuration, electrolyte layer-free fuel cells (EFFCs), due to its high ionic and electronic conductivities, excellent catalytic activity and good chemical stability. EFFCs based on the composite of perovskite oxide LSCrF and ionic conductor Ce0.8Sm0.2O2-delta (SDC) offered promising performances, i.e., 1059 mW cm(-2) at 550 degrees C without any electronic short circuiting problem. It even exhibited a highly promising result of 553 mW cm(-2) at 470 degrees C in further low-temperature operation. These high performances can be attributed to the improved conductivity, more triple-phase boundaries (TPB) and accelerated oxygen reduction reaction (ORR) of LSCrF-SDC composite. The influence of the weight ratio between LSCrF and SDC on the EFFC electrochemical performance was investigated. This new discovery indicates a great potential for exploring multifunctional perovskites for the new SOFC technologies.
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2.
  • Wang, Xunying, et al. (författare)
  • La0.1SrxCa0.9-xMnO3-δ -Sm0.2Ce0.8O1.9 composite material for novel low temperature solid oxide fuel cells
  • 2017
  • Ingår i: International journal of hydrogen energy. - : Elsevier. - 0360-3199 .- 1879-3487. ; 42:27, s. 17552-17558
  • Tidskriftsartikel (refereegranskat)abstract
    • Lowering the operating temperature of the solid oxide fuel cells (SOFCs) is one of the world R&D tendencies. Exploring novel electrolytes possessing high ionic conductivity at low temperature becomes extremely important with the increasing demands of the energy conversion technologies. In this work, perovskite La0.1SrxCa0.9-xMnO3-δ (LSCM) materials were synthesized and composited with the ionic conductor Sm0.2Ce0.8O1.9 (SDC). The LSCM-SDC composite was sandwiched between two nickel foams coated with semiconductorNi0.8Co0.15Al0.05LiO2- δ (NCAL) to form the fuel cell device. The strontium content in theLSCM and the ratios of LSCM to SDC in the LSCM-SDC composite have significant effects on the electrical properties and fuel cell performances. The best performance has been achieved from LSCM-SDC composite with a weight ratio of 2:3. The fuel cells showed OCV over 1.0 V and excellent maximum output power density of 800 mW/cm2 at 550 ºC. Device processes and ionic transport processes were also discussed.
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  • Resultat 1-2 av 2
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Zhu, Bin (2)
Dong, Wenjing (2)
Mi, Youquan (2)
Wang, Xunying (2)
Afzal, Muhammad (1)
Xia, Chen (1)
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Wang, Baoyuan (1)
Zhang, Wei (1)
Wu, Yan (1)
Wang, Zhaoqing (1)
Deng, Hui (1)
Feng, Chu (1)
Meng, Yuanjing (1)
Ji, Yuan (1)
Xu, Fuzhan (1)
Xu, Zhaoyun (1)
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