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Mechanism of chromi...
Mechanism of chromium poisoning the conventional cathode material for solid oxide fuel cells
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- Zhang, Xiaoqiang (författare)
- Lund University,Lunds universitet,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH
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- Yu, Guangsen (författare)
- University of Electronic Science and Technology of China
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- Zeng, Shumao (författare)
- University of Electronic Science and Technology of China
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- Parbey, Joseph (författare)
- University of Electronic Science and Technology of China
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- Xiao, Shuhao (författare)
- University of Electronic Science and Technology of China
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- Li, Baihai (författare)
- University of Electronic Science and Technology of China
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- Li, Tingshuai (författare)
- University of Electronic Science and Technology of China
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- Andersson, Martin (författare)
- Lund University,Lunds universitet,Värmeöverföring,Institutionen för energivetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Heat Transfer,Department of Energy Sciences,Departments at LTH,Faculty of Engineering, LTH,University of Electronic Science and Technology of China
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- Engelska 4 s.
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Ingår i: Journal of Power Sources. - : Elsevier BV. - 0378-7753. ; 381, s. 26-29
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Chromium poisoning the La0.875Sr0.125MnO3 (LSM) cathode for solid oxide fuel cells is a critical issue that can strongly affect the stability. In this study, we evaluate the temperature distribution in a SOFC based on a 3D model and then combine conductivity test and material computation to reveal the effects of chromium in SUS430 stainless steels on LSM conductivities. The starch concentration in LSM pellets and the applied pressure on the contact with interconnect materials show close relationships with the chromium poisoning behavior. The density functional theory (DFT) computing results indicate that chromium atoms preferably adsorb on the MnO2-terminated and La (Sr)-O-terminated (001) surfaces. The resulting conclusions are expected to deeply understand mechanism of chromium deactivating conventional cathodes at some typical operational conditions, and offer crucial information to optimize the structure to avoid the poisoning effect.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Nyckelord
- Chromium
- Conductivity
- Poisoning
- Solid oxide fuel cell
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- ref (ämneskategori)
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