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This work investigates the Ruddlesden-Popper (RP) nickelates La2-xBaxNiO4±δ as cathode materials for solid oxide fuel cells. Single phase samples with x = 0.2, 0.6 and 0.9 have been prepared and characterized for crystal structure, oxygen non-stoichiometry, electrical conductivity and thermal expansion. Of the compositions studied, La1.1Ba0.9NiO4±δ exhibited highest electrical conductivity and La1.4Ba0.6NiO4±δ exhibited better structural stability and less oxygen loss. The results demonstrate that moderate Ba doping improves oxygen vacancy formation and charge transport, and thus these nickelates are promising candidates for intermediate temperature SOFC cathodes.
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- Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
- Publisher(Ko) :건설구조물 내구성혁신 연구센터
- Journal Title :International Journal of Sustainable Building Technology and Urban Development
- Volume : 17
- No :2
- Pages :353-365
- DOI :https://doi.org/10.22712/susb.20260020


International Journal of Sustainable Building Technology and Urban Development









