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Towards durable and sustainable building power generation: Tuning oxygen vacancies and carrier mobility in La2-xBaxNiO4±𝛿 nickelates for high-efficiency solid oxide fuel cells
Zabihullah Jaweed1*
,
Pallavi Sharma2
,
Halan Ganesan3
,
Sukhpreet Singh4
,
Deepak Sharma4
,
Surya Kant Singh5
,
Ramesh Chand6
,
Ravinder Pal Singh7
,
Ankit Oza89
,
Manoj Kumar1011
1Research Scholar, School of Natural Sciences and Mathematics, Ural Federal University, Ekaterinburg, Russia
2Assistant Professor, Department of Applied Science and Humanities, Model Institute of Engineering and Technology, Jammu and Kashmir, India
3Professor, Mechanical Engineering Department, Sri Ranganathar College of Engineering and Technology, Coimbatore, Anna university, India
4Assistant Professor, Mechanical Engineering Department, KC Group of Research and Professional Institutes, Pandoga, Una, Himachal Pradesh, 177207, India
5Assistant Professor, Electrical Engineering Department, KC Group of Research and Professional Institutes, Pandoga, Una, Himachal Pradesh, 177207, India
6Assistant Professor, Mechanical Engineering Department, SIRDA Group of Institution, Naulakha Sunder Nagar, Mandi, Himachal Pradesh, India
7Professor, School of Mechanical Engineering, Lovely Professional University, Phagwara, Punjab, India
8Researcher, Department of Technical Sciences, Western Caspian University, Baku, Azerbaijan
9Researcher, Centre for Research Impact & Outcome, Chitkara University Institute of Engineering and Technology, Chitkara University, Rajpura, 140401, Punjab, India
10Researcher, Department of Mechanical Engineering and Renewable Energy, Technical Engineering College, The Islamic University, Najaf, Iraq
11Researcher, Department of Mechanical Engineering, Lloyd Institute of Engineering & Technology, Knowledge Park II, Greater Noida, Uttar Pradesh 201306, India
*Corresponding Author
30 June 2026. pp. 353-365
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Abstract

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.

Keywords
fuel cells
electrolytes
green energy
sustainability
climate change
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Information
  • 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
  • Received Date : 2026-06-02
  • Accepted Date : 2026-06-12
  • DOI :https://doi.org/10.22712/susb.20260020
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