New life cycle inventories for end-of-life solid oxide cells based on novel recycling processes for critical solid oxide cell materials

Mori, Mitja (author), Gramc, Jure (author), Hojkar, Domen (author), Lotrič, Andrej (author), Smeacetto, Federico (author), Fiorilli, Sonia (author), Fiore, Silvia (author), Stropnik, Rok (author)

The study presents novel recycling processes for solid oxide cells as well as life cycle assessments (LCA) and life cycle inventory (LCI) analyses. A novel recovery process for the lanthanum-based materials lanthanum oxide and cobalt oxide from the End-of-Life recycling of SOC oxygen electrodes is described and evaluated. In addition, the recovery of yttria-stabilised zirconia and nickel oxide from end-of-life SOC fuel electrodes is presented. Both processes were analysed and a LCI is created for each recycling route. An environmental impact assessment is performed for each recovered material, hotspots and sub-processes are discussed and the results are presented in absolute and relative environmental impact indicator values. The results show that the amount and origin of electricity is one of the most important hotspots in the recycling processes alongside material recovery.

• Language: English
• Keywords: solid oxide cell, end-of-life, recycling processes, critical raw materials, life cycle inventories, life cycle assessment
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: Str. 635–650
• Numbering: Vol. 104
• PID: 20.500.12556/RUL-167016
• UDC: 502.171
• ISSN on article: 0360-3199
• DOI: 10.1016/j.ijhydene.2024.08.411
• COBISS.SI-ID: 208306179
• Publication date in RUL: 04.02.2025

Record is a part of a journal

• Title: International journal of hydrogen energy
• Shortened title: Int. j. hydrogen energy
• Publisher: Pergamon
• ISSN: 0360-3199
• COBISS.SI-ID: 3338511

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: študija življenjskih ciklov, gorivna celica s trdnim elektrolitom, analiza inventarja, zaključek življenjskega cikla, reciklaža, kritični materiali