Development of multi-step acid/redox-based process for recovery of solid oxide cells components

Abstract

Recycling pathways for end-of-life cells or waste production must be established to improve the lifecycle of solid oxide cells and develop more sustainable hydrogen production systems. This work details a multi-step procedure allowing the separation and recovery processes of a commercial cell based on the different solubility and redox properties of its constituent materials, i.e. LSCF, NiO, GDC, and YSZ. Commonly used nitric acid solutions or mixed nitric acid and hydrogen peroxide solutions at varying concentrations are the only necessary reagents. Each recovered material was fully characterized by X-ray powder diffraction, ICP-AES and EDX. This innovative step-by-step method allows the treatment of more than 95 % of the initial mass of the cell, the separation of YSZ and GDC, and the recovery of NiO and YSZ at respective commercial grade purities of 99 and 95 wt%.

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BibTeX RIS

BibTeX

@article{brard2026development,
  title = {{Development of multi-step acid/redox-based process for recovery of solid oxide cells components}},
  author = {Valentin Brard and Olivier Joubert and Annie Le Gal La Salle},
  journal = {International Journal of Hydrogen Energy},
  year = {2026},
  month = oct,
  doi = {10.1016/j.ijhydene.2025.150674},
  url = {https://hal.science/hal-05340456v2},
  note = {CC BY-NC-ND 4.0},
}

RIS

TY  - JOUR
TI  - Development of multi-step acid/redox-based process for recovery of solid oxide cells components
AU  - Valentin Brard
AU  - Olivier Joubert
AU  - Annie Le Gal La Salle
PY  - 2026
DA  - 2026/10/06
JO  - International Journal of Hydrogen Energy
DO  - 10.1016/j.ijhydene.2025.150674
UR  - https://hal.science/hal-05340456v2
AB  - Recycling pathways for end-of-life cells or waste production must be established to improve the lifecycle of solid oxide cells and develop more sustainable hydrogen production systems. This work details a multi-step procedure allowing the separation and recovery processes of a commercial cell based on the different solubility and redox properties of its constituent materials, i.e. LSCF, NiO, GDC, and YSZ. Commonly used nitric acid solutions or mixed nitric acid and hydrogen peroxide solutions at varying concentrations are the only necessary reagents. Each recovered material was fully characterized by X-ray powder diffraction, ICP-AES and EDX. This innovative step-by-step method allows the treatment of more than 95 % of the initial mass of the cell, the separation of YSZ and GDC, and the recovery of NiO and YSZ at respective commercial grade purities of 99 and 95 wt%.
SN  - 0360-3199
SN  - 1879-3487
ER  -

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