Projects per year
Abstract
Metal nanoparticles support materials play a crucial role in many fields, including energy conversion/storage, catalysis and photochemistry. Here, the exsolution is reported as an in situ method to fabricate metal nanoparticles supported on perovskite (La0.52Ca0.28Ni0.06Ti0.94O3) powder and fiber materials. Significantly decreased polarisation resistance can be achieved by applying electrochemical switching within 3 min on the fiber electrode fuel cell to facilitate the exsolution. The fuel cell activated by electrochemical switching under wet hydrogen shows a promising performance with a maximum output power density of about 380 mW cm−2 at 900 °C in hydrogen. The phase-field model shows that the exsolution under extreme low oxygen partial pressure induced by electrochemical switching performs faster nucleation than the chemical-reduced case. This work provides a further understanding of electrochemically driven exsolution with fiber structure platform and simulation with phase-field models.
Original language | English |
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Pages (from-to) | 13007-13015 |
Number of pages | 9 |
Journal | Journal of Materials Chemistry A |
Volume | 11 |
Issue number | 24 |
Early online date | 11 Apr 2023 |
DOIs | |
Publication status | Published - 28 Jun 2023 |
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Dive into the research topics of 'Nanoparticle exsolution via electrochemical switching in perovskite fibers for solid oxide fuel cell electrodes'. Together they form a unique fingerprint.Projects
- 3 Finished
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Critical Mass: Emergrent Nanomaterials (Critcal Mass Proposal)
Irvine, J. T. S. (PI), Connor, P. A. (CoI) & Savaniu, C. D. (CoI)
1/06/18 → 31/01/23
Project: Standard
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Electon Microscopy: Electon Microscopy for the characterisation and manipulation of advanced function materials and their interfaces at the nanoscale
Irvine, J. T. S. (PI), Baker, R. (CoI) & Zhou, W. (CoI)
1/04/18 → 2/09/20
Project: Standard
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CRITICAT Equipment Account: CRITICAT Equipment Fund
Smith, A. D. (PI)
21/07/14 → 30/06/15
Project: Standard