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Design of Active Sites on Nickel in the Anode of Intermediate-Temperature Solid Oxide Fuel Cells using Trace Amount of Platinum Oxides

Andrii Rednyk, Toshiyuki Mori

2018enfuel cellsnickelplatinumoxidationanode

Abstract

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Solid oxide fuel cells (SOFCs) provide efficient energy conversion but face challenges related to their operating temperature and internal resistance. This study investigates the design of new active sites on nickel surfaces in the anode of intermediate-temperature solid oxide fuel cells (IT-SOFCs) through the deposition of trace amounts of platinum oxide (PtOx), followed by activation in a hydrogen flow. The experimental results indicate that the anode sputtered with PtOx exhibits a significantly higher internal resistance-free current density (185 mA cm/C0 2 at 0.8 V) compared to a conventional cermet anode (85 mA cm/C0 2 at 0.8 V) at 1073 K. Transmission electron microscopy reveals the formation of defect structures on partially oxidized nickel surfaces due to active platinum species, which enhances electrocatalytic activity. Additionally, surface atomistic simulations suggest the creation of Frenkel defect clusters with Pt cations, further promoting the anode's reactions by facilitating water molecule formation. These findings point to the importance of platinum oxide in enhancing nickel anode performance in SOFC applications.

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Cite This Work

@article{920655c9-029a-497f-a0b3-49ada3bda98b,
  title={Design of Active Sites on Nickel in the Anode of Intermediate-Temperature Solid Oxide Fuel Cells using Trace Amount of Platinum Oxides},
  author={Andrii Rednyk and Toshiyuki Mori},
  year={2018},
  language={en}
}
TY  - JOUR
TI  - Design of Active Sites on Nickel in the Anode of Intermediate-Temperature Solid Oxide Fuel Cells using Trace Amount of Platinum Oxides
AU  - Andrii Rednyk
AU  - Toshiyuki Mori
PY  - 2018
LA  - en
ER  -

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