TY - JOUR

T1 - Efficient ceramic anodes infiltrated with binary and ternary electrocatalysts for SOFCs operating at low temperatures

A1 - Abdul Jabbar,Mohammed Hussain

A1 - Høgh,Jens Valdemar Thorvald

A1 - Zhang,Wei

A1 - Bonanos,Nikolaos

AU - Abdul Jabbar,Mohammed Hussain

AU - Høgh,Jens Valdemar Thorvald

AU - Zhang,Wei

AU - Bonanos,Nikolaos

PB - Elsevier S.A.

PY - 2012

Y1 - 2012

N2 - Electrocatalyst precursor of various combinations: Pt, Ru, Pd, Ni and Gd-doped CeO2 (CGO) were infiltrated into a porous Sr0.94Ti0.9Nb0.1O3 (STN) backbone, to study the electrode performance of infiltrated ceramic anodes at low temperature ranges of 400–600 °C. The performance of the binary electrocatalyst infiltrated ceramic backbones are Pt–CGO>Ru–CGO>Pd–CGO>Ni–CGO. Ternary electrocatalyst of Ni–Pd–CGO and Ni–Pt–CGO showed the lowest polarization resistance of 0.31 and 0.11 Ωcm2, respectively at 600 °C in H2/3% H2O. The average particle size of the ternary electrocatalyst was larger than the binary Pd–CGO and Pt–CGO due to the particle coarsening of Ni nanoparticles. High resolution transmission electron microscopic analysis on the best performing Ni–Pt–CGO electrocatalyst infiltrated anode reveals the formation of Ni–Pt nanocrystalline alloy and a homogenous distribution of nanoparticles on STN backbone.

AB - Electrocatalyst precursor of various combinations: Pt, Ru, Pd, Ni and Gd-doped CeO2 (CGO) were infiltrated into a porous Sr0.94Ti0.9Nb0.1O3 (STN) backbone, to study the electrode performance of infiltrated ceramic anodes at low temperature ranges of 400–600 °C. The performance of the binary electrocatalyst infiltrated ceramic backbones are Pt–CGO>Ru–CGO>Pd–CGO>Ni–CGO. Ternary electrocatalyst of Ni–Pd–CGO and Ni–Pt–CGO showed the lowest polarization resistance of 0.31 and 0.11 Ωcm2, respectively at 600 °C in H2/3% H2O. The average particle size of the ternary electrocatalyst was larger than the binary Pd–CGO and Pt–CGO due to the particle coarsening of Ni nanoparticles. High resolution transmission electron microscopic analysis on the best performing Ni–Pt–CGO electrocatalyst infiltrated anode reveals the formation of Ni–Pt nanocrystalline alloy and a homogenous distribution of nanoparticles on STN backbone.

KW - Low temperature solid oxide fuel cell anodes

KW - Porous Sr0.94Ti0.9Nb0.1O3

KW - Infiltration

KW - Noble metals

KW - Ni and CGO electrocatalyst

U2 - 10.1016/j.jpowsour.2012.05.036

DO - 10.1016/j.jpowsour.2012.05.036

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

VL - 216

SP - 308

EP - 313

ER -