Strong Metal Support Interactions of Infiltrated Ni with TiO2 in a Porous YSZ Anode Matrix – A Possible Method for Ni-Stabilization

Venkatesan Venkata Krishnan; C A Singh; L Bansal; P Tiwari

doi:10.1149/1.3205732

Strong Metal Support Interactions of Infiltrated Ni with TiO2 in a Porous YSZ Anode Matrix – A Possible Method for Ni-Stabilization

Venkatesan Venkata Krishnan, C A Singh, L Bansal, P Tiwari

Research output: Contribution to journal › Conference article › peer-review

Abstract

Sintering of Ni infiltrated into porous anodes in SOFCs is reported to be responsible for loss in performance. The idea of introducing strong metal support interactions (SMSI) has been investigated as a possible method for curbing the sintering of Ni. Titania, when used as a support in catalysts, has been found to show SMSI behavior with metals, dispersed on its surface. Porous anodes, typically used as the SOFC support (anode supported cells), containing titania and Ni have been prepared using impregnation methods and characterized using Chemisorption, Scanning Electron Microscopy (SEM) and XRD studies. SEM results do indicate strong wetting of nickel particles with titania after reduction at 800°C and reduced amount of sintering on prolonged exposures in hydrogen at high temperature. Hydrogen chemisorption studies also revealed a sharp drop in Ni dispersion from 5.3% to less than 1%, due to the presence of titania, at 800oC confirming SMSI effects in Ni-TiO2-YSZ systems.

Original language	English
Journal	ECS Transactions
Volume	25
Issue number	2
Early online date	4 Oct 2009
DOIs	https://doi.org/10.1149/1.3205732
Publication status	Published - 4 Oct 2009

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title = "Strong Metal Support Interactions of Infiltrated Ni with TiO2 in a Porous YSZ Anode Matrix – A Possible Method for Ni-Stabilization",

abstract = "Sintering of Ni infiltrated into porous anodes in SOFCs is reported to be responsible for loss in performance. The idea of introducing strong metal support interactions (SMSI) has been investigated as a possible method for curbing the sintering of Ni. Titania, when used as a support in catalysts, has been found to show SMSI behavior with metals, dispersed on its surface. Porous anodes, typically used as the SOFC support (anode supported cells), containing titania and Ni have been prepared using impregnation methods and characterized using Chemisorption, Scanning Electron Microscopy (SEM) and XRD studies. SEM results do indicate strong wetting of nickel particles with titania after reduction at 800°C and reduced amount of sintering on prolonged exposures in hydrogen at high temperature. Hydrogen chemisorption studies also revealed a sharp drop in Ni dispersion from 5.3% to less than 1%, due to the presence of titania, at 800oC confirming SMSI effects in Ni-TiO2-YSZ systems.",

author = "Krishnan, {Venkatesan Venkata} and Singh, {C A} and L Bansal and P Tiwari",

year = "2009",

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doi = "10.1149/1.3205732",

language = "English",

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T1 - Strong Metal Support Interactions of Infiltrated Ni with TiO2 in a Porous YSZ Anode Matrix – A Possible Method for Ni-Stabilization

AU - Krishnan, Venkatesan Venkata

AU - Singh, C A

AU - Bansal, L

AU - Tiwari, P

PY - 2009/10/4

Y1 - 2009/10/4

N2 - Sintering of Ni infiltrated into porous anodes in SOFCs is reported to be responsible for loss in performance. The idea of introducing strong metal support interactions (SMSI) has been investigated as a possible method for curbing the sintering of Ni. Titania, when used as a support in catalysts, has been found to show SMSI behavior with metals, dispersed on its surface. Porous anodes, typically used as the SOFC support (anode supported cells), containing titania and Ni have been prepared using impregnation methods and characterized using Chemisorption, Scanning Electron Microscopy (SEM) and XRD studies. SEM results do indicate strong wetting of nickel particles with titania after reduction at 800°C and reduced amount of sintering on prolonged exposures in hydrogen at high temperature. Hydrogen chemisorption studies also revealed a sharp drop in Ni dispersion from 5.3% to less than 1%, due to the presence of titania, at 800oC confirming SMSI effects in Ni-TiO2-YSZ systems.

AB - Sintering of Ni infiltrated into porous anodes in SOFCs is reported to be responsible for loss in performance. The idea of introducing strong metal support interactions (SMSI) has been investigated as a possible method for curbing the sintering of Ni. Titania, when used as a support in catalysts, has been found to show SMSI behavior with metals, dispersed on its surface. Porous anodes, typically used as the SOFC support (anode supported cells), containing titania and Ni have been prepared using impregnation methods and characterized using Chemisorption, Scanning Electron Microscopy (SEM) and XRD studies. SEM results do indicate strong wetting of nickel particles with titania after reduction at 800°C and reduced amount of sintering on prolonged exposures in hydrogen at high temperature. Hydrogen chemisorption studies also revealed a sharp drop in Ni dispersion from 5.3% to less than 1%, due to the presence of titania, at 800oC confirming SMSI effects in Ni-TiO2-YSZ systems.

U2 - 10.1149/1.3205732

DO - 10.1149/1.3205732

M3 - Conference article

SN - 1938-5862

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JO - ECS Transactions

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ER -

Strong Metal Support Interactions of Infiltrated Ni with TiO2 in a Porous YSZ Anode Matrix – A Possible Method for Ni-Stabilization

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