In-situ patterned intra-anode triple phase boundary in SOFC electroless anode: An enhancement of electrochemical performance

Madhumita Mukhopadhyay; Jayanta Mukhopadhyay; Abhijit Das Sharma; Rajendra N. Basu

doi:10.1016/j.ijhydene.2011.03.114

In-situ patterned intra-anode triple phase boundary in SOFC electroless anode: An enhancement of electrochemical performance

Madhumita Mukhopadhyay, Jayanta Mukhopadhyay, Abhijit Das Sharma, Rajendra N. Basu

School of Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

Co-existence of intra-anode and conventional triple phase boundary (TPB) is reported for the first time in core (YSZ)-shell (Ni) electroless anode cermet. A mathematical model is proposed for determination of intra-anode TPB length and has been validated experimentally. Retention of longer intra-anode TPB even after repeated redox cycling is responsible for relatively lower conductivity degradation of such cermets. Existence of intra-anode TPB in electroless anode results in significant improvement of electrochemical performance. Single cells with electroless anode exhibit a current density of 2.5 A cm^-2 compared to cells with conventional anode (1.7A cm^-2) at 800 °C, 0.7 V.

Original language	English
Pages (from-to)	7677-7682
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	13
DOIs	https://doi.org/10.1016/j.ijhydene.2011.03.114
Publication status	Published - Jul 2011

Keywords

Anode-supported-SOFC
Electrochemical performance
Electroless anode
Intra-anode TPB
Modeling

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2011.03.114

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title = "In-situ patterned intra-anode triple phase boundary in SOFC electroless anode: An enhancement of electrochemical performance",

abstract = "Co-existence of intra-anode and conventional triple phase boundary (TPB) is reported for the first time in core (YSZ)-shell (Ni) electroless anode cermet. A mathematical model is proposed for determination of intra-anode TPB length and has been validated experimentally. Retention of longer intra-anode TPB even after repeated redox cycling is responsible for relatively lower conductivity degradation of such cermets. Existence of intra-anode TPB in electroless anode results in significant improvement of electrochemical performance. Single cells with electroless anode exhibit a current density of 2.5 A cm-2 compared to cells with conventional anode (1.7A cm-2) at 800 °C, 0.7 V.",

keywords = "Anode-supported-SOFC, Electrochemical performance, Electroless anode, Intra-anode TPB, Modeling",

author = "Madhumita Mukhopadhyay and Jayanta Mukhopadhyay and Sharma, {Abhijit Das} and Basu, {Rajendra N.}",

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T1 - In-situ patterned intra-anode triple phase boundary in SOFC electroless anode

T2 - An enhancement of electrochemical performance

AU - Mukhopadhyay, Madhumita

AU - Mukhopadhyay, Jayanta

AU - Sharma, Abhijit Das

AU - Basu, Rajendra N.

PY - 2011/7

Y1 - 2011/7

N2 - Co-existence of intra-anode and conventional triple phase boundary (TPB) is reported for the first time in core (YSZ)-shell (Ni) electroless anode cermet. A mathematical model is proposed for determination of intra-anode TPB length and has been validated experimentally. Retention of longer intra-anode TPB even after repeated redox cycling is responsible for relatively lower conductivity degradation of such cermets. Existence of intra-anode TPB in electroless anode results in significant improvement of electrochemical performance. Single cells with electroless anode exhibit a current density of 2.5 A cm-2 compared to cells with conventional anode (1.7A cm-2) at 800 °C, 0.7 V.

AB - Co-existence of intra-anode and conventional triple phase boundary (TPB) is reported for the first time in core (YSZ)-shell (Ni) electroless anode cermet. A mathematical model is proposed for determination of intra-anode TPB length and has been validated experimentally. Retention of longer intra-anode TPB even after repeated redox cycling is responsible for relatively lower conductivity degradation of such cermets. Existence of intra-anode TPB in electroless anode results in significant improvement of electrochemical performance. Single cells with electroless anode exhibit a current density of 2.5 A cm-2 compared to cells with conventional anode (1.7A cm-2) at 800 °C, 0.7 V.

KW - Anode-supported-SOFC

KW - Electrochemical performance

KW - Electroless anode

KW - Intra-anode TPB

KW - Modeling

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VL - 36

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JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 13

ER -

In-situ patterned intra-anode triple phase boundary in SOFC electroless anode: An enhancement of electrochemical performance

Abstract

Keywords

UN SDGs

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