Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique

Keigo Kumada; Kazuhisa Sato; Toshiyuki Hashida

doi:10.1109/NANO.2016.7751562

Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique

Keigo Kumada, Kazuhisa Sato, Toshiyuki Hashida

Tohoku University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Citations (Scopus)

Abstract

This paper presents the experimental results of the investigation of mechanical damage in Solid Oxide Fuel Cell (SOFC) under fuel starvation conditions using in-situ Acoustic Emission (AE) and electrochemical technique. The cell was oxidized electrochemically and AE signal has begun to be detected when the oxidation spread from anode/electrolyte interface to anode substrate after Ni/NiO equilibrium. The hydrogen was supplied again and AE signal detection was stopped. Before and after Redox cycling, OCV showed the same value, but the maximum power density decreased by 50 %. After experiment, there was delamination in anode/electrolyte interface, but there was not electrolyte cracking in active cell area. In this experiment, the decrease of maximum power density is thought to be due to causing delamination in anode/electrolyte caused by electrochemical oxidation.

Original language	English
Title of host publication	16th International Conference on Nanotechnology - IEEE NANO 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	970-973
Number of pages	4
ISBN (Electronic)	9781509039142
DOIs	https://doi.org/10.1109/NANO.2016.7751562
Publication status	Published - 2016 Nov 21
Event	16th IEEE International Conference on Nanotechnology - IEEE NANO 2016 - Sendai, Japan Duration: 2016 Aug 22 → 2016 Aug 25

Publication series

Name	16th International Conference on Nanotechnology - IEEE NANO 2016

Conference

Conference	16th IEEE International Conference on Nanotechnology - IEEE NANO 2016
Country/Territory	Japan
City	Sendai
Period	16/8/22 → 16/8/25

Keywords

Acoustic Emission
Electrochemical impedance spectroscopy
Oxidation
Redox
Solid Oxide Fuel Cell

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10.1109/NANO.2016.7751562

Cite this

Kumada, K., Sato, K., & Hashida, T. (2016). Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique. In 16th International Conference on Nanotechnology - IEEE NANO 2016 (pp. 970-973). Article 7751562 (16th International Conference on Nanotechnology - IEEE NANO 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NANO.2016.7751562

Kumada, Keigo ; Sato, Kazuhisa ; Hashida, Toshiyuki. / Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique. 16th International Conference on Nanotechnology - IEEE NANO 2016. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 970-973 (16th International Conference on Nanotechnology - IEEE NANO 2016).

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title = "Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique",

abstract = "This paper presents the experimental results of the investigation of mechanical damage in Solid Oxide Fuel Cell (SOFC) under fuel starvation conditions using in-situ Acoustic Emission (AE) and electrochemical technique. The cell was oxidized electrochemically and AE signal has begun to be detected when the oxidation spread from anode/electrolyte interface to anode substrate after Ni/NiO equilibrium. The hydrogen was supplied again and AE signal detection was stopped. Before and after Redox cycling, OCV showed the same value, but the maximum power density decreased by 50 %. After experiment, there was delamination in anode/electrolyte interface, but there was not electrolyte cracking in active cell area. In this experiment, the decrease of maximum power density is thought to be due to causing delamination in anode/electrolyte caused by electrochemical oxidation.",

keywords = "Acoustic Emission, Electrochemical impedance spectroscopy, Oxidation, Redox, Solid Oxide Fuel Cell",

author = "Keigo Kumada and Kazuhisa Sato and Toshiyuki Hashida",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 16th IEEE International Conference on Nanotechnology - IEEE NANO 2016 ; Conference date: 22-08-2016 Through 25-08-2016",

year = "2016",

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doi = "10.1109/NANO.2016.7751562",

language = "English",

series = "16th International Conference on Nanotechnology - IEEE NANO 2016",

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Kumada, K, Sato, K & Hashida, T 2016, Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique. in 16th International Conference on Nanotechnology - IEEE NANO 2016., 7751562, 16th International Conference on Nanotechnology - IEEE NANO 2016, Institute of Electrical and Electronics Engineers Inc., pp. 970-973, 16th IEEE International Conference on Nanotechnology - IEEE NANO 2016, Sendai, Japan, 16/8/22. https://doi.org/10.1109/NANO.2016.7751562

Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique. / Kumada, Keigo; Sato, Kazuhisa ; Hashida, Toshiyuki.
16th International Conference on Nanotechnology - IEEE NANO 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 970-973 7751562 (16th International Conference on Nanotechnology - IEEE NANO 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique

AU - Kumada, Keigo

AU - Sato, Kazuhisa

AU - Hashida, Toshiyuki

PY - 2016/11/21

Y1 - 2016/11/21

N2 - This paper presents the experimental results of the investigation of mechanical damage in Solid Oxide Fuel Cell (SOFC) under fuel starvation conditions using in-situ Acoustic Emission (AE) and electrochemical technique. The cell was oxidized electrochemically and AE signal has begun to be detected when the oxidation spread from anode/electrolyte interface to anode substrate after Ni/NiO equilibrium. The hydrogen was supplied again and AE signal detection was stopped. Before and after Redox cycling, OCV showed the same value, but the maximum power density decreased by 50 %. After experiment, there was delamination in anode/electrolyte interface, but there was not electrolyte cracking in active cell area. In this experiment, the decrease of maximum power density is thought to be due to causing delamination in anode/electrolyte caused by electrochemical oxidation.

AB - This paper presents the experimental results of the investigation of mechanical damage in Solid Oxide Fuel Cell (SOFC) under fuel starvation conditions using in-situ Acoustic Emission (AE) and electrochemical technique. The cell was oxidized electrochemically and AE signal has begun to be detected when the oxidation spread from anode/electrolyte interface to anode substrate after Ni/NiO equilibrium. The hydrogen was supplied again and AE signal detection was stopped. Before and after Redox cycling, OCV showed the same value, but the maximum power density decreased by 50 %. After experiment, there was delamination in anode/electrolyte interface, but there was not electrolyte cracking in active cell area. In this experiment, the decrease of maximum power density is thought to be due to causing delamination in anode/electrolyte caused by electrochemical oxidation.

KW - Acoustic Emission

KW - Electrochemical impedance spectroscopy

KW - Oxidation

KW - Redox

KW - Solid Oxide Fuel Cell

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T3 - 16th International Conference on Nanotechnology - IEEE NANO 2016

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BT - 16th International Conference on Nanotechnology - IEEE NANO 2016

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Kumada K, Sato K , Hashida T. Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique. In 16th International Conference on Nanotechnology - IEEE NANO 2016. Institute of Electrical and Electronics Engineers Inc. 2016. p. 970-973. 7751562. (16th International Conference on Nanotechnology - IEEE NANO 2016). doi: 10.1109/NANO.2016.7751562

Investigation of mechanical damage of SOFC caused by electrochemical oxidation using in-situ acoustic emission and electrochemical technique

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