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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 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 languageEnglish
Title of host publication16th International Conference on Nanotechnology - IEEE NANO 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages970-973
Number of pages4
ISBN (Electronic)9781509039142
DOIs
Publication statusPublished - 2016 Nov 21
Event16th IEEE International Conference on Nanotechnology - IEEE NANO 2016 - Sendai, Japan
Duration: 2016 Aug 222016 Aug 25

Publication series

Name16th International Conference on Nanotechnology - IEEE NANO 2016

Other

Other16th IEEE International Conference on Nanotechnology - IEEE NANO 2016
CountryJapan
CitySendai
Period16/8/2216/8/25

Keywords

  • Acoustic Emission
  • Electrochemical impedance spectroscopy
  • Oxidation
  • Redox
  • Solid Oxide Fuel Cell

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

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