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Effect of Laser-derived Surface Re-melting of YSZ Electrolyte on Performance of Solid Oxide Fuel Cells

  • Hong Yi Kenneth Tan
  • Jong Dae Baek
  • Chen-Nan Sun
  • Jun Wei
  • Seong Hyuk LeeEmail author
  • Pei-Chen SuEmail author
Regular Paper
  • 29 Downloads

Abstract

A simple and effective technique to reduce the overall fuel cell polarization resistance was introduced on a conventionally sintered YSZ electrolyte by creating a hybrid microstructure using low-intensity CO2 laser scanning methods. After laser modification of the YSZ electrolyte surface on the cathode side, the overall polarization resistance was reduced from 513 to 124 Ω cm2, and the maximum power density was increased by 28% from 1.86 to 2.38 mW/cm2 at 450 °C. This improvement was due to the enhanced surface kinetics by higher grain boundary density on the YSZ surface from recrystallization after laser scanning.

Keywords

Solid oxide fuel cell CO2 laser Yttria-stabilized zirconia (YSZ) Cathode polarization 

Notes

Acknowledgement

The authors would like to acknowledge SIMTech-NTU Additive Manufacturing Joint Laboratory for funding this project. Also, this research was supported by the Chung-Ang University Research Grants in 2016.

Compliance with Ethical Standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Copyright information

© Korean Society for Precision Engineering 2019

Authors and Affiliations

  • Hong Yi Kenneth Tan
    • 1
    • 2
  • Jong Dae Baek
    • 2
    • 5
  • Chen-Nan Sun
    • 1
    • 3
  • Jun Wei
    • 1
    • 3
  • Seong Hyuk Lee
    • 4
    Email author
  • Pei-Chen Su
    • 1
    • 2
    Email author
  1. 1.SIMTech-NTU Joint Laboratory (3D Additive Manufacturing)Nanyang Technological UniversitySingaporeSingapore
  2. 2.School of Mechanical & Aerospace EngineeringNanyang Technological UniversitySingaporeSingapore
  3. 3.Singapore Institute of Manufacturing TechnologySingaporeSingapore
  4. 4.School of Mechanical EngineeringChung-Ang UniversitySeoulSouth Korea
  5. 5.Department of Automotive EngineeringYeungnam UniversityGyeongsanSouth Korea

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