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Related Experiment Video

Updated: Feb 11, 2026

Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
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Conformal Nanocoating at the Electrode-Electrolyte Interface for Active and Durable Solid Oxide Electrochemical

Hyun Sik Yoo1, Yuhan Jung1, Yongguk Kim1

  • 1School of Mechanical Engineering, Sungkyunkwan University, Suwon, Gyeonggi-do 16419, Republic of Korea.

ACS Nano
|February 9, 2026
PubMed
Summary

Researchers developed a scalable method using La0.6Sr0.4CoO3 (LSC) nanocoating to enhance solid oxide electrochemical cells (SOECs). This interface engineering improves performance and durability for efficient energy conversion and hydrogen production.

Keywords:
delaminationelectrostatic spray depositioninterfacelarge areasolid oxide electrochemical cells

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Energy Conversion

Background:

  • Solid oxide electrochemical cells (SOECs) offer potential for efficient power generation and green hydrogen production.
  • Limited performance, durability, and scalable fabrication hinder widespread SOEC adoption.

Purpose of the Study:

  • To develop a scalable interface engineering strategy for enhancing SOEC performance and durability.
  • To address challenges in SOEC fabrication and long-term operation.

Main Methods:

  • Conformal deposition of a ~50 nm La0.6Sr0.4CoO3 (LSC) nanocoating on a Gd0.1Ce0.9O1.95 interlayer using electrostatic spray deposition.
  • Interface engineering to maximize contact and active reaction sites.

Main Results:

  • LSC-coated cells achieved a peak power density of 1.46 W/cm2 (fuel cell mode) and 1.78 A/cm2 at 1.3 V (electrolysis mode) at 700 °C.
  • Nanocoating mitigated electrode-electrolyte delamination, ensuring stable operation at high current densities for 100 hours.
  • Demonstrated enhanced interfacial contact and enlarged electrochemically active sites.

Conclusions:

  • The study presents a generalizable and manufacturable strategy for producing high-performance, durable SOECs.
  • Scalable nanoscale interface engineering is key to industrially viable SOECs.
  • This approach significantly improves SOEC efficiency and longevity.