Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Exploring the Role of Humidity, Temperature, and Mixed Ionic and Electronic Conductivity on SOFC Anode Electrocatalysis

Journal Article · · JOM. Journal of the Minerals, Metals & Materials Society
 [1];  [2];  [2];  [2];  [2]
  1. Boston Univ., MA (United States); Boston University
  2. Boston Univ., MA (United States)
+ Show Author Affiliations
Infiltration of nanoscale electrocatalysts into Ni/yttria-stabilized zirconia (Ni-YSZ) cermets has been shown to improve the electrochemical performance of solid oxide fuel cell (SOFC) anodes. While infiltrated electrodes in SOFCs result in improved cell performance, long-term operation leads to coarsening of the infiltrated nanoparticles and negates the short-term performance improvements. This study explores the roles of humidity, temperature, and number of cycles of nanocatalyst infiltration in improving mixed conduction within the Ni-YSZ electrode. Two mixed conduction phases were studied: Gd0.1Ce0.9O2-δ (GDC) as an infiltrant into Ni-YSZ electrodes, and Ni/transition metal doped-YSZ electrodes infiltrated with Ni. Analysis of impedance data from these cells shows improved electrochemical performance in infiltrated cells with mixed conduction compared with infiltrated cells containing purely ionic and electronic conducting phases. Improved anode performance is attributed to the availability of electronic pathways through predominantly ionic-conducting phases to connect distant Ni nanoparticles and/or Ni grains.
Research Organization:
Boston Univ., MA (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0026096
OSTI ID:
1833223
Journal Information:
JOM. Journal of the Minerals, Metals & Materials Society, Journal Name: JOM. Journal of the Minerals, Metals & Materials Society Journal Issue: 9 Vol. 73; ISSN 1047-4838
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (23)

Fuel Cell Fundamentals book January 2016
Anode-supported solid oxide fuel cells with ion conductor infiltration
  • Timurkutluk, Bora; Timurkutluk, Cigdem; Mat, Mahmut D.
  • International Journal of Energy Research, Vol. 35, Issue 12, p. 1048-1055 https://doi.org/10.1002/er.1832
journal March 2011
Nickel–Zirconia Anode Degradation and Triple Phase Boundary Quantification from Microstructural Analysis journal December 2009
Role of titania on the sintering, microstructure and fracture toughness of Al2O3/ZrO2 composites journal January 1988
Densification and conductivity enhancement of Na4Zr2Si3O12-based solid electrolytes using TiO2 as a sintering aid journal May 1999
SOFC anodes based on infiltration of tungsten bronzes journal December 2011
Comparison of the performance of Cu–CeO2–YSZ and Ni–YSZ composite SOFC anodes with H2, CO, and syngas journal March 2005
Improved microstructure and performance of Ni-based anode for intermediate temperature solid oxide fuel cells journal February 2014
Improving intermediate temperature performance of Ni-YSZ cermet anodes for solid oxide fuel cells by liquid infiltration of nickel nanoparticles journal August 2018
Mechanisms of PrOx performance enhancement of oxygen electrodes for low and intermediate temperature solid oxide fuel cells journal December 2019
Unravelling inherent electrocatalysis of mixed-conducting oxide activated by metal nanoparticle for fuel cell electrodes journal February 2019
Enhancement of Ni–(Y 2 O 3 ) 0.08 (ZrO 2 ) 0.92 fuel electrode performance by infiltration of Ce 0.8 Gd 0.2 O 2−δ nanoparticles journal January 2020
Lowering the Temperature of Solid Oxide Fuel Cells journal November 2011
Microstructural Modeling and Effective Properties of Infiltrated SOFC Electrodes journal October 2013
Enhancing Anodic Catalytic Activity at High Fuel Utilization By Infiltration of Ni Nanoparticles journal May 2017
Effect of Infiltration on Performance of Ni-YSZ Fuel Electrodes journal July 2019
Role of Hydrocarbon Deposits in the Enhanced Performance of Direct-Oxidation SOFCs journal January 2003
Combined Deconvolution and CNLS Fitting Approach Applied on the Impedance Response of Technical Ni∕8YSZ Cermet Electrodes journal January 2008
SOFC Modeling and Parameter Identification by Means of Impedance Spectroscopy journal May 2009
Measurements and Modeling of Sm[sub 0.5]Sr[sub 0.5]CoO[sub 3−x]–Ce[sub 0.9]Gd[sub 0.1]O[sub 1.95] SOFC Cathodes Produced Using Infiltrate Solution Additives journal January 2010
Characterizing Performance of Electrocatalyst Nanoparticles Infiltrated into Ni-YSZ Cermet Anodes for Solid Oxide Fuel Cells journal January 2020
Improving SOFC Anode Electrocatalytic Activity Using Nanoparticle Infiltration into MIEC Compositions journal January 2020
Alternative Ni-Impregnated Mixed Ionic-Electronic Conducting Anode for SOFC Operation at High Fuel Utilization journal January 2017

Similar Records

Related Subjects

25 ENERGY STORAGE