DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Degradation Comparison of Cyclic and Linear Siloxane Contamination on Solid Oxide Fuel Cells Ni-YSZ Anode

Journal Article · · Frontiers in Energy Research
 [1];  [1]
  1. Arizona State Univ., Tempe, AZ (United States)

The solid oxide fuel cell (SOFC) nickel-yttria stabilized zirconia (Ni-YSZ) anode degradation due to different types of siloxane contamination is investigated. A cyclic structure siloxane, octamethylcyclotetrasiloxane (D4), and a linear structure siloxane, decamethyltetrasiloxane (L4), are mixed with H2+N2 as the fuel for SOFCs at 750°C. The electrochemical characterization results after stability experiments suggest that the SOFC contaminated with cyclic siloxane, D4, had higher degradation. Pure YSZ pellets with different surface hydroxylation extents were also tested to investigate the D4/L4 adsorption and deposition process. Postmortem SEM/WDS, XRD and Raman analysis all indicate that cyclic siloxane has more deposition than linear siloxane on the anode. Further analysis demonstrates that high adsorption and low desorption rates of cyclic siloxane on YSZ are linked to the degradation. Besides the silicon deposition, SiC and amorphous carbon deposition were also observed from the XRD and Raman analysis.

Research Organization:
Arizona State Univ., Tempe, AZ (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
EE0007721
OSTI ID:
1826971
Alternate ID(s):
OSTI ID: 1863585
Journal Information:
Frontiers in Energy Research, Vol. 9; ISSN 2296-598X
Publisher:
Frontiers Research FoundationCopyright Statement
Country of Publication:
United States
Language:
English

References (48)

Improved structural stability and electrochemical performance of 8YSZ electrolyte by MxOy doping for low temperature solid oxide fuel cells (LT-SOFCs) journal November 2017
Raman spectroscopy of graphene and graphite: Disorder, electron–phonon coupling, doping and nonadiabatic effects journal July 2007
Analysis of Electrochemical Impedance Spectroscopy Data Using the Distribution of Relaxation Times: A Bayesian and Hierarchical Bayesian Approach journal June 2015
Concentrations and assessment of exposure to siloxanes and synthetic musks in personal care products from China journal December 2011
Siloxane Deposition on the Ni-YSZ Solid Oxide Fuel Cell Anode Exposed to Bio-Syngas journal April 2021
Solid oxide fuel cell anode degradation by the effect of siloxanes journal April 2015
Stability study of SOFC using layered perovskite oxide La1·85Sr0·15CuO4 mixed with ionic conductor as membrane journal February 2020
Model-assisted identification of solid oxide cell elementary processes by electrochemical impedance spectroscopy measurements journal October 2019
Degradation of SOFCs by Various Impurities: Impedance Spectroscopy and Microstructural Analysis journal May 2017
Life Cycle Assessment (LCA) of biogas-fed Solid Oxide Fuel Cell (SOFC) plant journal May 2017
Investigating the degradation mechanism of the solid oxide fuel cell nickel-yttria stabilized zirconia anode under siloxane contamination journal December 2020
Size dependent grain-boundary conductivity in doped zirconia journal February 2001
Techno-Economic Assessment of CHP Systems in Wastewater Treatment Plants journal September 2020
Analysis of Impedance and Admittance Data for Solids and Liquids journal July 1977
Performance of a Solid Oxide Fuel Cell short-stack with biogas feeding journal July 2014
Environmental Chemistry of Organosiloxanes journal November 2014
Poisoning of SOFC anodes by various fuel impurities journal September 2008
Techno-economic analysis of solid oxide fuel cell-based combined heat and power systems for biogas utilization at wastewater treatment facilities journal July 2013
Surface emission of landfill gas from solid waste landfill journal July 2001
Bayesian and Hierarchical Bayesian Based Regularization for Deconvolving the Distribution of Relaxation Times from Electrochemical Impedance Spectroscopy Data journal September 2017
Degradation evaluation by distribution of relaxation times analysis for microtubular solid oxide fuel cells journal April 2020
Dealing with fuel contaminants in biogas-fed solid oxide fuel cell (SOFC) and molten carbonate fuel cell (MCFC) plants: Degradation of catalytic and electro-catalytic active surfaces and related gas purification methods journal July 2017
Damage of Siloxanes on Ni-YSZ Anode Supported SOFC Operated on Hydrogen and Bio-Syngas journal September 2015
The effect of H2S on the performance of Ni–YSZ anodes in solid oxide fuel cells journal June 2009
The analysis of volatile siloxanes in waste activated sludge journal November 2007
Impedance of SOFC electrodes: A review and a comprehensive case study on the impedance of LSM:YSZ cathodes journal January 2014
Limiting factors for planar solid oxide fuel cells under different trace compound concentrations journal January 2016
Microanalysis of a Grain Boundary’s Blocking Effect in Lanthanum Silicate Electrolyte for Intermediate-Temperature Solid Oxide Fuel Cells journal June 2013
Polydimethylsiloxane at the interfaces of fumed silica and zirconia/fumed silica journal June 2007
Oxygen diffusion through silver cathodes for solid oxide fuel cells journal April 1994
Influence of the Discretization Methods on the Distribution of Relaxation Times Deconvolution: Implementing Radial Basis Functions with DRTtools journal December 2015
Methane reforming kinetics within a Ni–YSZ SOFC anode support journal October 2005
Results from an industrial size biogas-fed SOFC plant (the DEMOSOFC project) journal February 2020
Raman spectroscopy of cobalt ferrite nanocomposite in silica matrix prepared by sol–gel method journal June 2006
Investigation of volatile methyl siloxanes in biogas and the ambient environment in a landfill journal May 2020
Hydrogen Surface Reactions and Adsorption Studied on Y 2 O 3 , YSZ, and ZrO 2 journal April 2014
Experimental and theoretical study of deactivated HDT catalysts by Si species deposited on their surfaces: Models proposition, structural and thermodynamic analysis journal September 2020
Investigation of a Combined Hydrogen and Oxygen Spillover Mechanism for Syngas Electro-Oxidation on Ni/YSZ journal December 2016
Complete Raman Spectral Assignment of Methanol in the C–H Stretching Region journal May 2013
Electronic structure and charge transfer in 3C- and 4H-SiC journal February 2000
Electrochemical Impedance Analysis of SOFC with Transmission Line Model Using Distribution of Relaxation Times (DRT) journal July 2020
Techniques for transformation of biogas to biomethane journal May 2011
Electrical properties of the grain boundaries of oxygen ion conductors: Acceptor-doped zirconia and ceria journal February 2006
Biogas: Developments and perspectives in Europe journal December 2018
Decomposition of hexamethylcyclotrisiloxane over solid oxides journal August 2008
Removal of siloxanes in biogases journal May 2001
SOFC single cells fed by biogas: Experimental tests with trace contaminants journal February 2018
Enhanced specific grain boundary conductivity in nanocrystalline Y2O3-stabilized zirconia journal March 1999