Unraveling the Role of Transport, Electrocatalysis, and Surface Science in the Solid Oxide Fuel Cell Cathode Oxygen Reduction Reaction

2017 ◽  
Author(s):  
Srikanth Gopalan
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Solid Oxide Fuel Cell ◽  
Oxygen Reduction ◽  
Surface Science ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Fuel Cell Cathode

Self-Assembled Nano-Composite Perovskites as Highly Efficient and Robust Hybrid Cathode for Solid Oxide Fuel Cell

2021 ◽  
Author(s):  
Jun Hyuk Kim ◽  
Kyuseon Jang ◽  
Dae-Kwang Lim ◽  
Sejong Ahn ◽  
DongHwan Oh ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Solid Oxide Fuel Cell ◽  
Oxygen Reduction ◽  
Single Phase ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Nano Composite ◽  
Overall Performance

Oxygen reduction reaction, which proceeds at the cathode of a fuel cell, is primarily important as its rate determines the overall performance of the device. However, designing a single-phase material...

Atomic-layer-deposited ZrO2-doped CeO2 thin film for facilitating oxygen reduction reaction in solid oxide fuel cell

2019 ◽  
Vol 473 ◽  
pp. 102-106 ◽  
Author(s):  
Byung Chan Yang ◽  
Dohyun Go ◽  
Seongkook Oh ◽  
Jeong Woo Shin ◽  
Hyong June Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Solid Oxide Fuel Cell ◽  
Oxygen Reduction ◽  
Atomic Layer ◽  
Reduction Reaction ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Doped Ceo2

scholarly journals A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells

2017 ◽  
Vol 10 (4) ◽  
pp. 964-971 ◽  
Author(s):  
Yu Chen ◽  
Yan Chen ◽  
Dong Ding ◽  
Yong Ding ◽  
YongMan Choi ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Solid Oxide Fuel Cells ◽  
Solid Oxide Fuel Cell ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Solid Oxide ◽  
Oxide Fuel ◽  
Hybrid Catalyst ◽  
Fuel Cell Cathode

A hybrid catalyst coating dramatically enhances the electrocatalytic activity and durability of a solid oxide fuel cell cathode.

Multiscale Transient and Steady-State Study of the Influence of Microstructure Degradation and Chromium Oxide Poisoning on Solid Oxide Fuel Cell Cathode Performance

2018 ◽  
Vol 43 (1) ◽  
pp. 21-42 ◽  
Author(s):  
Guanchen Li ◽  
Michael R. von Spakovsky ◽  
Fengyu Shen ◽  
Kathy Lu
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Oxygen Reduction ◽  
Chromium Oxide ◽  
Spatial Scales ◽  
Solid Oxide ◽  
Heat Diffusion ◽  
Oxide Fuel ◽  
Fuel Cell Cathode ◽  
Cell Cathode

AbstractOxygen reduction in a solid oxide fuel cell cathode involves a nonequilibrium process of coupled mass and heat diffusion and electrochemical and chemical reactions. These phenomena occur at multiple temporal and spatial scales, making the modeling, especially in the transient regime, very difficult. Nonetheless, multiscale models are needed to improve the understanding of oxygen reduction and guide cathode design. Of particular importance for long-term operation are microstructure degradation and chromium oxide poisoning both of which degrade cathode performance. Existing methods are phenomenological or empirical in nature and their application limited to the continuum realm with quantum effects not captured. In contrast, steepest-entropy-ascent quantum thermodynamics can be used to model nonequilibrium processes (even those far-from equilibrium) at all scales. The nonequilibrium relaxation is characterized by entropy generation, which can unify coupled phenomena into one framework to model transient and steady behavior. The results reveal the effects on performance of the different timescales of the varied phenomena involved and their coupling. Results are included here for the effects of chromium oxide concentrations on cathode output as is a parametric study of the effects of interconnect-three-phase-boundary length, oxygen mean free path, and adsorption site effectiveness. A qualitative comparison with experimental results is made.

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