Fabrication and properties of anode-supported solid oxide fuel cell

Han, Min−Koo; Yin, Hui-Yan; Miao, Wen-Ting; Zhou, Su

doi:10.1016/j.ssi.2008.02.035

Cited by 31 publications

(21 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the present work, the electrode performance is calculated as an overall reciprocal electrode resistance 1/R p , defined through Equation (13). 1/R p includes all types of losses and is calculated at a current density of 0.5 A/cm 2 .…”

Section: Resultsmentioning

confidence: 99%

“…Since in the operating temperature range of IT-SOFCs, cathode voltage losses are up to one order of magnitude higher than the corresponding anodic losses [8], the anode is the best choice to perform as a support. For this reason, among the various IT-SOFC geometries proposed in the literature, the anode-supported type has been extensively studied [1,13]. In this design, the anode has to ensure both electrochemical and mechanical requirements, often conflicting with each other.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling Analysis of Bi-Layer Ni-(ZrO2)x(Y2O3)1−x Anodes for Anode-Supported Intermediate Temperature-Solid Oxide Fuel Cells

2014

View full text Add to dashboard Cite

Abstract:Intermediate temperature-solid oxide fuel cell (IT-SOFC) Ni-(ZrO 2 ) x (Y 2 O 3 ) 1−x (Ni-YSZ) anodes formed by two layers, with different thicknesses and morphologies, offer the possibility of obtaining adequate electrochemical performance coupled to satisfactory mechanical properties. We investigate bi-layered Ni-YSZ anodes from a modeling point of view. The model includes reaction kinetics (Butler-Volmer equation), mass transport (Dusty-Gas model), and charge transport (Ohm's law), and allows to gain an insight into the distribution of the electrochemical reaction within the electrode. Additionally, the model allows to evaluate a reciprocal overall electrode resistance 1/R p ≈ 6 S· cm −2 for a bi-layer electrode formed by a 10 µm thick active layer (AL) composed of 0.25 µm radius Ni and YSZ particles (34% vol. Ni), coupled to a 700 µm thick support layer (SL) formed by 0.5 µm radius Ni and YSZ particles (50% vol. Ni), and operated at a temperature of 1023 K. Simulation results compare satisfactorily to literature experimental data. The model allows to investigate, in detail, the effect of morphological and geometric parameters on the various sources of losses, which is the first step for an optimized electrode design.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modeling Analysis of Bi-Layer Ni-(ZrO2)x(Y2O3)1−x Anodes for Anode-Supported Intermediate Temperature-Solid Oxide Fuel Cells

2014

View full text Add to dashboard Cite

show abstract

“…In order to increase the three phase boundary (TPB) length, fine NiO powders (1-3 µm) and YSZ powder were used to prepare functional anode powders, described in the reference (11). The NiO and YSZ powders were mixed in a weight ratio of 3:7 by ball milling for 12 hrs.…”

Section: Anode Active Functional Layermentioning

confidence: 99%

A Novel Co-firing Process for Multi-layers of Solid Oxide Fuel Cells

Han

et al. 2009

ECS Trans.

Self Cite

View full text Add to dashboard Cite

The major challenge for the commercialization of SOFCs is to reduce high manufacturing costs. By simplifying the sintering process and reducing the sintering temperature in the fabrication process, the manufacturing costs of SOFC could be lowered significantly. A low-temperature co-firing process for three layers of an SOFC including cathode (LSM/YSZ, [LSM:(La,Sr) MnO 3 ),YSZ:Y 2 O 3 -ZrO 2 ]), electrolyte(YSZ) and anode (YSZ/NiO) has been developed. The anode substrate of NiO/YSZ was formed and pre-sintered at 1000 o C for 2 hours, then the YSZ electrolyte layer and the LSM/YSZ cathode layer were deposited successively, and finally the anode-supported SOFCs were fabricated by cofiring at 1200 o C for 5 hours. In order to minimize the mismatch in sintering shrinkage among the components of the cell, various amounts of pore former were added to the anode and cathode layers. The mismatch in sintering shrinkage is minimized by adding 15wt% of pore former to the anode and 20wt% to the cathode. The OCV of the co-fired anode-supported trilayer cell was 1.05 V at 800 o C. The power density of this cell was 0.47 W/cm 2 at 800 o C.

show abstract

“…YSZ-based SOFCs are usually operated at temperatures reaching 800 °C to 1,000 °C [5,6]. Han et al [7] reported the maximum power density of 0.95 W/cm 2 at 800 °C for YSZ electrolyte-based anode-supported SOFCs using hydrogen as fuel and air as oxidant. Reducing the operating temperature can increase the lifetime and can expand the choices for the constituent materials [8].…”

Section: Introductionmentioning

confidence: 99%