Chromium poisoning and degradation at LaNi0.6Fe0.4O3 cathode with LaNi0.6Fe0.4O3–Gd0.2Ce0.8O2 functional layer for SOFC under open circuit condition

Huang, Bo; Xing, Yanfeng; Xu, Lei; Tan, Xuan; Xu, Sheng; Zhang, Heng-yun; Wang, Yansong

doi:10.1007/s10008-018-3923-1

Cited by 8 publications

(2 citation statements)

References 41 publications

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“…As an example of this, Stodolny et al [203] observed that electrodes with high porosities, small grain sizes and larger particle surface areas were more susceptible to chromium poisoning with respect to both increases in resistance and deposition of chromium. Impregnation of LNF with GDC has demonstrated improved electrochemical performance, whilst also offering the opportunity to still further improve resistance to chromium poisoning [204][205][206]. This is believed to result from the increase of the TPB area and, hence, the increase in the number of reaction sites.…”

Section: Figure 7 -Overpotential Vs Time For Four Different Cathode M...mentioning

confidence: 99%

A review of Solid Oxide Fuel Cell cathode materials with respect to their resistance to the effects of chromium poisoning

2020

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Section: Figure 7 -Overpotential Vs Time For Four Different Cathode M...mentioning

confidence: 99%

A review of Solid Oxide Fuel Cell cathode materials with respect to their resistance to the effects of chromium poisoning

2020

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“…However, the search for Sr-free cathodes has not been smooth sailing. For example, Sr-free cathodes such as La(Ni,Fe)O 3−δ, , La 2 NiO 4 , , and Nd 2 NiO 4 have been studied. While they have been shown to be more Cr-tolerant than LSCF, they have low intrinsic oxygen reduction reaction (ORR) activity and limited material compatibility with other cell components.…”

Section: Introductionmentioning

confidence: 99%

Improved Durability of High-Performance Intermediate-Temperature Solid Oxide Fuel Cells with a Ba-Doped La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ Cathode

Xie

Cai

Liu

et al. 2022

ACS Appl. Mater. Interfaces

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As a device for direct conversion of chemical energy into electrical energy, the solid oxide fuel cell (SOFC) contributes positively to the sustainable development strategy. However, the commercialization of fuel cells is still impeded by severe cathode degradation caused by its limited stability at operating temperatures and being prone to Cr-poisoning from Cr-containing alloy interconnectors commonly used in these cells. This paper reports the development of a high-durability Ba-doped LSCF(La 0.6 Sr 0.4 Co 0.2 Fe 0.8 O 3−δ ) cathode material under realistic fuel cell operating conditions in the presence of the Cr alloy. In particular, when tested in a symmetrical cell constructed of Ba-doped LSCF, the polarization resistance of the cell remains very low at 0.06 Ω cm 2 after being tested at 800 °C for 120 h exposed to Cr in 3% humidified air. In contrast, for the undoped LSCF under the same testing conditions, the polarization resistance of the cell increases ∼10 times from 0.22 Ω cm 2 of the pristine cell to 2.18 Ω cm 2 after Cr-exposure testing. Furthermore, when tested in an anode-supported complete cell as a cathode under typical SOFC operation conditions at 750 °C, the cell with the Ba-doped LSCF cathode displays significantly low degradation rates of 0.00056% h −1 (without Cr) and 0.00310% h −1 (with Cr); both are much lower than that of the cell using the undoped LSCF cathode (0.00124% h −1 without Cr and 0.01082% h −1 with Cr). This enhanced durability and Cr-tolerance exhibited by the Ba-doped LSCF cathode stem from its higher crystal structure stability and improved chemical resistance compared to undoped LSCF.

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An overview of degradation in solid oxide fuel cells-potential clean power sources

Sreedhar

Agarwal

Goyal

et al. 2020

J Solid State Electrochem

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Chromium poisoning and degradation at LaNi0.6Fe0.4O3 cathode with LaNi0.6Fe0.4O3–Gd0.2Ce0.8O2 functional layer for SOFC under open circuit condition

Cited by 8 publications

References 41 publications

A review of Solid Oxide Fuel Cell cathode materials with respect to their resistance to the effects of chromium poisoning

A review of Solid Oxide Fuel Cell cathode materials with respect to their resistance to the effects of chromium poisoning

Improved Durability of High-Performance Intermediate-Temperature Solid Oxide Fuel Cells with a Ba-Doped La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ Cathode

An overview of degradation in solid oxide fuel cells-potential clean power sources

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Chromium poisoning and degradation at LaNi0.6Fe0.4O3 cathode with LaNi0.6Fe0.4O3–Gd0.2Ce0.8O2 functional layer for SOFC under open circuit condition

Cited by 8 publications

References 41 publications

A review of Solid Oxide Fuel Cell cathode materials with respect to their resistance to the effects of chromium poisoning

A review of Solid Oxide Fuel Cell cathode materials with respect to their resistance to the effects of chromium poisoning

Improved Durability of High-Performance Intermediate-Temperature Solid Oxide Fuel Cells with a Ba-Doped La0.6Sr0.4Co0.2Fe0.8O3−δ Cathode

An overview of degradation in solid oxide fuel cells-potential clean power sources

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Improved Durability of High-Performance Intermediate-Temperature Solid Oxide Fuel Cells with a Ba-Doped La_0.6Sr_0.4Co_0.2Fe_0.8O_3−δ Cathode