Active, durable bismuth oxide-manganite composite oxygen electrodes: Interface formation induced by cathodic polarization

Chen, Minle; Cheng, Yi; He, Shuai; Ai, Na; Veder, Jean Pierre; Rickard, William D.A.; Saunders, Martin; Chen, Kongfa; Zhang, Teng; Jiang, San Ping

doi:10.1016/j.jpowsour.2018.07.012

Cited by 16 publications

(7 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…5(a), it implies that the applied ORR current may have caused it. Similar phenomenon has also been reported in LSM/Bi 1.6 Er 0.4 O 3 (ESB) OE, 14,15 where a continuous nanoscale ESB layer (ca. 50 nm) was reported to selfassemble at the cathode/electrolyte interface.…”

Section: Resultssupporting

confidence: 84%

“…The performance is higher than 0.45 W cm −2 of our previously tested cell with HE and electrolyte fabricated by uniaxial co-pressing method, 8 and comparable to the best reported results using HE supported cells with other LSM-Bi 2 O 3 composites as OE. 17,18 But the cell still has room to improve. For example, our previous study has shown that LSM/BYC OE using a one-pot method can further reduce R o and R p .…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Intermediate Temperature Solid Oxide Cell with a Barrier Layer Free Oxygen Electrode and Phase Inversion Derived Hydrogen Electrode

Zhang

Tang

et al. 2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

High-temperature solid oxide cells (SOCs) have fundamental advantages in efficiency and product rate over their low-temperature counterparts. However, the commercial development of SOCs is hindered by cost and reliability. To solve the issues, lowering the operating temperature of SOCs is deemed the best solution. Here we report on our effort toward intermediate temperature (IT) SOCs by developing a barrier layer free high-performance oxygen electrode and open structured hydrogen electrode. The results show that the new oxygen electrode provides reasonably good oxygen electrocatalytic activity at IT range for oxygen reduction and evolution reactions and the open structured hydrogen electrode provides low gas diffusion path for H2/H2O. However, at high electrolysis current density such as 1A/cm2 and 650oC, the present oxygen electrode delaminates after 200 hours. The phase-inversion derived open structured hydrogen electrode helps gas diffusion but, in the meantime, reduces reactive sites. A proper balance of porosity and number of reactive sites is still needed for future hydrogen electrode development.

show abstract

Section: Resultssupporting

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Intermediate Temperature Solid Oxide Cell with a Barrier Layer Free Oxygen Electrode and Phase Inversion Derived Hydrogen Electrode

Zhang

Tang

et al. 2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…In addition to Sr segregation, the surface segregation of B-site Mn cations in LSM and subsequent migration to YSZ electrolyte surfaces have also been observed under low oxygen partial pressures and cathodic polarization conditions [67][68][69][70][71]. For example, de Jong et al [71] annealed an LSM film in varied oxygen partial pressures and reported based on X-ray adsorption spectroscopy (XAS) that annealing in ultra-high vacuum conditions can result in strong increases in the peak assigned to Mn 2+ and that this peak intensity decreased in oxygen-rich environments due to the increased valence state of Mn cations.…”

Section: Lanthanum Strontium Manganite (Lsm)mentioning

confidence: 99%

Surface Segregation in Solid Oxide Cell Oxygen Electrodes: Phenomena, Mitigation Strategies and Electrochemical Properties

Chen

Jiang

2020

Electrochem. Energ. Rev.

Self Cite

118

View full text Add to dashboard Cite

Solid oxide cells (SOCs) are highly efficient and environmentally benign devices that can be used to store renewable electrical energy in the form of fuels such as hydrogen in the solid oxide electrolysis cell mode and regenerate electrical power using stored fuels in the solid oxide fuel cell mode. Despite this, insufficient long-term durability over 5–10 years in terms of lifespan remains a critical issue in the development of reliable SOC technologies in which the surface segregation of cations, particularly strontium (Sr) on oxygen electrodes, plays a critical role in the surface chemistry of oxygen electrodes and is integral to the overall performance and durability of SOCs. Due to this, this review will provide a critical overview of the surface segregation phenomenon, including influential factors, driving forces, reactivity with volatile impurities such as chromium, boron, sulphur and carbon dioxide, interactions at electrode/electrolyte interfaces and influences on the electrochemical performance and stability of SOCs with an emphasis on Sr segregation in widely investigated (La,Sr)MnO3 and (La,Sr)(Co,Fe)O3−δ. In addition, this review will present strategies for the mitigation of Sr surface segregation. Graphic Abstract

show abstract

“…Lee et al prepared 50% LSM-50% ESB composite cathode via the conventional physical mixed method and the cell with the ESB/GDC bilayer electrolyte achieved a maximum power density (MPD) of 1.01 W cm –2 at 650 °C . Several reports are presented about using the stabilized Bi 2 O 3 to modify the LSM − and the preparation methods are becoming progressively more diverse. However, most of them only focus on the impact on the SOFC performance; there are few studies that explore the RSOC field.…”

Section: Introductionmentioning

confidence: 99%

Promoting Electrocatalytic Activity and Stability via Er_0.4Bi_1.6O_3−δ In Situ Decorated La_0.8Sr_0.2MnO_3−δ Oxygen Electrode in Reversible Solid Oxide Cell

Liu

Tian

Wang

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Weak electrocatalytic activity of the La 0.8 Sr 0.2 MnO 3−δ (LSM) oxygen electrode at medium and low temperatures leads to decreasing performance both in the solid oxide fuel cell (SOFC) mode and the solid oxide electrolysis cell (SOEC) mode. Herein, we design an Er 0.4 Bi 1.6 O 3−δ (ESB) functionalized La 0.8 Sr 0.2 MnO 3−δ (labeled as LSM/ESB) oxygen electrode via a one-step co-synthesis modified Pechini method. The unique LSM/ESB with polarization resistance of only 0.029 Ω•cm 2 at 750 °C enables a highly enhanced rate of oxygen reduction and evolution reaction. The single cell with the LSM/ESB electrode achieves a maximum power density of 1.747 W cm −2 at 750 °C, 2.6 times higher than that of the mechanically mixed LSM−ESB electrode (0.667 W cm −2 ). In the SOEC mode, it also shows the improved performance of the LSM/ESB electrode. Furthermore, the cell exhibits admirable durability of 90 h in the fuel cell mode and excellent reversibility. The better performance can be concluded as a better surface-active state and a tighter connection between the LSM and ESB particles of LSM/ESB via a co-synthesis process. This work proposes a novel strategy to advance the application of the one-step modified Pechini technology for an efficient and stable oxygen electrode.

show abstract

Active, durable bismuth oxide-manganite composite oxygen electrodes: Interface formation induced by cathodic polarization

Cited by 16 publications

References 54 publications

Intermediate Temperature Solid Oxide Cell with a Barrier Layer Free Oxygen Electrode and Phase Inversion Derived Hydrogen Electrode

Intermediate Temperature Solid Oxide Cell with a Barrier Layer Free Oxygen Electrode and Phase Inversion Derived Hydrogen Electrode

Surface Segregation in Solid Oxide Cell Oxygen Electrodes: Phenomena, Mitigation Strategies and Electrochemical Properties

Promoting Electrocatalytic Activity and Stability via Er_0.4Bi_1.6O_3−δ In Situ Decorated La_0.8Sr_0.2MnO_3−δ Oxygen Electrode in Reversible Solid Oxide Cell

Contact Info

Product

Resources

About

Active, durable bismuth oxide-manganite composite oxygen electrodes: Interface formation induced by cathodic polarization

Cited by 16 publications

References 54 publications

Intermediate Temperature Solid Oxide Cell with a Barrier Layer Free Oxygen Electrode and Phase Inversion Derived Hydrogen Electrode

Intermediate Temperature Solid Oxide Cell with a Barrier Layer Free Oxygen Electrode and Phase Inversion Derived Hydrogen Electrode

Surface Segregation in Solid Oxide Cell Oxygen Electrodes: Phenomena, Mitigation Strategies and Electrochemical Properties

Promoting Electrocatalytic Activity and Stability via Er0.4Bi1.6O3−δ In Situ Decorated La0.8Sr0.2MnO3−δ Oxygen Electrode in Reversible Solid Oxide Cell

Contact Info

Product

Resources

About

Promoting Electrocatalytic Activity and Stability via Er_0.4Bi_1.6O_3−δ In Situ Decorated La_0.8Sr_0.2MnO_3−δ Oxygen Electrode in Reversible Solid Oxide Cell