Phase stabilization of La 2 NiO 4 in La x Ce 1−x O 2 :La 2 NiO 4 composites for solid oxide fuel cell applications

Cetin, Deniz; Poizeau, Sophie; Pietras, John; Gopalan, Srikanth

doi:10.1016/j.ssi.2017.05.001

Cited by 13 publications

(5 citation statements)

References 23 publications

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“…The structures of LNO and LDC in LNO-30LDC after sintered at 900, 1000, and 1100 ℃ for 10 h remained unchanged, which revealed no obvious chemical reaction occurs. Hence, the result confirmed the chemical compatibility between LNO and LDC, which is consistent with the previous report [26].…”

Section: Resultssupporting

confidence: 92%

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Electrochemical performance of La2NiO4+δ-Ce0.55La0.45O2−δ as a promising bifunctional oxygen electrode for reversible solid oxide cells

Yang

Tian

et al. 2021

J Adv Ceram

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In this work, La2NiO4+δ-xCe0.55La0.45O2−δ (denoted as LNO-xLDC) with various LDC contents (x = 0, 10, 20, 30, and 40 wt%) were prepared and evaluated as bifunctional oxygen electrodes for reversible solid oxide cells (RSOCs). Compared with the pure LNO, the optimum composition of LNO-30LDC exhibited the lowest polarization resistance (Rp) of 0.53 and 0.12 Ω·cm2 in air at 650 and 750 °C, respectively. The enhanced electrochemical performance of LNO-30LDC oxygen electrode was mainly attributed to the extended triple phase boundary and more oxygen ionic transfer channels. The hydrogen electrode supported single cell with LNO-30LDC oxygen electrode displayed peak power densities of 276, 401, and 521 mW·cm−2 at 700, 750, and 800 °C, respectively. Moreover, the electrolysis current density of the single cell demonstrated 526.39 mA·cm−2 under 1.5 V at 800 °C, and the corresponding hydrogen production rate was 220.03 mL·cm−2·h−1. The encouraging results indicated that LNO-30LDC was a promising bifunctional oxygen electrode material for RSOCs.

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Section: Resultssupporting

confidence: 92%

“…Decomposition of LNO in LNO-SDC composites was also observed after sintering at 1300 ℃ for 5 h, which led to the formation of Sm, La co-doped ceria Sm 0.2 La 0.23 Ce 0.57 O 2-δ [25]. Furthermore, a thermodynamics-based design for LNO:La x Ce 1-x O 2-δ composite indicated the improved phase stability [26].…”

Section: Introduction mentioning

confidence: 93%

Electrochemical performance of La2NiO4+δ-Ce0.55La0.45O2−δ as a promising bifunctional oxygen electrode for reversible solid oxide cells

Yang

Tian

et al. 2021

J Adv Ceram

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show abstract

“…Decomposition of LNO in LNO-SDC composites was observed after sintering at 1300 o C for 5 h, which lead to the formation of Sm, La co-doped ceria Sm 0.2 La 0.23 Ce 0.57 O 2-δ [24]. Furthermore, a thermodynamics-based design for LNO:La x Ce 1-x O 2-δ composite indicated the improved phase stability [25].…”

Section: Introductionmentioning

confidence: 98%

“…Although the LNO itself was thermodynamically stable, the possible solid state interaction between various components in LNO-based composite electrodes may occur at high temperature [23]. Decomposition of LNO in LNO-SDC composites was observed after sintering at 1300 o C for 5 h, which lead to the formation of Sm, La co-doped ceria Sm 0.2 La 0.23 Ce 0.57 O 2-δ [24]. Furthermore, a thermodynamics-based design for LNO:La x Ce 1-x O 2-δ composite indicated the improved phase stability [25].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical performance of La2NiO4+δ-Ce0.55La0.45O2-δ as a promising bifunctional oxygen electrode for reversible solid oxide cells

Yang

Tian

et al. 2020

Preprint

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In this work, La2NiO4+δ-xCe0.55La0.45O2-δ (denoted as LNO-xLDC) with various LDC contents (x = 0, 10, 20, 30 and 40, wt %) were prepared and evaluated as bifunctional oxygen electrodes for reversible solid oxide cells (RSOCs). Compared with the pure LNO, the optimum composition of LNO-30LDC exhibited the lowest polarization resistance (Rp) of 0.53 and 0.12 Ω·cm2 in air at 650 and 750 oC, respectively. The enhanced electrochemical performance of LNO-30LDC oxygen electrode was mainly attributed to the extended triple phase boundary and more oxygen ionic transfer channels. The hydrogen electrode supported single cell with LNO-30LDC oxygen electrode displayed peak power densities of 276, 401 and 521 mW·cm-2 at 700, 750 and 800 oC, respectively. Moreover, the electrolysis current density of the single cell demonstrated 526.39 mA·cm-2 under 1.5 V at 800 oC, and the corresponding hydrogen production rate was 220.03 ml·cm-2·h-1. The encouraging results indicated that LNO-30LDC was a promising bifunctional oxygen electrode material for RSOCs.

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“…However, one of the main drawbacks associated with these materials is the chemical reactivity with the electrolyte. For [22].…”

Section: Introductionmentioning

confidence: 99%

Stability and electrochemical performance of nanostructured La2CuO4+δ cathodes

Santos‐Gómez

Porras-Vázquez

Hurtado

et al. 2019

Journal of Alloys and Compounds

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La 2 CuO 4þd cathode layers are prepared by spray-pyrolysis deposition and their structural, microstructural and electrical properties are compared with those of submicrometric powders obtained from freeze-dried precursors. In order to improve the cathode performance, three different electrode architectures have been proposed: (i) powder cathodes obtained by conventional screen-printing and sintering, and cathodes deposited by spray-pyrolysis on: (ii) as-prepared electrolyte surfaces and (iii) porous electrolyte backbones. The cathode activity for the oxygen reduction reaction has been investigated as a function of the microstructure and the sintering temperature. The microstructural optimization of the cathodes and the low fabrication temperature minimize the instability problems between the electrolyte and the cathode materials, leading to polarization resistances as low as 0.14 U cm 2 at 600 C.

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Phase stabilization of La 2 NiO 4 in La x Ce 1−x O 2 :La 2 NiO 4 composites for solid oxide fuel cell applications

Cited by 13 publications

References 23 publications

Electrochemical performance of La2NiO4+δ-Ce0.55La0.45O2−δ as a promising bifunctional oxygen electrode for reversible solid oxide cells

Electrochemical performance of La2NiO4+δ-Ce0.55La0.45O2−δ as a promising bifunctional oxygen electrode for reversible solid oxide cells

Electrochemical performance of La2NiO4+δ-Ce0.55La0.45O2-δ as a promising bifunctional oxygen electrode for reversible solid oxide cells

Stability and electrochemical performance of nanostructured La2CuO4+δ cathodes

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