Recent advances in layered Ln<sub>2</sub>NiO<sub>4+δ</sub> nickelates: fundamentals and prospects of their applications in protonic ceramic fuel and electrolysis cells

Tarutin, Artem P.; Lyagaeva, Julia G.; Medvedev, Dmitry; Bi, Lei; Yaremchenko, A.A.

doi:10.1039/d0ta08132a

Cited by 166 publications

(99 citation statements)

References 474 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reason for this anisotropic behavior is the removal of interstitial oxygen and the reduction of Ni ions. While this causes shortening of average La/Ca-O distance and thickness of the rock salt layer, it also extends the average Ni-O bond length, thus expanding the structure [54]. It is also worth mentioning that this chemical contribution to the thermal expansion has a compensating effect, and the unit cell volumes exhibit a nearly linear behavior over the entire temperature range.…”

Section: Structural Changes In La2−xcaxnio4+δ Under Heating In Airmentioning

confidence: 97%

Correlation between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

et al. 2021

View full text Add to dashboard Cite

This work presents the results from a study of the structure and transport properties of Ca-doped La2NiO4+δ. La2−xCaxNiO4+δ (x = 0–0.4) materials that were synthesized via combustion of organic-nitrate precursors and characterized by X-ray diffraction (XRD), in situ XRD using synchrotron radiation, thermogravimetric analysis (TGA) and isotope exchange of oxygen with C18O2. The structure was defined as orthorhombic (Fmmm) for x = 0 and tetragonal (I4/mmm) for x = 0.1–0.4. Changes that occurred in the unit cell parameters and volume as the temperature changed during heating were shown to be caused by the excess oxygen loss. Typical for Ruddlesden–Popper phases, oxygen mobility and surface reactivity decreased as the Ca content was increased due to a reduction in the over-stoichiometric oxygen content with the exception of x = 0.1. This composition demonstrated its superior oxygen transport properties compared to La2NiO4+δ due to the enhanced oxygen mobility caused by structural features. Electrochemical data obtained showed relatively low polarization resistance for the electrodes with a low Ca content, which correlates well with oxygen transport properties.

show abstract

Section: Structural Changes In La2−xcaxnio4+δ Under Heating In Airmentioning

confidence: 97%

Correlation between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

et al. 2021

View full text Add to dashboard Cite

show abstract

“…One is optimizing the microstructure, including the use of thin-layer electrolytes to reduce the ohmic resistance of the cell or/and the utilization of the nanometric electrode for extending the active reaction area [6,7]. The other is the development of new electrolytes with high ionic conductivity at intermediate temperatures [8] and electrode materials with good catalytic activities [9,10], meeting the demand of intermediate-temperature operations. Compared with the anode material, which normally consists of Ni-based cermet [11], the development of cathode materials is a hot topic in the H-SOFC field [12].…”

Section: Introductionmentioning

confidence: 99%

High-performance proton-conducting solid oxide fuel cells using the first-generation Sr-doped LaMnO3 cathode tailored with Zn ions

et al. 2021

Sci. China Mater.

Self Cite

View full text Add to dashboard Cite

Sr-doped LaMnO 3 (LSM) which is the firstgeneration cathode for solid oxide fuel cells (SOFCs) has been tailored with Zn ions, aiming to achieve improved protonation ability for proton-conducting SOFCs (H-SOFCs). The new Sr and Zn co-doped LaMnO 3 (LSMZ) can be successfully synthesized. The first-principle studies indicate that the LSMZ improves the protonation of LSM and decreases the barriers for oxygen vacancy formation, leading to high performance of the LSMZ cathode-based cells. The proposed LSMZ cell shows the highest fuel cell performance among ever reported LSMbased H-SOFCs. In addition, the superior fuel cell performance does not impair its stability. LSMZ is stable against CO 2 , as demonstrated by both in-situ CO 2 corrosion tests and the first-principles calculations, leading to good long-term stability of the cell. The Zn-doping strategy for the traditional LSM cathode with high performance and good stability brings back the LSM cathode to intermediate temperatures and paves a new way for the research on the LSM-based materials as cathodes for SOFCs.

show abstract

“…New cathodes with mixed conductivity based on simple perovskite (doped LaCoO 3 , BaCoO 3 , and LaFeO 3 ) have been extensively studied [8][9][10][11][12][13]. Considering high oxygen-ion defect concentration, oxygen diffusion anisotropy, and cation ordered-structure, several recent studies have highlighted the promising of the Ruddlesden-Popper (RP) series, A n+1 BnO 3n+1 , for cathode application, where the special sandwich structure consists of n ABO 3 perovskite and two AO rock salt layers [14][15][16][17][18][19].…”

Section: Introduction mentioning

confidence: 99%

New two-layer Ruddlesden—Popper cathode materials for protonic ceramics fuel cells

Ling

Guo

et al. 2021

J Adv Ceram

View full text Add to dashboard Cite

New two-layer Ruddlesden—Popper (RP) oxide La0.25Sr2.75FeNiO7−δ (LSFN) in the combination of Sr3Fe2O7−δ and La3Ni2O7−δ was successfully synthesized and studied as the potential active single-phase and composite cathode for protonic ceramics fuel cells (PCFCs). LSFN with the tetragonal symmetrical structure (I4/mmm) is confirmed, and the co-existence of Fe3+/Fe4+ and Ni3+/Ni2+ couples is demonstrated by X-ray photoelectron spectrometer (XPS) analysis. The LSFN conductivity is apparently enhanced after Ni doping in Fe-site, and nearly three times those of Sr3Fe2O7−δ, which is directly related to the carrier concentration and conductor mechanism. Importantly, anode supported PCFCs using LSFN-BaZr0.1Ce0.7Y0.2O3−δ (LSFN-BZCY) composite cathode achieved high power density (426 mW·cm−2 at 650 °C) and low electrode interface polarization resistance (0.26 Ω·cm2). Besides, distribution of relaxation time (DRT) function technology was further used to analyse the electrode polarization processes. The observed three peaks (P1, P2, and P3) separated by DRT shifted to the high frequency region with the decreasing temperature, suggesting that the charge transfer at the electrode-electrolyte interfaces becomes more difficult at reduced temperatures. Preliminary results demonstrate that new two-layer RP phase LSFN can be a promising cathode candidate for PCFCs.

show abstract

Recent advances in layered Ln₂NiO_4+δ nickelates: fundamentals and prospects of their applications in protonic ceramic fuel and electrolysis cells

Abstract: The review represents a comprehensive and critical analysis of the state-of-the-art knowledge on layered Ruddlesden–Popper nickelates as promising electrodes for protonic ceramic electrochemical cells.

Cited by 166 publications

References 474 publications

Correlation between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

Correlation between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

High-performance proton-conducting solid oxide fuel cells using the first-generation Sr-doped LaMnO3 cathode tailored with Zn ions

New two-layer Ruddlesden—Popper cathode materials for protonic ceramics fuel cells

Contact Info

Product

Resources

About

Recent advances in layered Ln2NiO4+δ nickelates: fundamentals and prospects of their applications in protonic ceramic fuel and electrolysis cells

Abstract: The review represents a comprehensive and critical analysis of the state-of-the-art knowledge on layered Ruddlesden–Popper nickelates as promising electrodes for protonic ceramic electrochemical cells.

Cited by 166 publications

References 474 publications

Correlation between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

Correlation between Structural and Transport Properties of Ca-Doped La Nickelates and Their Electrochemical Performance

High-performance proton-conducting solid oxide fuel cells using the first-generation Sr-doped LaMnO3 cathode tailored with Zn ions

New two-layer Ruddlesden—Popper cathode materials for protonic ceramics fuel cells

Contact Info

Product

Resources

About

Recent advances in layered Ln₂NiO_4+δ nickelates: fundamentals and prospects of their applications in protonic ceramic fuel and electrolysis cells