Barium-doped nickelates Nd2–xBaxNiO4+δ as promising electrode materials for protonic ceramic electrochemical cells

Tarutin, Artem P.; Gorshkov, M. Yu.; Bainov, I.N.; Vdovin, G. K.; Вылков, А. И.; Lyagaeva, Julia G.; Medvedev, Dmitry

doi:10.1016/j.ceramint.2020.06.217

Cited by 40 publications

(13 citation statements)

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“…From electrocatalysts [ 120 ] and MIEC membranes [ 121 ] to SOFCs [ 122 ], PCFCs, and PCECs [ 123 ], every branch of energy application sciences requires novel and highly effective materials for creation of advanced devices and technologies. The active growth of investigation of cathode materials with layered perovskite structure [ 46 , 47 , 48 , 49 , 50 ] makes the task of creating electrochemical sources with the same type of structure of electrolyte more relevant. Sure enough, proton-conducting layered perovskites must take a significant place in the roadmap of future inorganic materials science.…”

Section: Discussionmentioning

confidence: 99%

“…For the last 30 years, different compositions with K 2 NiF 4 or related structures were described as superconductors [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ], giant and colossal magnetoresistors [ 27 , 28 , 29 , 30 ], microwave dielectrics [ 31 , 32 , 33 , 34 , 35 ], phosphors [ 36 , 37 , 38 , 39 ], mixed ionic and electronic conductors (MIEC) [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ], dielectrics [ 51 , 52 , 53 , 54 , 55 ], magnetic materials [ 56 , 57 , 58 ], thermoelectrics [ 59 , 60 , 61 , 62 ], photocatalysts for hydrogen production [ 63 , 64 , 65 ], oxygen-ionic conductors [ 66 , 67 ,…”

Section: Structure Of Layered Perovskite-related Materialsmentioning

confidence: 99%

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Materials AIILnInO4 with Ruddlesden-Popper Structure for Electrochemical Applications: Relationship between Ion (Oxygen-Ion, Proton) Conductivity, Water Uptake, and Structural Changes

Tarasova

Анимица

2021

Materials

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In this paper, the review of the new class of ionic conductors was made. For the last several years, the layered perovskites with Ruddlesden-Popper structure AIILnInO4 attracted attention from the point of view of possibility of the realization of ionic transport. The materials based on Ba(Sr)La(Nd)InO4 and the various doped compositions were investigated as oxygen-ion and proton conductors. It was found that doped and undoped layered perovskites BaNdInO4, SrLaInO4, and BaLaInO4 demonstrate mixed hole-ionic nature of conductivity in dry air. Acceptor and donor doping leads to a significant increase (up to ~1.5–2 orders of magnitude) of conductivity. One of the most conductive compositions BaNd0.9Ca0.1InO3.95 demonstrates the conductivity value of 5∙10−4 S/cm at 500 °C under dry air. The proton conductivity is realized under humid air at low (<500 °C) temperatures. The highest values of proton conductivity are attributed to the compositions BaNd0.9Ca0.1InO3.95 and Ba1.1La0.9InO3.95 (7.6∙10−6 and 3.2∙10−6 S/cm correspondingly at the 350 °C under wet air). The proton concentration is not correlated with the concentration of oxygen defects in the structure and it increases with an increase in the unit cell volume. The highest proton conductivity (with 95−98% of proton transport below 400 °C) for the materials based on BaLaInO4 was demonstrated by the compositions with dopant content no more that 0.1 mol. The layered perovskites AIILnInO4 are novel and prospective class of functional materials which can be used in the different electrochemical devices in the near future.

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Section: Discussionmentioning

confidence: 99%

Section: Structure Of Layered Perovskite-related Materialsmentioning

confidence: 99%

Materials AIILnInO4 with Ruddlesden-Popper Structure for Electrochemical Applications: Relationship between Ion (Oxygen-Ion, Proton) Conductivity, Water Uptake, and Structural Changes

Tarasova

Анимица

2021

Materials

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“…The film obtained on the LBNO ss substrate, according to the impedance spectroscopy data, possessed the highest electrical conductivity among the films deposited on the various cathode substrates, amounting 1.6 mS/cm at 600 • C. This value is lower than that for the compact BCGCuO sample (6.2 mS/cm) [16]; however, it is higher than that derived from the impedance spectroscopy data for the BCGCuO electrolyte deposited on the anode substrate (1.1 mS/cm) [7]. Electrolyte conductivity in the cell with the supporting cathode substrate can be increased via activation of the thick cathode's performance, used for the functional sublayer Ba-containing cathode materials with a higher level of MIEC conductivity [36] and/or by the introduction of electrochemically active additives in the porous cathode substrate structure [37], as well as by applying the electrochemically active anodes [38]. According to the XRD data ( Figure S6), the orthorhombic structure (sp.…”

Section: Electrical Properties Of the Electrolyte Bcgcuo Film Formed mentioning

confidence: 80%

Features of Electrophoretic Deposition of a Ba-Containing Thin-Film Proton-Conducting Electrolyte on a Porous Cathode Substrate

et al. 2020

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This paper presents the study of electrophoretic deposition (EPD) of a proton-conducting electrolyte of BaCe0.89Gd0.1Cu0.01O3-δ (BCGCuO) on porous cathode substrates of LaNi0.6Fe0.4O3−δ (LNFO) and La1.7Ba0.3NiO4+δ (LBNO). EPD kinetics was studied in the process of deposition of both a LBNO sublayer on the porous LNFO substrate and a BCGCuO electrolyte layer. Addition of iodine was shown to significantly increase the deposited film weight and decrease the number of EPD cycles. During the deposition on the LNFO cathode, Ba preservation in the electrolyte layer after sintering at 1450 °C was achieved only with a film thickness greater than 20 μm. The presence of a thin LBNO sublayer (10 μm) did not have a pronounced effect on the preservation of Ba in the electrolyte layer. When using the bulk LBNO cathode substrate as a Ba source, Ba was retained in a nominal amount in the BCGCuO film with a thickness of 10 μm. The film obtained on the bulk LBNO substrate, being in composition close to the nominal composition of the BCGCuO electrolyte, possessed the highest electrical conductivity among the films deposited on the various cathode substrates. The technology developed is a base step in the adaptation of the EPD method for fabrication of cathode-supported Solid Oxide Fuel Cells (SOFCs) with dense barium-containing electrolyte films while maintaining their nominal composition and functional characteristics.

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“…In electrolysis mode, a Pr 1.95 Ba 0.05 NiO 4+δ oxygen electrode was reported to provide an excellent hydrogen production rate of 19 mL•min −1 at 600 • C on a tubular BaCe 0.5 Zr 0.3 Dy 0.2 O 3−δ electrolyte [83]. Ba-doping in the nickelate series Nd 2-x Ba x NiO 4+δ is documented to reduce diffusion of Ba from the electrolyte to the electrode [84], whereas anion doping with F in the series Nd 1.9 Ba 0.1 NiO 4+δ F γ improves the electrochemical performance in electrolysis mode [85]. A single cell with La 1.2 Sr 0.8 Ni 0.6 Fe 0.4 O 4+δ (LSNF) cathode based on a BCZY71 electrolyte achieved a maximum power density of 0.781 W•cm −2 with a low interfacial polarisation resistance of 0.078 Ω•cm 2 at 700 • C, demonstrating high long-term stability [86].…”

Section: Triple Proton Oxide Ion Electron Hole-conducting Oxidesmentioning

confidence: 99%

Perspectives on Cathodes for Protonic Ceramic Fuel Cells

et al. 2021

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Protonic ceramic fuel cells (PCFCs) are promising electrochemical devices for the efficient and clean conversion of hydrogen and low hydrocarbons into electrical energy. Their intermediate operation temperature (500–800 °C) proffers advantages in terms of greater component compatibility, unnecessity of expensive noble metals for the electrocatalyst, and no dilution of the fuel electrode due to water formation. Nevertheless, the lower operating temperature, in comparison to classic solid oxide fuel cells, places significant demands on the cathode as the reaction kinetics are slower than those related to fuel oxidation in the anode or ion migration in the electrolyte. Cathode design and composition are therefore of crucial importance for the cell performance at low temperature. The different approaches that have been adopted for cathode materials research can be broadly classified into the categories of protonic–electronic conductors, oxide-ionic–electronic conductors, triple-conducting oxides, and composite electrodes composed of oxides from two of the other categories. Here, we review the relatively short history of PCFC cathode research, discussing trends, highlights, and recent progress. Current understanding of reaction mechanisms is also discussed.

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Barium-doped nickelates Nd2–xBaxNiO4+δ as promising electrode materials for protonic ceramic electrochemical cells

Cited by 40 publications

References 66 publications

Materials AIILnInO4 with Ruddlesden-Popper Structure for Electrochemical Applications: Relationship between Ion (Oxygen-Ion, Proton) Conductivity, Water Uptake, and Structural Changes

Materials AIILnInO4 with Ruddlesden-Popper Structure for Electrochemical Applications: Relationship between Ion (Oxygen-Ion, Proton) Conductivity, Water Uptake, and Structural Changes

Features of Electrophoretic Deposition of a Ba-Containing Thin-Film Proton-Conducting Electrolyte on a Porous Cathode Substrate

Perspectives on Cathodes for Protonic Ceramic Fuel Cells

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