Improved stability of reversible solid oxide cells with a nickelate-based oxygen electrode

Laguna‐Bercero, M. A.; Monzón, Hernán; Larrea, Á.; Orera, V. M.

doi:10.1039/c5ta08531d

Cited by 91 publications

(47 citation statements)

References 49 publications

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“…Figure a shows the I–V curves of the best‐performing cell recorded at different temperatures. The electrolysis current densities at 1.3 V decreased to 0.32 A cm −2 and 0.16 A cm −2 at 650 and 600 °C, respectively, which are higher than recently reported IT‐SOECs (0.26 A cm −2 at 650 °C, 0.05A cm −2 at 600 °C). Impedance measurement was carried out (Figure S6, Supporting Information).…”

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confidence: 65%

“…Figure 2a shows the polarization curves. The cell co-fired at 1350 C indicates the best electrolysis performance followed by the cells co-fired at 1400, 1300, and 1450 C. The current density reached as high as 0.86 A cm À2 at 1.3 V. As summarized in Figure 2d and Table S1, Supporting Information, our cell shows better performance than recently reported SOECs operated at 700 C. [16][17][18][19][20][21] All the cells can switch between SOEC and SOFC modes. The open-circuit voltages (OCVs) of all the cells were around 0.85 V at 700 C, which are higher than traditional SDC cell with Ni-SDC as hydrogen electrode (0.75 V at 700 C [22] ).…”

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confidence: 66%

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Interface‐Engineered Intermediate Temperature Solid Oxide Electrolysis Cell

Luo

Qian

et al. 2019

Energy Tech

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Ceria oxide is one of the most promising ionic conducting oxide electrolytes for intermediate temperature solid oxide electrolysis cells (IT‐SOECs). However, its strong tendency of reducing Ce4+ to Ce3+ leads to severe performance degradation. Herein, an attractive interface engineering approach to construct a micrometer‐thin Ba‐rich oxide layer that inhibits electron shuttling within ceria reduction is reported. Ba cations are first intentionally doped into the fuel electrode as NiO‐BaZr0.1Ce0.7Y0.2O3−δ (NiO‐BZCY) and then diffuse to the interface between NiO‐BZCY and Sm0.2Ce0.8O2−δ (SDC) via a one‐step co‐sintering process. The corresponding electrolyzer delivers a current density of 0.86 A cm−2 at 1.3 V, placing it as one of the best‐performing IT‐SOECs. The cell can reversibly and stably switch between electrolysis and fuel cell modes.

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confidence: 65%

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confidence: 66%

Interface‐Engineered Intermediate Temperature Solid Oxide Electrolysis Cell

Luo

Qian

et al. 2019

Energy Tech

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“…Figure b and Table S1 show the electrolysis performance data of this work and other reports . The performance of the present work (1.31 A cm −2 ) is higher than that of the nanostructured Sr 2 Fe 1.5 Mo 0.5 O 6‐ δ ‐YSZ and LSM‐YSZ electrode based single cell (1.12 A cm −2 ) under the same steam feeding condition .…”

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confidence: 48%

Achieving High Efficiency and Eliminating Degradation in Solid Oxide Electrochemical Cells Using High Oxygen‐Capacity Perovskite

et al. 2016

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Recently,t here have been efforts to use clean and renewable energy because of finite fossil fuels and environmental problems.O wing to the site-specific and weatherdependent characteristics of the renewable energy supply,solid oxide electrolysis cells (SOECs) have received considerable attention to store energy as hydrogen. Conventional SOECs use Ni-YSZ (yttria-stabilized zirconia) and LSM (strontiumdoped lanthanum manganites)-YSZ as electrodes.T hese electrodes,however,suffer from redox-instability and coarsening of the Ni electrode along with delamination of the LSM electrode during steam electrolysis.I nt his study,w es uccessfully design and fabricate highly efficient SOECs using layered perovskites,P rBaMn 2 O 5+d (PBM) and PrBa 0.5 Sr 0.5 Co 1.5 Fe 0.5 O 5+d (PBSCF50), as both electrodes for the first time.The SOEC with layered perovskites as both-side electrodes shows outstanding performance,r eversible cycling, and remarkable stability over 600 hours.Supportinginformation for this article can be found under: http://dx.

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“…For La 2 NiO 4+ δ anode, evident degradation is observed after operating at 500 mA cm −2 and 750 °C for 48 h with the formation of La 3 Ni 2 O 7 and La 4 Ni 3 O 10 phases. While for Pr 2 NiO 4+ d anode, partial decomposition of the Pr 2 NiO 4+ d phase into PrNiO 3 and PrO 2‐ y causes oscillation in current density but does not depress the electrochemical performance of SOEC. And the generation of praseodymium–cerium–gadolinium oxides due to the interaction between Pr 2 NiO 4+ d and GDC probably contributes to the excellent electrochemical performance and stability of the SOEC.…”

Section: Anodementioning

confidence: 98%

High‐Temperature CO₂ Electrolysis in Solid Oxide Electrolysis Cells: Developments, Challenges, and Prospects

et al. 2019

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which has caused serious global warming. According to Intergovernmental Panel on Climate Change, global warming of 1.5 °C above preindustrial levels will come true by 2055 and bring about severe environmental and ecological issues, [2] such as ocean acidification, sea level rise, and species extinction. Therefore, it is urgently needed to reduce the atmospheric CO 2 concentration. [3] Apart from utilizing renewable energy resources to substitute for fossil fuels, CO 2 capture and storage (CCS) processes, and CO 2 capture and utilization (CCU) processes have been developed to effectively diminish the existing atmospheric CO 2 concentration. [4] The CCS processes are often expensive and laborious, and face the risk of CO 2 leakage, while the CCU processes are able to convert the captured CO 2 to value-added carbon-containing chemicals powered by external energy and has attracted more and more research interests recently. However, the conversion of CO 2 to target products is relatively difficult due to its extremely stable CO bonds. Several approaches for CO 2 conversion have been developed, such as photosynthesis, thermocatalytic reduction, electrochemical reduction, and photochemical conversion. Compared with other approaches, electrochemical reduction is more attractive because of two reasons: 1) electrochemical reduction process is controllable through adjusting the applied voltage and reaction temperature, and 2) the process can utilize renewable energy resources such as wind, solar, hydroelectric, and geothermal energies to electrochemically convert CO 2 to useful chemicals, which forms a carbon-neutral energy cycle and simultaneously provides an efficient storage method for renewable energy resources.Several types of electrolysis cell have been systematically investigated for CO 2 electroreduction as listed in Table 1. The first type operates in H-shaped electrochemical cells with liquid electrolyte at low temperatures (<100 °C).[5] Gaseous CO 2 reactant is dissolved into the liquid electrolyte and transported to the electrode surface, which is subsequently electroreduced to CO, HCOOH, CH 4 , C 2 H 4 , C 2 H 5 OH, and so on. [1,6] Although high Faradaic efficiency of products from CO 2 electroreduction has been achieved by exploring efficient catalysts recently, the current density of CO 2 electrolysis is relatively low due to the low CO 2 solubility and the competitive High-temperature CO 2 electrolysis in solid-oxide electrolysis cells (SOECs) could greatly assist in the reduction of CO 2 emissions by electrochemically converting CO 2 to valuable fuels through effective electrothermal activation of the stable CO bond. If powered by renewable energy resources, it could also provide an advanced energy-storage method for their intermittent output. Compared to low-temperature electrochemical CO 2 reduction, CO 2 electrolysis in SOECs at high temperature exhibits higher current density and energy efficiency and has thus attracted much recent attention. The history of its development and its fundamental mech...

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Improved stability of reversible solid oxide cells with a nickelate-based oxygen electrode

Abstract: Mixed praseodymium, cerium and gadolinium oxides (PCGO) at the electrolyte–oxygen electrode interface enhance the stability and performance of nickelate based oxygen electrodes in high temperature electrolysis and fuel cell operation modes.

Cited by 91 publications

References 49 publications

Interface‐Engineered Intermediate Temperature Solid Oxide Electrolysis Cell

Interface‐Engineered Intermediate Temperature Solid Oxide Electrolysis Cell

Achieving High Efficiency and Eliminating Degradation in Solid Oxide Electrochemical Cells Using High Oxygen‐Capacity Perovskite

High‐Temperature CO₂ Electrolysis in Solid Oxide Electrolysis Cells: Developments, Challenges, and Prospects

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Improved stability of reversible solid oxide cells with a nickelate-based oxygen electrode

Abstract: Mixed praseodymium, cerium and gadolinium oxides (PCGO) at the electrolyte–oxygen electrode interface enhance the stability and performance of nickelate based oxygen electrodes in high temperature electrolysis and fuel cell operation modes.

Cited by 91 publications

References 49 publications

Interface‐Engineered Intermediate Temperature Solid Oxide Electrolysis Cell

Interface‐Engineered Intermediate Temperature Solid Oxide Electrolysis Cell

Achieving High Efficiency and Eliminating Degradation in Solid Oxide Electrochemical Cells Using High Oxygen‐Capacity Perovskite

High‐Temperature CO2 Electrolysis in Solid Oxide Electrolysis Cells: Developments, Challenges, and Prospects

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High‐Temperature CO₂ Electrolysis in Solid Oxide Electrolysis Cells: Developments, Challenges, and Prospects