Role of initial microstructure on nickel-YSZ cathode degradation in solid oxide electrolysis cells

Keane, Michael; Fan, Hui; Han, Min−Koo; Singh, Prabhakar

doi:10.1016/j.ijhydene.2014.09.057

Cited by 42 publications

(21 citation statements)

References 35 publications

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“…The limited performance of LSCM electrode also facilitates the impurities transport. And the current efficiencies with this new composite Fe/FeV 2 O 4 cathode are comparable to those of the state‐of‐art Ni–YSZ cathodes under similar conditions …”

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confidence: 53%

Redox‐Reversible Iron Orthovanadate Cathode for Solid Oxide Steam Electrolyzer

Gan

Ruan

et al. 2015

Advanced Science

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A redox‐reversible iron orthovanadate cathode is demonstrated for a solid oxide electrolyser with up to 100% current efficiency for steam electrolysis. The iron catalyst is grown on spinel‐type electronic conductor FeV2O4 by in situ tailoring the reversible phase change of FeVO4 to Fe+FeV2O4 in a reducing atmosphere. Promising electrode performances have been obtained for a solid oxide steam electrolyser based on this composite cathode.

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confidence: 53%

Redox‐Reversible Iron Orthovanadate Cathode for Solid Oxide Steam Electrolyzer

Gan

Ruan

et al. 2015

Advanced Science

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“…Ni agglomeration significantly decreases the length of TPBs and the specific surface areas of Ni/gas, and finally contributes to about 20–25% of the total degradation in SOEC at 850 °C after 1000–2000 h of operation. Meanwhile, Ni agglomeration in Ni–YSZ cathode reduces the effective contact areas between Ni and current collector, leading to the increase of the ohmic resistance . Ni depletion (Figure B) mainly occurs in steam electrolysis.…”

Section: Degradationmentioning

confidence: 99%

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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“…Based on the above results, it can be inferred that although Ni-cermets exhibit an excellent catalytic activity for CO 2 /H 2 O coelectrolysis, they tend to suffer from some drawbacks of impurity poisoning, oxidation, particle aggregation and coke deposition, etc. [25,47,53,54,[56][57][58][59][60][61] . The phenomenon would result in the cell performance degradation to some extent.…”

Section: Ni-cermet Cathodementioning

confidence: 99%

Co-electrolysis of CO2 and H2O in high-temperature solid oxide electrolysis cells: Recent advance in cathodes

Zhang

Song

Wang

et al. 2017

Journal of Energy Chemistry

142

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Role of initial microstructure on nickel-YSZ cathode degradation in solid oxide electrolysis cells

Cited by 42 publications

References 35 publications

Redox‐Reversible Iron Orthovanadate Cathode for Solid Oxide Steam Electrolyzer

Redox‐Reversible Iron Orthovanadate Cathode for Solid Oxide Steam Electrolyzer

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

Co-electrolysis of CO2 and H2O in high-temperature solid oxide electrolysis cells: Recent advance in cathodes

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Role of initial microstructure on nickel-YSZ cathode degradation in solid oxide electrolysis cells

Cited by 42 publications

References 35 publications

Redox‐Reversible Iron Orthovanadate Cathode for Solid Oxide Steam Electrolyzer

Redox‐Reversible Iron Orthovanadate Cathode for Solid Oxide Steam Electrolyzer

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

Co-electrolysis of CO2 and H2O in high-temperature solid oxide electrolysis cells: Recent advance in cathodes

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