Electroless deposition of Co(Mn)/Pd-decorator into Y2O3-stabilized ZrO2 scaffold as cathodes for solid oxide fuel cells

Liang, Fengli; Wang, Zaixing; Sunarso, Jaka; Mao, Junkui; Zhou, Wei

doi:10.1016/j.ijhydene.2017.11.084

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…However, it is not true that the higher the stabilizer content, the better the stability of t‐zirconium dioxide. This is due to various environmental factors, and with the rise in dopant stabilizer, dopant ions may easily bias at the interface 45,46 . In zirconia crystals stabilized by Nd 3+ doping, in order to compensate for the charge imbalance near the core of the grain boundary caused by cation segregation at the interface, vacancies were enriched from the core of the crystal to the interface with low symmetry 47 .…”

Section: Resultsmentioning

confidence: 99%

“…This is due to various environmental factors, and with the rise in dopant stabilizer, dopant ions may easily bias at the interface. 45,46 In zirconia crystals stabilized by Nd 3+ doping, in order to compensate for the charge imbalance near the core of the grain boundary caused by cation segregation at the interface, vacancies were enriched from the core of the crystal to the interface with low symmetry. 47 This resulted in the complex annihilation of vacancies and dopant ions at the interface, thereby leading to the reduction of interfacial vacancies and further promoting the diffusion of intracrystalline vacancies to the grain boundaries.…”

Section: Vickers Hardness and Density Analysesmentioning

confidence: 99%

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Zirconia/garnet multiphase ceramics with high immobilization capacity for Nd confers better physical and chemical stability

Ge,

Xu,

Liao

et al. 2023

J Am Ceram Soc.

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Multiphase ceramics have a high application potential in the field of nuclear waste immobilization because of the efficient synergy between the individual phases. In this work, zirconia/garnet multiphase ceramics with high efficient and effective immobilization capacity of trivalent actinides were successfully prepared using conventional solid‐phase sintering. ZrO2 doping increases the lattice site available for nuclide substitution and advance the immobilization capacity of the ceramic substrate for nuclide. At the same time, the phase change of zirconia is used to tougher and improve the physical properties of the ceramic waste form. The feasibility of using multiphase ceramics for the efficient immobilization of trivalent actinides was assessed by studying the phase evolution, microstructure, Vickers hardness, and chemical stability of the multi‐phase ceramics. Zr1‐xNdxO2‐x/2/Ca3‐yNdyZr3‐yFey‐1Fe3O12 multiphase ceramics exhibited superior physical or chemical properties compared to most of the multiphase ceramics as well as the previously prepared single‐phase calcium garnet ceramic waste forms. The Vickers hardness of all the multiphase ceramic samples ranged between 685 and 730 HV0.5. Under the condition of using simulate Bei Shan groundwater as leaching agent, the normalized leaching rates of Nd is approximately 10−6 g·m−2·day−1, showing good chemical stability and achieving efficient and effective immobilization of trivalent actinides. The excellent chemical, as well as physical properties of Zr1‐xNdxO2‐x/2/Ca3‐yNdyZr3‐yFey‐1Fe3O12 multiphase ceramics are expected to make them one of the substrates for more efficient and effective immobilizing of trivalent actinides.

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Section: Resultsmentioning

confidence: 99%

Section: Vickers Hardness and Density Analysesmentioning

confidence: 99%

Zirconia/garnet multiphase ceramics with high immobilization capacity for Nd confers better physical and chemical stability

Ge,

Xu,

Liao

et al. 2023

J Am Ceram Soc.

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show abstract

“…21 The great size of the Pd phase is most likely due to the high tendency of agglomeration and grain growth of Pd at the high operating temperature of SOCs. 66,67 The deposition layer has a nominal composition of Sm 0.53 Er 0.51 Y 0.06 Bi 0.44 Zr 0.46 O 3+d (spectrum of spot 2, Fig. 8b), which may belong to a (Bi,Zr) 2 O 3+d solid solution co-doped with Sm and Er.…”

Section: Microstructure and Cation Interdiffusion At The Interfacementioning

confidence: 99%

High performance nanostructured bismuth oxide–cobaltite as a durable oxygen electrode for reversible solid oxide cells

Chen

et al. 2018

J. Mater. Chem. A

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Performance and durability of an anode-supported solid oxide fuel cell with a PdO/ZrO2 engineered (La0.8Sr0.2)0.95MnO3-δ-(Y2O3)0.08(ZrO2)0.92 composite cathode

Wang

Qiu

et al. 2018

International Journal of Hydrogen Energy

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Electroless deposition of Co(Mn)/Pd-decorator into Y2O3-stabilized ZrO2 scaffold as cathodes for solid oxide fuel cells

Cited by 5 publications

References 33 publications

Zirconia/garnet multiphase ceramics with high immobilization capacity for Nd confers better physical and chemical stability

Zirconia/garnet multiphase ceramics with high immobilization capacity for Nd confers better physical and chemical stability

High performance nanostructured bismuth oxide–cobaltite as a durable oxygen electrode for reversible solid oxide cells

Performance and durability of an anode-supported solid oxide fuel cell with a PdO/ZrO2 engineered (La0.8Sr0.2)0.95MnO3-δ-(Y2O3)0.08(ZrO2)0.92 composite cathode

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