Effect of manganese oxide on the sinterability of 8 mol% yttria-stabilized zirconia

Chong, Fazheng; Tan, Chou Yong; Singh, Ramesh; Muchtar, Andanastuti; Somalu, Mahendra Rao; Ng, C. K.; Yap, Boon Kar; Teh, Yee Ching; Tan, Yoke Meng

doi:10.1016/j.matchar.2016.09.001

Cited by 7 publications

(9 citation statements)

References 29 publications

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“…The power-law coarsening model was utilized as a controller for particle size and three phase boundary (TPB) density alterations corresponding to aging time and temperature. Chong et al 103 studied the influence of Manganese dopant in 8 mol% YSZ electrolyte in relations of phase stability, microstructures, and mechanical properties. The α-alumina shows high stability of trapped electrons while low stable or labile for a trapped electron in (YSZ).…”

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

“…Suzuki et al 76 utilized the conventional method (slurry dip coating) to fabricate single-grain-thick YSZ electrolyte. Chong et al 103 doped manganese oxide 0.5 to 5 wt.% with 8 mol% YSZ. The dense electrolyte produced 1 μm thickness.…”

Section: Microstructure and Densificationmentioning

confidence: 99%

“…The best atomic percentage of Li was set at 5, which produces duplex microstructure, which means containing small grains with second phase particles in the inner region and large grains with pores in the surface region. Chong et al 103 studied the influence of Manganese dopant in 8 mol% YSZ electrolyte in relations of phase stability, microstructures, and mechanical properties. The particles size has been reduced from 0.54 μm to 0.16 μm after going through the milling process.…”

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

“…The image YSZ does not show any densification progress compared to Li-doped YSZ, which has already started to change densification and grain growth. Chong et al 103 doped manganese oxide 0.5 to 5 wt.% with 8 mol% YSZ. The relative of densification for doped electrolyte significantly improves than undoped electrolyte, which manganese functioned as a solid solution.…”

Section: Microstructure and Densificationmentioning

confidence: 99%

“…Chong et al 103 doped the YSZ with the manganese to enhance the mechanical properties of the electrolyte. At the low sintering temperature, the dissolution of dopant promoted the fusion and bonding of YSZ electrolyte.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

et al. 2019

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Solid Oxide Fuel Cells (SOFCs) are an electrochemical energy converter that receives the world's attention as a power generation system of the future owing to its flexibility to consume various types of fuels, low emission of greenhouses gases, and having high efficiency reaching over 70%. A conventional SOFCs operates at high temperature, typically ranges between 800 to 1000°C. SOFCs use yttria-stabilized zirconia (YSZ) as the electrolyte, which exhibits excellent oxide ion conductivity in this temperature range. However, this temperature range poses an issue to SOFCs durability, as it leads to the degradation of the cell components. In addition, SOFCs application is limited and difficult to implement for the transportation sector and portable appliance. A viable solution is to lower the SOFCs operating temperature to intermediate (600 to 800°C ) or low (<600°C) operating temperature. The benefit of this way, cell durability will improve, as well as other advantages such as facilitates handling, assembling, dismantling, cost reduction, and expanded the SOFCs application. Nonetheless, the key challenge for the issue is finding suitable electrolyte, as YSZ have lower ionic conductivity at low and intermediate temperature range. The aim of this paper is to review the status and challenges in the attempts made to modify YSZ electrolyte within the past decade. The resulting ionic conductivity, microstructure, and densification, mechanical and thermal properties of these 'new' electrolytes critically reviewed. The targeted conductivity of modification of YSZ electrolyte must be exceeded >0.1 S cm -1 to enable high performance of SOFCs power generation systems to be realized for transportation and portable applications. Based on our knowledge, this paper is the first review which focused on the recent status and challenges of YSZ electrolyte towards lowering the operating temperature.

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Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

Section: Microstructure and Densificationmentioning

confidence: 99%

Section: Progress Work From 2015 To 2017 On Ysz Electrolytementioning

confidence: 99%

Section: Microstructure and Densificationmentioning

confidence: 99%

Section: Mechanical Propertiesmentioning

confidence: 99%

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A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

et al. 2019

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Influence of the Addition of Ni‐Coated Carbon Nanotubes on the Mechanical Properties of Highly Porous Zirconia Cellular Structures

et al. 2021

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Herein, the effect of the addition of Ni‐coated carbon nanotubes (CNTs) on the microstructure, mechanical properties, and morphology of zirconia porous cellular structures is studied, aiming to increase their mechanical strength. Highly porous structures of monolithic zirconia (ZrO2) and zirconia reinforced with Ni‐doped CNTs (ZrO2 + CNT/Ni) are fabricated through the replica method. Scanning electron microscopy and micro‐computed tomography (microCT) analyses show that ZrO2 + CNT/Ni specimens present lower overall porosity (88.0%) than monolithic ZrO2 (93.8%), indicating improved sintering kinetics. Compressive tests for the ZrO2 + CNT/Ni samples result in a compressive strength of 0.82 ± 0.10 MPa, a threefold value of that of the monolithic sample (0.25 ± 0.07 MPa). The ZrO2 + CNT/Ni samples also present a higher elastic modulus (41.02 ± 4.94 MPa) than the ZrO2 ones (21.92 ± 5.40 MPa). Thus, the addition of Ni‐coated CNTs significantly improves the strength of highly porous zirconia cellular structures.

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Ball milling assisted preparation of nano La–Y/ZrO2 powder ternary oxide system: Influence of doping amounts

Zhang

Huang

et al. 2023

Ceramics International

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Effect of manganese oxide on the sinterability of 8 mol% yttria-stabilized zirconia

Cited by 7 publications

References 29 publications

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation

Influence of the Addition of Ni‐Coated Carbon Nanotubes on the Mechanical Properties of Highly Porous Zirconia Cellular Structures

Ball milling assisted preparation of nano La–Y/ZrO2 powder ternary oxide system: Influence of doping amounts

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