Ionic conductivity

Engineering

Oxide

Metallurgy

Materials science

Ceramic

Fuel cells

Operating temperature

Solid oxide fuel cell

Durability

Chemical engineering

Physical chemistry

Nanotechnology

Yttria-stabilized zirconia

Conductivity

Composite material

Chemistry

Electrode

Anode

Cubic zirconia

Electrolyte

Fast ion conductor

Electrical engineering

International Journal of Energy Research

International Journal of Energy ResearchVolume 44, Issue 2 p. 631-650 REVIEW PAPER A review on recent status and challenges of yttria stabilized zirconia modification to lowering the temperature of solid oxide fuel cells operation Zulfirdaus Zakaria, Corresponding Author Zulfirdaus Zakaria zulfirdauszakaria@gmail.com orcid.org/0000-0003-3292-8009 Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, Kajang, Selangor, Malaysia Fuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Correspondence Zulfirdaus Zakaria, Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, 43000 Kajang, Selangor, Malaysia. Email: zulfirdauszakaria@gmail.com Norazuwana Shaari, Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia. Email: norazuwanashaari@ukm.edu.mySearch for more papers by this authorSaiful Hasmady Abu Hassan, Saiful Hasmady Abu Hassan Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, Kajang, Selangor, MalaysiaSearch for more papers by this authorNorazuwana Shaari, Corresponding Author Norazuwana Shaari norazuwanashaari@ukm.edu.my orcid.org/0000-0002-6900-9973 Fuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Correspondence Zulfirdaus Zakaria, Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, 43000 Kajang, Selangor, Malaysia. Email: zulfirdauszakaria@gmail.com Norazuwana Shaari, Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia. Email: norazuwanashaari@ukm.edu.mySearch for more papers by this authorAhmad Zubair Yahaya, Ahmad Zubair Yahaya Fuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, MalaysiaSearch for more papers by this authorYap Boon Kar, Yap Boon Kar Department of Electronics and Communication Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, Kajang, Selangor, MalaysiaSearch for more papers by this author Zulfirdaus Zakaria, Corresponding Author Zulfirdaus Zakaria zulfirdauszakaria@gmail.com orcid.org/0000-0003-3292-8009 Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, Kajang, Selangor, Malaysia Fuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Correspondence Zulfirdaus Zakaria, Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, 43000 Kajang, Selangor, Malaysia. Email: zulfirdauszakaria@gmail.com Norazuwana Shaari, Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia. Email: norazuwanashaari@ukm.edu.mySearch for more papers by this authorSaiful Hasmady Abu Hassan, Saiful Hasmady Abu Hassan Department of Mechanical Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, Kajang, Selangor, MalaysiaSearch for more papers by this authorNorazuwana Shaari, Corresponding Author Norazuwana Shaari norazuwanashaari@ukm.edu.my orcid.org/0000-0002-6900-9973 Fuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia Correspondence Zulfirdaus Zakaria, Institute of Sustainable Energy, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, 43000 Kajang, Selangor, Malaysia. Email: zulfirdauszakaria@gmail.com Norazuwana Shaari, Fuel Cell Institute, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia. Email: norazuwanashaari@ukm.edu.mySearch for more papers by this authorAhmad Zubair Yahaya, Ahmad Zubair Yahaya Fuel Cell Institute, Universiti Kebangsaan Malaysia, Bangi, Selangor, MalaysiaSearch for more papers by this authorYap Boon Kar, Yap Boon Kar Department of Electronics and Communication Engineering, College of Engineering, Universiti Tenaga Nasional, Jalan IKRAM–UNITEN, Kajang, Selangor, MalaysiaSearch for more papers by this author First published: 27 October 2019 https://doi.org/10.1002/er.4944Citations: 44Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Summary 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. Citing Literature Volume44, Issue2February 2020Pages 631-650 RelatedInformation

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