Ceramist最新文献_第6页

Recent Progress of Cathode Materials for Na-ion batteries 钠离子电池正极材料研究进展

Ceramist Pub Date : 2022-03-31 DOI: 10.31613/ceramist.2022.25.1.04

Wonseok Ko, Bonyoung Koo, Hyunyoung Park, Jungmin Kang, Jongsoon Kim

引用次数: 0

Flash Light Sintered Lanthanum Strontium Cobalt Ferrite(LSCF) Electrode for High Performance IT-SOFCs 用于高性能it - sofc的闪光灯烧结镧锶钴铁氧体(LSCF)电极

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.07

Junghum Park, Hojae Lee, Yonghyun Lim, Ji-Eon Yoon, Miju Ku, Young‐Beom Kim

{"title":"Flash Light Sintered Lanthanum Strontium Cobalt Ferrite(LSCF) Electrode for High Performance IT-SOFCs","authors":"Junghum Park, Hojae Lee, Yonghyun Lim, Ji-Eon Yoon, Miju Ku, Young‐Beom Kim","doi":"10.31613/ceramist.2021.24.4.07","DOIUrl":"https://doi.org/10.31613/ceramist.2021.24.4.07","url":null,"abstract":"The high temperature(900oC~) thermal sintering process is necessary to fabricate the Solid oxide fuel cells(SOFCs). However, the chemical reaction has occurred between solid oxide material components, electrode and electrolyte. In the case of lanthanum strontium cobalt ferrite (La0.6Sr0.4Co0.2Fe0.8O3-δ, LSCF) electrode, the SrZrO3(SZO) secondary phase is produced at the electrolyte interface even when using the gadolinium doped ceria(GDC) buffer layer for blocking the strontium and zirconium diffusion. The SZO layer hinders the oxygen ion transfer and deteriorates fuel cell performance. By using a novel flash light sintering(FLS) method, we have successfully solved the problem of secondary phase formation in the conventional high temperature thermal sintering process. The microstructure and thickness of the LSCF electrode are analyzed using a field emission scanning electron microscope(FE-SEM). The strontium diffusion and secondary phase are confirmed by X-ray diffraction (XRD), energy dispersive spectrometer method of SEM, TEM (SEM-, TEM-EDS). The NiO-YSZ anode supported LSCF cathode cells are adopted for electro chemical analysis which is measured at 750oC. The maximum power density of the thermal sintered LSCF cathode at 1050oC is 699.6mW/cm2, while that of the flash light sintered LSCF cathode is 711.6mW/cm2. This result proves that the electrode was successfully sintered without a secondary phase using flash light sintering.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88369871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Ammonia Fueled Solid Oxide Fuel Cells 氨燃料固体氧化物燃料电池的研究进展

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.08

Jong-Eun Hong, Seung-Bok Lee, D. Joh, Hyegyoung Kim, Tak-Hyoung Lim, S. Park, R. Song

{"title":"Development of Ammonia Fueled Solid Oxide Fuel Cells","authors":"Jong-Eun Hong, Seung-Bok Lee, D. Joh, Hyegyoung Kim, Tak-Hyoung Lim, S. Park, R. Song","doi":"10.31613/ceramist.2021.24.4.08","DOIUrl":"https://doi.org/10.31613/ceramist.2021.24.4.08","url":null,"abstract":"Solid oxide fuel cells (SOFCs) can generate electricity through an electrochemical conversion of the chemical energy of fuels including hydrogen, hydrocarbons, and biogas because of high operation temperatures. Ammonia has recently been considered as a promising hydrogen carrier that is relatively convenient to store and transport and can be decomposed into hydrogen and nitrogen with no carbon emission via catalytic cracking. Thus, much effort has been made to utilize ammonia as a clean fuel to SOFCs for power generation at high efficiency. This review is aiming at delivering the current progress of developing high temperature ceramic fuel cells fed with ammonia, particularly more focused on the achievements of a direct ammonia fueled SOFC (DA-SOFC) to shed light on the challenges of degrading the performance and durability. The problems are primarily attributed to a lack of rational catalysts, thermal imbalance, and the evolution of nitrides on the components including the Ni based anode, Ni mesh as current collector, and stainless steels of metallic interconnect that are exposed to the ammonia fuel environment incurring microstructural deformations and electrical and electrochemical deteriorations. Lastly, strategic pathways to overcome the inadequate performance and the instability are suggested to accomplish a commercialization of DA-SOFCs.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75938847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Review of Electrochemical Cells with Geometrically Well-defined Interfaces for Solid Oxide Fuel Cell Anodes 固体氧化物燃料电池阳极具有几何定义界面的电化学电池研究进展

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.01

Yoonseok Choi

引用次数: 0

Recent Advances in High Temperature Electrolysis Cells using LaGaO3-based Electrolyte lagao3基电解液高温电解电池研究进展

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.06

Seokhee Lee, Sang Won Lee, Suji Kim, T. Shin

{"title":"Recent Advances in High Temperature Electrolysis Cells using LaGaO3-based Electrolyte","authors":"Seokhee Lee, Sang Won Lee, Suji Kim, T. Shin","doi":"10.31613/ceramist.2021.24.4.06","DOIUrl":"https://doi.org/10.31613/ceramist.2021.24.4.06","url":null,"abstract":"High temperature electrolysis is a promising option for carbon-free hydrogen production and huge energy storage with high energy conversion efficiencies from renewable and nuclear resources. Over the past few decades, yttria-stabilized zirconia (YSZ) based ion conductor has been widely used as a solid electrolyte in solid oxide electrolysis cells (SOECs). However, its high operation temperature and lower conductivity in the appropriate temperature range for solid electrochemical devices were major drawbacks. Regarding improving ionic-conducting electrolytes, several groups have contributed significantly to developing and applying LaGaO3 based perovskite as a superior ionic conductor. La(Sr)Ga(Mg)O3 (LSGM) electrolyte was successfully validated for intermediate-temperature solid oxide fuel cells (SOFCs) but was rarely conducted on SOECs for its high efficient electrolysis performance. Their lower mechanical strengths or higher reactivity with electrode compared with the YSZ electrolysis cells, which make it difficult to choose compatible materials, remain major challenges. In this field, SOECs have attracted a great attention in the last few years, as they offer significant power and higher efficiencies compared to conventional YSZ based electrolysers. Herein, SOECs using LSGM based electrolyte, their applications, high performance, and their issues will be reviewed.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":"1 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91487008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Evaluation of Layered Perovskite YBa0.5Sr0.5Co1.5Fe0.5O5+δ Cathode as a Triple Ionic and Electronic Conductor for Protonic Ceramic Fuel Cells 层状钙钛矿YBa0.5Sr0.5Co1.5Fe0.5O5+δ阴极作为质子陶瓷燃料电池三离子和电子导体的电化学评价

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.02

Inhyeok Cho, Sihyuk Choi

{"title":"Electrochemical Evaluation of Layered Perovskite YBa0.5Sr0.5Co1.5Fe0.5O5+δ Cathode as a Triple Ionic and Electronic Conductor for Protonic Ceramic Fuel Cells","authors":"Inhyeok Cho, Sihyuk Choi","doi":"10.31613/ceramist.2021.24.4.02","DOIUrl":"https://doi.org/10.31613/ceramist.2021.24.4.02","url":null,"abstract":"Protonic ceramic fuel cells (PCFCs) have receiving huge attention as a promising energy conversion device because of their high conversion efficiency, lack of fuel dilution, and high ionic conductivity at intermediate temperature regime (400 ∼ 600 oC). Although this fuel cell system can effectively solve the main obstacle for the commercialization of conventional solid oxide fuel cells, electrochemical performance is currently limited by the cathodic polarization due to insufficient catalytic activity. To overcome this issue, layered perovskite materials, PrBa0.5Sr0.5Co1.5Fe0.5O5+δ, have been discovered as triple ionic and electronic conductor, which enables to simultaneously conduct H+/O2-/e-. Despite great advantages, there is large gap in the thermal expansion coefficient (TEC) between the cathode and electrolyte. Herein, we developed a new triple conducting cathode material, YBa0.5Sr0.5Co1.5Fe0.5O5+δ (YBSCF) to minimize TEC while maintaining the high electro-catalytic activity with excellent hydration properties. Structural analysis, hydration properties, and electrochemical performances of YBSCF cathode were investigated. In particular, the peak power density of YBSCF cathode based on BaZr0.4Ce0.4Y0.1Yb0.1O3-δ (BZCYYb4411) electrolyte attained 0.702 W cm-2 at 600 oC. Moreover, power output is fairly stable for 300 h without observable degradation by applying a constant voltage of 0.7 V at 600 oC.","PeriodicalId":9738,"journal":{"name":"Ceramist","volume":"22 10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82713772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Progress in Metal-supported Solid Oxide Fuel Cells 金属支撑固体氧化物燃料电池的研究进展

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.04

Young-Wan Ju

引用次数: 0

Research Trends in Development of Highly Active Single Metal Oxide Catalyst for Oxidative Coupling of Methane 甲烷氧化偶联高活性单金属氧化物催化剂的研究进展

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.05

Goune Choi, B. Koo

引用次数: 0

Application of Electrochemical Deposition in Solid Oxide Fuel Cell Technology 电化学沉积在固体氧化物燃料电池技术中的应用

Ceramist Pub Date : 2021-12-31 DOI: 10.31613/ceramist.2021.24.4.03

Jinwook Kim, Hyunseung Kim, Seong-Hee Nam, Woochul Jung