The co-pressing and co-firing processes are often used to prepare the anode-electrolyte half cells for solid oxide fuel cells(SOFCs).To get a half cell without cracks,the sintering behavior of electrolyte and anode la...The co-pressing and co-firing processes are often used to prepare the anode-electrolyte half cells for solid oxide fuel cells(SOFCs).To get a half cell without cracks,the sintering behavior of electrolyte and anode layers must be controlled carefully.In this work,the sintering behavior展开更多
Mixed conductors of oxygen ion and electron are important materials.They have been used as oxygen permeation membranes or electrodes of fuel cells.Doped LaGaO_3 and La_2Ni O_4 are both mixed conductors,but they have d...Mixed conductors of oxygen ion and electron are important materials.They have been used as oxygen permeation membranes or electrodes of fuel cells.Doped LaGaO_3 and La_2Ni O_4 are both mixed conductors,but they have different crystal structures which will result in different展开更多
Preparation for Glycine-Mg/Al-Layered dou-ble hydroxide(LDH-G)/PVA nanocompositeswas carried out via exfoliation-adsorption routebased on exfoliation of LDH-G in formamide.Theeffect of ultrasonic treatment on the fabr...Preparation for Glycine-Mg/Al-Layered dou-ble hydroxide(LDH-G)/PVA nanocompositeswas carried out via exfoliation-adsorption routebased on exfoliation of LDH-G in formamide.Theeffect of ultrasonic treatment on the fabrication ofLDH-G/PVA nanocomposites was investigated,and the thermal stability of PVA containing the na-no-scale dispersed LDH-G was analyzed.The re-sults of XRD suggest that chains of PVA with展开更多
Doped BaCeO_3 is a kind of proton conductor which exhibits high electrical conductivities at relatively low operating temperatures.It has been used as the electrolyte materials for proton ceramic fuel cells,and the ef...Doped BaCeO_3 is a kind of proton conductor which exhibits high electrical conductivities at relatively low operating temperatures.It has been used as the electrolyte materials for proton ceramic fuel cells,and the effects of dopants on the sinter-ability and electrical performance are critical factors.展开更多
Doped La_2NiO_4 are promising cathode materials for solid oxide fuel cells(SOFCs)which are environment friendly energy conversion devices.In this work,the synthesis of Sr,Fe and Cu doped La_2NiO_4 and the effects of d...Doped La_2NiO_4 are promising cathode materials for solid oxide fuel cells(SOFCs)which are environment friendly energy conversion devices.In this work,the synthesis of Sr,Fe and Cu doped La_2NiO_4 and the effects of dopants on phase formation during calcination and on展开更多
Layered double hydroxides(LDHs)are aclass of layered inorganic materials that consist ofstructurally positively charged layers and exchange-able anions in the interlayer gallery for charge bal-ance.The delamination of...Layered double hydroxides(LDHs)are aclass of layered inorganic materials that consist ofstructurally positively charged layers and exchange-able anions in the interlayer gallery for charge bal-ance.The delamination of LDHs is decided by syn-thesis method to some extent.In this work,LDHsare synthesized via three different routes and theirdelamination properties are characterized.Co-precipitation methodion-exchange meth-展开更多
Efficient and continuous monitoring of surface water is essential for water resource management.Much effort has been devoted to the task of water mapping based on remote sensing images.However,few studies have fully c...Efficient and continuous monitoring of surface water is essential for water resource management.Much effort has been devoted to the task of water mapping based on remote sensing images.However,few studies have fully considered the diverse spectral properties of water for the collection of reference samples in an automatic manner.Moreover,water area statistics are sensitive to the satellite image observation quality.This study aims to develop a fully automatic surface water mapping framework based on Google Earth Engine(GEE)with a supervised random forest classifier.A robust scheme was built to automatically construct training samples by merging the information from multi-source water occurrence products.The samples for permanent and seasonal water were mapped and collected separately,so that the supplement of seasonal samples can increase the spectral diversity of the sample space.To reduce the uncertainty of the derived water occurrences,temporal correction was applied to repair the classification maps with invalid observations.Extensive experiments showed that the proposed method can generate reliable samples and produce good-quality water mapping results.Comparative tests indicated that the proposed method produced water maps with a higher quality than the index-based detection methods,as well as the GSWD and GLAD datasets.展开更多
文摘The co-pressing and co-firing processes are often used to prepare the anode-electrolyte half cells for solid oxide fuel cells(SOFCs).To get a half cell without cracks,the sintering behavior of electrolyte and anode layers must be controlled carefully.In this work,the sintering behavior
文摘Mixed conductors of oxygen ion and electron are important materials.They have been used as oxygen permeation membranes or electrodes of fuel cells.Doped LaGaO_3 and La_2Ni O_4 are both mixed conductors,but they have different crystal structures which will result in different
文摘Preparation for Glycine-Mg/Al-Layered dou-ble hydroxide(LDH-G)/PVA nanocompositeswas carried out via exfoliation-adsorption routebased on exfoliation of LDH-G in formamide.Theeffect of ultrasonic treatment on the fabrication ofLDH-G/PVA nanocomposites was investigated,and the thermal stability of PVA containing the na-no-scale dispersed LDH-G was analyzed.The re-sults of XRD suggest that chains of PVA with
文摘Doped BaCeO_3 is a kind of proton conductor which exhibits high electrical conductivities at relatively low operating temperatures.It has been used as the electrolyte materials for proton ceramic fuel cells,and the effects of dopants on the sinter-ability and electrical performance are critical factors.
文摘Doped La_2NiO_4 are promising cathode materials for solid oxide fuel cells(SOFCs)which are environment friendly energy conversion devices.In this work,the synthesis of Sr,Fe and Cu doped La_2NiO_4 and the effects of dopants on phase formation during calcination and on
文摘Layered double hydroxides(LDHs)are aclass of layered inorganic materials that consist ofstructurally positively charged layers and exchange-able anions in the interlayer gallery for charge bal-ance.The delamination of LDHs is decided by syn-thesis method to some extent.In this work,LDHsare synthesized via three different routes and theirdelamination properties are characterized.Co-precipitation methodion-exchange meth-
基金supported by the National Natural Science Foundation of China[grants numbers 42171375 and 41801263].
文摘Efficient and continuous monitoring of surface water is essential for water resource management.Much effort has been devoted to the task of water mapping based on remote sensing images.However,few studies have fully considered the diverse spectral properties of water for the collection of reference samples in an automatic manner.Moreover,water area statistics are sensitive to the satellite image observation quality.This study aims to develop a fully automatic surface water mapping framework based on Google Earth Engine(GEE)with a supervised random forest classifier.A robust scheme was built to automatically construct training samples by merging the information from multi-source water occurrence products.The samples for permanent and seasonal water were mapped and collected separately,so that the supplement of seasonal samples can increase the spectral diversity of the sample space.To reduce the uncertainty of the derived water occurrences,temporal correction was applied to repair the classification maps with invalid observations.Extensive experiments showed that the proposed method can generate reliable samples and produce good-quality water mapping results.Comparative tests indicated that the proposed method produced water maps with a higher quality than the index-based detection methods,as well as the GSWD and GLAD datasets.
