Dielectric metamaterials based on ceramics have attracted considerable in-terest in the past few years owing to their low dielectric loss,simple structure,excellent multifield tunability,and good environmental adaptab...Dielectric metamaterials based on ceramics have attracted considerable in-terest in the past few years owing to their low dielectric loss,simple structure,excellent multifield tunability,and good environmental adaptability.They are considered to be promising alternative to metal-based metamaterials and can lead to a new strategy for the development of passive devices.In this review,the recent progress of ceramic-based dielectric metamaterials in electro-magnetic applications,energy applications,non-Hermitian systems,and natural materials with near-zero or negative refraction are summarized.The design principle and mechanism,as well as manufacturing technologies,are also introduced,and the current development trend of ceramic-based dielectric metamaterials are proposed.展开更多
Compared with other secondary batteries,lithium-sulfur batteries(LSBs)have unparalleled advantages such as high energy density,low cost,etc.In liquid LSB systems,it is extremely easy to cause severe‘‘shuttle effecto...Compared with other secondary batteries,lithium-sulfur batteries(LSBs)have unparalleled advantages such as high energy density,low cost,etc.In liquid LSB systems,it is extremely easy to cause severe‘‘shuttle effecto and safety issues.Hence,the development of solid-state LSBs(SSLSBs)has been attracting much more attention.As the most essential part of the SSLSBs,the solid-state electrolyte(SSE)has received significant attention from researchers.In this review,we concentrate on discussing the core of SSLSBs,which is the SSE.Moreover,we also highlight the differences in the properties of the different SSEs,which are polymer-based electrolytes and ceramic-based electrolytes.In addition,the challenges and advances in different types of SSEs are also compared and described systematically.Furthermore,the prospects for new SSE systems and the design of effective SSE structures to achieve highperformance SSLSBs are also discussed.Thus,this review is expected to give readers a comprehensive and systematic understanding of SSEs for SSLSBs.展开更多
By means of different checks and measures, we obserced and analysed the microstructure of Fe-Al/ Al2O3 composite material, We found that not only intragranular nanostructure grains and rod-like crystals but also fine-...By means of different checks and measures, we obserced and analysed the microstructure of Fe-Al/ Al2O3 composite material, We found that not only intragranular nanostructure grains and rod-like crystals but also fine-grained structure of the composite material as well as the bridging of the Fe-Al intermetallics compound contribute to the material＇s strength and toughness, It is shoun that the strengthening and toughening of the Fe- Al/ Al2O3 composite is the joint effect of a multiplicute strengthening and tougheniug mechanism.展开更多
基金Basic Science Center Project of NSFC,Grant/Award Number:No.51788104
文摘Dielectric metamaterials based on ceramics have attracted considerable in-terest in the past few years owing to their low dielectric loss,simple structure,excellent multifield tunability,and good environmental adaptability.They are considered to be promising alternative to metal-based metamaterials and can lead to a new strategy for the development of passive devices.In this review,the recent progress of ceramic-based dielectric metamaterials in electro-magnetic applications,energy applications,non-Hermitian systems,and natural materials with near-zero or negative refraction are summarized.The design principle and mechanism,as well as manufacturing technologies,are also introduced,and the current development trend of ceramic-based dielectric metamaterials are proposed.
基金Financial support provided by the National Natural Science Foundation of China(21606065,52072105,21676067,51972093,U1910210,and U1810204)the Anhui Provincial Natural Science Foundation(1708085QE98 and 1908085QE178)+3 种基金the Fundamental Research Funds for the Central Universities(PA2021KCPY0028,PA2021GDGP0059,JZ2018HGBZ0138,JZ2020YYPY0109,and PA2020GDJQ0026)the Australian Research Council(ARC)Discovery Project(DP180101453)the Key Technologies Research and Development Program of Anhui Province(202104a05020044)the Major Science and Technology Projects in Anhui Province(2021e03020001 and 202003a05020014)。
文摘Compared with other secondary batteries,lithium-sulfur batteries(LSBs)have unparalleled advantages such as high energy density,low cost,etc.In liquid LSB systems,it is extremely easy to cause severe‘‘shuttle effecto and safety issues.Hence,the development of solid-state LSBs(SSLSBs)has been attracting much more attention.As the most essential part of the SSLSBs,the solid-state electrolyte(SSE)has received significant attention from researchers.In this review,we concentrate on discussing the core of SSLSBs,which is the SSE.Moreover,we also highlight the differences in the properties of the different SSEs,which are polymer-based electrolytes and ceramic-based electrolytes.In addition,the challenges and advances in different types of SSEs are also compared and described systematically.Furthermore,the prospects for new SSE systems and the design of effective SSE structures to achieve highperformance SSLSBs are also discussed.Thus,this review is expected to give readers a comprehensive and systematic understanding of SSEs for SSLSBs.
文摘By means of different checks and measures, we obserced and analysed the microstructure of Fe-Al/ Al2O3 composite material, We found that not only intragranular nanostructure grains and rod-like crystals but also fine-grained structure of the composite material as well as the bridging of the Fe-Al intermetallics compound contribute to the material＇s strength and toughness, It is shoun that the strengthening and toughening of the Fe- Al/ Al2O3 composite is the joint effect of a multiplicute strengthening and tougheniug mechanism.
