From both historical and artistic points of view,Qinqiang Opera can be considered a significant genre outside the realms of Peking Opera and Kunqu Opera.The research on Qinqiang Opera has long been a focal point in th...From both historical and artistic points of view,Qinqiang Opera can be considered a significant genre outside the realms of Peking Opera and Kunqu Opera.The research on Qinqiang Opera has long been a focal point in the research on local operas with particular emphasis from a local perspective of the Yisu Art Troupe,a key and hot topic in the studies of Qinqiang Opera.Taking the Yisu Art Troupe as a case study to scrutinize and address the intricacies within the process of modernization of traditional Chinese opera proved to be beneficial.Since the 20th century,studies on the Yisu Art Troupe have evolved from scattered and impressionistic self-narratives into systematic and theoretical academic research.In the new century,scholars,such as Xin Xuefeng,Li Youjun,and Guo Hongjun,have been especially diligent with studies in this field.As Xin Xuefeng is relatively unknown due to his emphasis on traditional opera music,Li Youjun and Guo Hongjun have gradually emerged as important contemporary scholars in the study of the Yisu Art Troupe.Guo and Li not only further theorize the study of the Yisu Art Troupe but also conduct in-depth and meticulous studies on the nature of the Yisu Art Troupe,the establishment of the director-centered mode in Qinqiang Opera,the social function,and the playwriting of the Yisu Art Troupe by examining and reflecting it within the broader context of the modernization of traditional Chinese opera in the 20th century.展开更多
To clarify the corrosion mechanism associated with the precipitate of T1(Al2CuLi)in Al-Li alloys,the simulated bulk precipitate of T1 was fabricated through melting and casting.Its electrochemical behavior and couplin...To clarify the corrosion mechanism associated with the precipitate of T1(Al2CuLi)in Al-Li alloys,the simulated bulk precipitate of T1 was fabricated through melting and casting.Its electrochemical behavior and coupling behavior with α(Al)in 3.5% NaCl solution were investigated.Meanwhile,the simulated Al alloy containing T1 particle was prepared and its corrosion morphology was observed.The results show that there exists a dynamic conversion corrosion mechanism associated with the precipitate of T1.At the beginning,the precipitate of T1 is anodic to the alloy base and corrosion occurs on its surface.However,during its corrosion process,its potential moves to a positive direction with immersion time increasing,due to the preferential dissolution of Li and the enrichment of Cu.As a result,the corroded T1 becomes cathodic to the alloy base at a later stage,leading to the anodic dissolution and corrosion of the alloy base at its adjacent periphery.It is suggested that the localized corrosion associated with the precipitate of T1 in Al-Li alloys is caused by the alternate anodic dissolution of the T1 precipitate and the alloy base at its adjacent periphery.展开更多
Passivation by the inorganic-rich solid electrolyte interphase(SEI),especially the LiF-rich SEI,is highly desirable to guarantee the durable lifespan of Li metal batteries(LMBs).Here,we report a diluent with the capab...Passivation by the inorganic-rich solid electrolyte interphase(SEI),especially the LiF-rich SEI,is highly desirable to guarantee the durable lifespan of Li metal batteries(LMBs).Here,we report a diluent with the capability to facilitate the formation of LiF-rich SEI while avoiding the excess consumption of Li salts.Dissimilar to most of reported inert diluents,heptafluoro-l-methoxypropane(HM) is firstly demonstrated to cooperate with the decomposition of anions to generate LiF-rich SEI via releasing Fcontaining species near Li surface.The designed electrolyte consisting of 1.8 M LiFSI in the mixture of1,2-dimethoxyethane(DME)/HM(2:1 by vol.) achieves excellent compatibility with both Li metal anodes(Coulombic efficiency~99.8%) and high-voltage cathodes(4.4 V LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2)(NMC811) and 4.5 V LiCoO_(2)(LCO) vs Li^(+)/Li).The 4.4 V Li(20μm)‖NMC811(2.5 mA h cm^(-2)) and 4.5 V Li(20μm)‖LCO(2.5 mA h cm^(-2)) cells achieve capacity retentions of 80% over 560 cycles and 80% over 505 cycles,respectively.Meanwhile,the anode-free pouch cell delivers an energy density of~293 W h kg^(-1)initially and retains 70% of capacity after 100 deep cycles.This work highlights the critical impact of diluent on the SEI formation,and opens up a new direction for designing desirable interfacial chemistries to enable high-performance LMBs.展开更多
基金funded by the National Social Science Fund of China’s project“Research on the Modernization Construction of Chinese Drama Theory in the 20th Century”(Approval Number:19BZW098)。
文摘From both historical and artistic points of view,Qinqiang Opera can be considered a significant genre outside the realms of Peking Opera and Kunqu Opera.The research on Qinqiang Opera has long been a focal point in the research on local operas with particular emphasis from a local perspective of the Yisu Art Troupe,a key and hot topic in the studies of Qinqiang Opera.Taking the Yisu Art Troupe as a case study to scrutinize and address the intricacies within the process of modernization of traditional Chinese opera proved to be beneficial.Since the 20th century,studies on the Yisu Art Troupe have evolved from scattered and impressionistic self-narratives into systematic and theoretical academic research.In the new century,scholars,such as Xin Xuefeng,Li Youjun,and Guo Hongjun,have been especially diligent with studies in this field.As Xin Xuefeng is relatively unknown due to his emphasis on traditional opera music,Li Youjun and Guo Hongjun have gradually emerged as important contemporary scholars in the study of the Yisu Art Troupe.Guo and Li not only further theorize the study of the Yisu Art Troupe but also conduct in-depth and meticulous studies on the nature of the Yisu Art Troupe,the establishment of the director-centered mode in Qinqiang Opera,the social function,and the playwriting of the Yisu Art Troupe by examining and reflecting it within the broader context of the modernization of traditional Chinese opera in the 20th century.
基金Project(50401012) supported by the National Natural Science Foundation of China
文摘To clarify the corrosion mechanism associated with the precipitate of T1(Al2CuLi)in Al-Li alloys,the simulated bulk precipitate of T1 was fabricated through melting and casting.Its electrochemical behavior and coupling behavior with α(Al)in 3.5% NaCl solution were investigated.Meanwhile,the simulated Al alloy containing T1 particle was prepared and its corrosion morphology was observed.The results show that there exists a dynamic conversion corrosion mechanism associated with the precipitate of T1.At the beginning,the precipitate of T1 is anodic to the alloy base and corrosion occurs on its surface.However,during its corrosion process,its potential moves to a positive direction with immersion time increasing,due to the preferential dissolution of Li and the enrichment of Cu.As a result,the corroded T1 becomes cathodic to the alloy base at a later stage,leading to the anodic dissolution and corrosion of the alloy base at its adjacent periphery.It is suggested that the localized corrosion associated with the precipitate of T1 in Al-Li alloys is caused by the alternate anodic dissolution of the T1 precipitate and the alloy base at its adjacent periphery.
基金supported by the National Natural Science Foundation of China(22072134,22161142017,and U21A2081)the Natural Science Foundation of Zhejiang Province(LZ21B030002)+2 种基金the Fundamental Research Funds for the Zhejiang Provincial Universities(2021XZZX010)the Fundamental Research Funds for the Central Universities(2021FZZX001-09)“Hundred Talents Program” of Zhejiang University。
文摘Passivation by the inorganic-rich solid electrolyte interphase(SEI),especially the LiF-rich SEI,is highly desirable to guarantee the durable lifespan of Li metal batteries(LMBs).Here,we report a diluent with the capability to facilitate the formation of LiF-rich SEI while avoiding the excess consumption of Li salts.Dissimilar to most of reported inert diluents,heptafluoro-l-methoxypropane(HM) is firstly demonstrated to cooperate with the decomposition of anions to generate LiF-rich SEI via releasing Fcontaining species near Li surface.The designed electrolyte consisting of 1.8 M LiFSI in the mixture of1,2-dimethoxyethane(DME)/HM(2:1 by vol.) achieves excellent compatibility with both Li metal anodes(Coulombic efficiency~99.8%) and high-voltage cathodes(4.4 V LiNi_(0.8)Mn_(0.1)Co_(0.1)O_(2)(NMC811) and 4.5 V LiCoO_(2)(LCO) vs Li^(+)/Li).The 4.4 V Li(20μm)‖NMC811(2.5 mA h cm^(-2)) and 4.5 V Li(20μm)‖LCO(2.5 mA h cm^(-2)) cells achieve capacity retentions of 80% over 560 cycles and 80% over 505 cycles,respectively.Meanwhile,the anode-free pouch cell delivers an energy density of~293 W h kg^(-1)initially and retains 70% of capacity after 100 deep cycles.This work highlights the critical impact of diluent on the SEI formation,and opens up a new direction for designing desirable interfacial chemistries to enable high-performance LMBs.
基金Project(2013JSJJ0001)supported by the Teachers’ Research Fund,Central South University,ChinaProject supported by the Nonferrous Metal Oriented Advanced Structural Materials and Manufacturing Cooperative Innovation Center,China
