The risk of flammability is an unavoidable issue for gel polymer electrolytes(GPEs).Usually,flameretardant solvents are necessary to be used,but most of them would react with anode/cathode easily and cause serious int...The risk of flammability is an unavoidable issue for gel polymer electrolytes(GPEs).Usually,flameretardant solvents are necessary to be used,but most of them would react with anode/cathode easily and cause serious interfacial instability,which is a big challenge for design and application of nonflammable GPEs.Here,a nonflammable GPE(SGPE)is developed by in situ polymerizing trifluoroethyl methacrylate(TFMA)monomers with flame-retardant triethyl phosphate(TEP)solvents and LiTFSI–LiDFOB dual lithium salts.TEP is strongly anchored to PTFMA matrix via polarity interaction between-P=O and-CH_(2)CF_(3).It reduces free TEP molecules,which obviously mitigates interfacial reactions,and enhances flame-retardant performance of TEP surprisingly.Anchored TEP molecules are also inhibited in solvation of Li^(+),leading to anion-dominated solvation sheath,which creates inorganic-rich solid electrolyte interface/cathode electrolyte interface layers.Such coordination structure changes Li^(+)transport from sluggish vehicular to fast structural transport,raising ionic conductivity to 1.03 mS cm^(-1) and transfer number to 0.41 at 30℃.The Li|SGPE|Li cell presents highly reversible Li stripping/plating performance for over 1000 h at 0.1 mA cm^(−2),and 4.2 V LiCoO_(2)|SGPE|Li battery delivers high average specific capacity>120 mAh g^(−1) over 200 cycles.This study paves a new way to make nonflammable GPE that is compatible with Li metal anode.展开更多
Regulation the electronic density of solid-state electrolyte by donor–acceptor(D–A)system can achieve highly-selective Li^(+)transportation and conduction in solid-state Li metal batteries.This study reports a high-...Regulation the electronic density of solid-state electrolyte by donor–acceptor(D–A)system can achieve highly-selective Li^(+)transportation and conduction in solid-state Li metal batteries.This study reports a high-performance solid-state electrolyte thorough D–A-linked covalent organic frameworks(COFs)based on intramolecular charge transfer interactions.Unlike other reported COFbased solid-state electrolyte,the developed concept with D–A-linked COFs not only achieves electronic modulation to promote highly-selective Li^(+)migration and inhibit Li dendrite,but also offers a crucial opportunity to understand the role of electronic density in solid-state Li metal batteries.The introduced strong electronegativity F-based ligand in COF electrolyte results in highlyselective Li^(+)(transference number 0.83),high ionic conductivity(6.7×10^(-4)S cm^(−1)),excellent cyclic ability(1000 h)in Li metal symmetric cell and high-capacity retention in Li/LiFePO_(4)cell(90.8%for 300 cycles at 5C)than substituted C-and N-based ligands.This is ascribed to outstanding D–A interaction between donor porphyrin and acceptor F atoms,which effectively expedites electron transferring from porphyrin to F-based ligand and enhances Li^(+)kinetics.Consequently,we anticipate that this work creates insight into the strategy for accelerating Li^(+)conduction in high-performance solid-state Li metal batteries through D–A system.展开更多
Mr. Li Lanqing, Vice Premier of the State Council, expounded on China’s economy heading towards the 21st century,at the 32nd ICC World Congress. He said: China is greeting the 19th year of its reform and opening to t...Mr. Li Lanqing, Vice Premier of the State Council, expounded on China’s economy heading towards the 21st century,at the 32nd ICC World Congress. He said: China is greeting the 19th year of its reform and opening to the outside world. In the past 18 years, especially in the 1990s,China’s economy, as an integral part of the world economy, has assumed three interrelated new features, under the circumstances of speeding up the development, deepening the reform, and expanding the opening. 1. Lasting trend for sustained and rapid economic growth. China has 1.2 billion people with everrising income and consumption levels and huge market demand, and the Chinese people have the habit of saving. So there are large amounts of bank deposits to展开更多
目的:构建应急标本信息采集系统,评价其在无网络条件下实现重大传染病疫情防控中的标本采集工作的规范性和准确性。方法:采用Sybase Power Builder开发工具,将Microsoft Access作为后台数据库,选取客户端与服务器(C/S)架构模式,以医院...目的:构建应急标本信息采集系统,评价其在无网络条件下实现重大传染病疫情防控中的标本采集工作的规范性和准确性。方法:采用Sybase Power Builder开发工具,将Microsoft Access作为后台数据库,选取客户端与服务器(C/S)架构模式,以医院实验室信息系统(LIS)或第三方系统为基础,构建能够应对重大传染病大规模标本采样工作的应急标本信息采集系统,对比不同标本信息采样方式的应用效果。结果:应急标本采集系统采集信息的信息录入完整率、正确率及时效性均优于手工方式,差异有统计学意义(x^(2)=89.97、109.83,P<0.05)、(t=146.74,P<0.05),提高了标本采集的效率,减少信息差错率,还可降低交叉感染风险,使重大传染病疫情防控中的标本采集工作更加规范和便捷。结论:应急标本信息采集系统在应对重大传染病大规模采样工作中起到重要作用,能够提升工作效率,保障信息的安全性和准确性。展开更多
随着医疗信息化水平的不断提升,医院实验室信息系统(laboratory information system,LIS)在医疗领域的应用越来越广泛。数据传输作为医院实验室信息系统的核心环节,其安全性、稳定性和效率直接影响着医疗服务的质量和效率。本文概述了...随着医疗信息化水平的不断提升,医院实验室信息系统(laboratory information system,LIS)在医疗领域的应用越来越广泛。数据传输作为医院实验室信息系统的核心环节,其安全性、稳定性和效率直接影响着医疗服务的质量和效率。本文概述了医院实验室信息系统的定义和功能,以及LIS的发展现状,并深入分析了医院实验室信息系统数据传输的技术需求,包括数据传输的特点、安全性要求以及优化方向。旨在为医院实验室信息系统数据传输技术的优化和发展提供有益的参考和借鉴。展开更多
基金supported by the National Natural Science Foundation of China(Nos.52172214,52272221,52171182)the Postdoctoral Innovation Project of Shandong Province(No.202102003)+2 种基金The Key Research and Development Program of Shandong Province(2021ZLGX01)the Qilu Young Scholar ProgramHPC Cloud Platform of Shandong University are also thanked.
文摘The risk of flammability is an unavoidable issue for gel polymer electrolytes(GPEs).Usually,flameretardant solvents are necessary to be used,but most of them would react with anode/cathode easily and cause serious interfacial instability,which is a big challenge for design and application of nonflammable GPEs.Here,a nonflammable GPE(SGPE)is developed by in situ polymerizing trifluoroethyl methacrylate(TFMA)monomers with flame-retardant triethyl phosphate(TEP)solvents and LiTFSI–LiDFOB dual lithium salts.TEP is strongly anchored to PTFMA matrix via polarity interaction between-P=O and-CH_(2)CF_(3).It reduces free TEP molecules,which obviously mitigates interfacial reactions,and enhances flame-retardant performance of TEP surprisingly.Anchored TEP molecules are also inhibited in solvation of Li^(+),leading to anion-dominated solvation sheath,which creates inorganic-rich solid electrolyte interface/cathode electrolyte interface layers.Such coordination structure changes Li^(+)transport from sluggish vehicular to fast structural transport,raising ionic conductivity to 1.03 mS cm^(-1) and transfer number to 0.41 at 30℃.The Li|SGPE|Li cell presents highly reversible Li stripping/plating performance for over 1000 h at 0.1 mA cm^(−2),and 4.2 V LiCoO_(2)|SGPE|Li battery delivers high average specific capacity>120 mAh g^(−1) over 200 cycles.This study paves a new way to make nonflammable GPE that is compatible with Li metal anode.
基金financial support provided by National Natural Science Foundation of China(52303283,52372232,52064049)the Major Science and Technology Projects of Yunnan Province(202302AB080019-3)+2 种基金National Natural Science Foundation of Yunnan Province(202301AS070040,202401AU070201)the Analysis and Measurements Center of Yunnan University for the sample testing servicethe Electron Microscope Center of Yunnan University for the support of this work.
文摘Regulation the electronic density of solid-state electrolyte by donor–acceptor(D–A)system can achieve highly-selective Li^(+)transportation and conduction in solid-state Li metal batteries.This study reports a high-performance solid-state electrolyte thorough D–A-linked covalent organic frameworks(COFs)based on intramolecular charge transfer interactions.Unlike other reported COFbased solid-state electrolyte,the developed concept with D–A-linked COFs not only achieves electronic modulation to promote highly-selective Li^(+)migration and inhibit Li dendrite,but also offers a crucial opportunity to understand the role of electronic density in solid-state Li metal batteries.The introduced strong electronegativity F-based ligand in COF electrolyte results in highlyselective Li^(+)(transference number 0.83),high ionic conductivity(6.7×10^(-4)S cm^(−1)),excellent cyclic ability(1000 h)in Li metal symmetric cell and high-capacity retention in Li/LiFePO_(4)cell(90.8%for 300 cycles at 5C)than substituted C-and N-based ligands.This is ascribed to outstanding D–A interaction between donor porphyrin and acceptor F atoms,which effectively expedites electron transferring from porphyrin to F-based ligand and enhances Li^(+)kinetics.Consequently,we anticipate that this work creates insight into the strategy for accelerating Li^(+)conduction in high-performance solid-state Li metal batteries through D–A system.
文摘Mr. Li Lanqing, Vice Premier of the State Council, expounded on China’s economy heading towards the 21st century,at the 32nd ICC World Congress. He said: China is greeting the 19th year of its reform and opening to the outside world. In the past 18 years, especially in the 1990s,China’s economy, as an integral part of the world economy, has assumed three interrelated new features, under the circumstances of speeding up the development, deepening the reform, and expanding the opening. 1. Lasting trend for sustained and rapid economic growth. China has 1.2 billion people with everrising income and consumption levels and huge market demand, and the Chinese people have the habit of saving. So there are large amounts of bank deposits to
文摘目的:构建应急标本信息采集系统,评价其在无网络条件下实现重大传染病疫情防控中的标本采集工作的规范性和准确性。方法:采用Sybase Power Builder开发工具,将Microsoft Access作为后台数据库,选取客户端与服务器(C/S)架构模式,以医院实验室信息系统(LIS)或第三方系统为基础,构建能够应对重大传染病大规模标本采样工作的应急标本信息采集系统,对比不同标本信息采样方式的应用效果。结果:应急标本采集系统采集信息的信息录入完整率、正确率及时效性均优于手工方式,差异有统计学意义(x^(2)=89.97、109.83,P<0.05)、(t=146.74,P<0.05),提高了标本采集的效率,减少信息差错率,还可降低交叉感染风险,使重大传染病疫情防控中的标本采集工作更加规范和便捷。结论:应急标本信息采集系统在应对重大传染病大规模采样工作中起到重要作用,能够提升工作效率,保障信息的安全性和准确性。
文摘随着医疗信息化水平的不断提升,医院实验室信息系统(laboratory information system,LIS)在医疗领域的应用越来越广泛。数据传输作为医院实验室信息系统的核心环节,其安全性、稳定性和效率直接影响着医疗服务的质量和效率。本文概述了医院实验室信息系统的定义和功能,以及LIS的发展现状,并深入分析了医院实验室信息系统数据传输的技术需求,包括数据传输的特点、安全性要求以及优化方向。旨在为医院实验室信息系统数据传输技术的优化和发展提供有益的参考和借鉴。
