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Structure-regulated fluorine-containing additives to improve the performance of perovskite solar cells

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Nano Research 2024年第7期17卷 6080-6086页

作者： Peiya Chen Xiaoman bi Hao Yan yingjie Zhao Yihao Liu Zhuo Huang Qian Xiao Yongpeng Yang Shasha Zhang Yiqiang Zhang Yanlin Song Henan Institute of Advanced Technology College of ChemistrySchool of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(ICCAS)Beijing Engineering Research Center of Nanomaterials for Green Printing TechnologyNational Laboratory for Molecular Sciences(BNLMS)Beijing 100190China

Perovskite solar cells(PSCs)have seen remarkable progress in recent years,largely attributed to various additives that enhance both efficiency and *** these,fluorine-containing additives have garnered significant interest because of their unique hydrophobic properties,effective defect passivation,and regulation capability on the crystallization ***,a targeted structural approach to design such additives is necessary to further enhance the performance of ***,fluoroalkyl ethylene with different fluoroalkyl chain lengths(CH_(2)CH(CF_(2))nCF_(3),n=3,5,and 7)as liquid additives is used to investigate influences of fluoroalkyl chain lengths on crystallization regulation and defect *** findings indicate that optimizing the quantity of F groups plays a crucial role in regulating the electron cloud distribution within the additive *** optimization fosters strong hydrogen bonds and coordination effects with FA+and uncoordinated Pb^(2+),ultimately enhancing crystal quality and device ***,1H,1H,2H-perfluoro-1-hexene(PF_(3))with the optimal number of F presents the most effective modulation effect.A PSC utilizing PF_(3)achieves an efficiency of 24.05%,and exhibits exceptional stability against humidity and thermal *** work sheds light on the importance of tailored structure designs in additives for achieving high-performance PSCs.

关键词： perovskite solar cells fluorine number additive structure crystallization regulation defect passivation

Sulfhydryl-functionalized COF-based electrolyte strengthens chemical affinity toward polysulfides in quasi-solid-state Li-S batteries

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Carbon Energy 2024年第9期6卷 221-234页

作者： Linnan bi Jie Xiao Yaochen Song Tianrui Sun Mingkai Luo Yi Wang Peng Dong yingjie Zhang Yao Yao Jiaxuan Liao Sizhe Wang Shulei Chou Yangtze Delta Region Institute(Quzhou) University of Electronic Science and Technology of ChinaQuzhouChina National and Local Joint Engineering Research Center of Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunmingChina Institute for Carbon Neutralization College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengduChina School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi'anChina

For lithium-sulfur batteries(Li-S batteries),a high-content electrolyte typically can exacerbate the shuttle effect,while a lean electrolyte may lead to decreased Li-ion conductivity and reduced catalytic conversion efficiency,so achieving an appropriate electrolyte-to-sulfur ratio(E/S ratio)is essential for improving the battery cycling efficiency.A quasi-solid electrolyte(COF-SH@PVDF-HFP)with strong adsorption and high catalytic conversion was constructed for in situ covalent organic framework(COF)growth on highly polarized polyvinylidene fluoride-hexafluoropropylene(PVDF-HFP)***-SH@PVDF-HFP enables efficient Li-ion conductivity with low-content liquid electrolyte and effectively suppresses the shuttle *** results based on in situ Fourier-transform infrared,in situ Raman,UV–Vis,X-ray photoelectron,and density functional theory calculations confirmed the high catalytic conversion of COF-SH layer containing sulfhydryl and imine groups for the lithium *** plating/stripping tests based on Li/COF-SH@PVDF-HFP/Li show excellent lithium compatibility(5 mAh cm^(-2) for 1400 h).The assembled Li-S battery exhibits excellent rate(2 C 688.7 mAh g^(-1))and cycle performance(at 2 C of 568.8 mAh g^(-1) with a capacity retention of 77.3%after 800 cycles).This is the first report to improve the cycling stability of quasi-solid-state Li-S batteries by reducing both the E/S ratio and the designing strategy of sulfhydryl-functionalized COF for quasi-solid *** process opens up the possibility of the high performance of solid-state Li-S batteries.

关键词： lithium-sulfur batteries low electrolyte-to-sulfur ratio polysulfide shuttle PVDF-HFP/COF

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基于最大相关熵准则的恒模盲均衡算法

信号处理 2020年第1期36卷 118-124页

作者：毕英杰李森大连海事大学信息科学技术学院辽宁大连116026

针对恒模算法(constant modulus algorithm,CMA)在脉冲噪声环境下性能退化的问题,本文基于最大相关熵准则(maximum correntropy criterion,MCC)对恒模算法中基于最小均方误差(mean square error,MSE)准则的代价函数进行修正,推导出适用... 详细信息

针对恒模算法(constant modulus algorithm,CMA)在脉冲噪声环境下性能退化的问题,本文基于最大相关熵准则(maximum correntropy criterion,MCC)对恒模算法中基于最小均方误差(mean square error,MSE)准则的代价函数进行修正,推导出适用于脉冲噪声环境的基于MCC准则的恒模盲均衡算法(MCC_CMA)。该算法利用通信信号的恒模特性,首先得到发送信号与均衡器输出信号模值的误差信号,再通过使模值误差信号的相关熵最大来获得其迭代误差调节项,避免了传统高阶统计量算法在脉冲噪声环境下性能退化的问题。对高斯噪声以及α-稳定分布和混合高斯分布两种脉冲噪声环境下的信道均衡问题的仿真实验表明,相对于经典的自适应恒模盲均衡算法,MCC_CMA算法不依赖噪声的先验知识就能获得较快的收敛速度、较低的剩余码间干扰和误码率,并且在不同脉冲强度的脉冲噪声环境下都能够得到较好的均衡结果,表明MCC_CMA算法具有很好的鲁棒性。

关键词：盲均衡最大相关熵准则脉冲噪声恒模算法

Reinforced Lewis covalent bond by twinborn nitride heterostructure for lithium-sulfur batteries

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Journal of Energy Chemistry 2024年第1期88卷 363-372,I0009页

作者： Yaochen Song Pengkai Tang Yanjie Wang Yi Wang Linnan bi Qi Liang Liang He Qingyu Xie Yiyong Zhang Peng Dong yingjie Zhang Yao Yao Jiaxuan Liao Sizhe Wang Yangtze Delta Region Institute(QuZhou) University of Electronic Science and Technology of ChinaQinzhou 324000ZhejiangChina School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731SichuanChina National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093YunnanChina School of Materials Science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic MaterialsShaanxi University of Science&TechnologyXi’an 710021ShaanxiChina School of Environmental Science and Engineering North China Electric Power UniversityBaoding 071003HebeiChina

The practical application of lithium-sulfur(Li-S)batteries,as promising next-generation batteries,is hindered by their shuttle effect and the slow redox ***,a tungsten and molybdenum nitride heterostructure functionalized with hollow metal-organic framework-derived carbon(W_(2)N/Mo_(2)N)was proposed as the sulfur *** hollow spherical structure provides storage space for sulfur,enhances electrical conductivity,and inhibits volume *** metal atoms in the nitrides bonded with lithium polysulfides(Li PSs)through Lewis covalent bonds,enhancing the high catalytic activity of the nitrides and effectively reducing the energy barrier of Li PSs redox ***,the high intrinsic conductivity of nitrides and the ability of the heterostructure interface to accelerate electron/ion transport improved the Li+*** leveraging the combined properties of strong adsorption and high catalytic activity,the sulfur host effectively inhibited the shuttle effect and accelerated the redox kinetics of Li ***-efficiency Li+transmission,strong adsorption,and the efficient catalytic conversion activities of Li PSs in the heterostructure were experimentally and theoretically *** results indicate that the W_(2)N/Mo_(2)N cathode provides stable,and long-term cycling(over 2000 cycles)at 3 C with a low attenuation rate of 0.0196%per *** design strategy of a twinborn nitride heterostructure thus provides a functionalized solution for advanced Li-S batteries.

关键词： Heterostructure Adsorption Redox kinetics

打造数字化协同制造企业——MES未来发展的新方向

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自动化仪表 2010年第10期31卷 1-4页

作者：丛力群毕英杰上海宝信软件股份有限公司上海201900

随着制造企业之间竞争的日趋激烈,新产品推出的快速化、差异化和高品质化,制造过程的透明化、可视化,交货的准时化以及成本的最低化都是决定企业在激烈市场竞争中立足的关键因素。实现竞争的有效手段是利用信息技术来改造传统的企业管... 详细信息

随着制造企业之间竞争的日趋激烈,新产品推出的快速化、差异化和高品质化,制造过程的透明化、可视化,交货的准时化以及成本的最低化都是决定企业在激烈市场竞争中立足的关键因素。实现竞争的有效手段是利用信息技术来改造传统的企业管理模式。通过引入数字化企业的概念,介绍了MES如何在打造数字化协同制造企业中发挥作用,同时就这一制造模式下如何构造MES系统进行了探讨。作为制造企业的核心系统,MES未来的发展方向一定会聚焦在如何帮助企业实现数字化协同制造上。

关键词：协同制造制造管理模型企业服务总线制造执行系统数字化企业

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高加三通阀结构研究

锅炉制造 2012年第5期 57-59页

作者：毕英杰哈电集团哈尔滨电站阀门有限公司黑龙江哈尔滨150046

本文介绍了高加三通阀几种结构的技术特点,分析了不同结构高加三通阀的性能,得出结论内置高压活塞三通阀适用于超(超)临界机组。

关键词：高加三通阀外置执行机构内置高压活塞液动执行机构

The Research and Application of MES Key Technology in Steel Enterprise

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The Research and Application of MES Key Technology in Steel ...

DDX56对脑心肌炎病毒体外增殖的调控作用研究

技术创新与循环经济——第二届宝钢学术年会

作者： CONG Liqun bi yingjie HE Haoran WEI Zhen (Shanghai Baosight Software Co. Ltd. Shanghai 201900 China)

＜正＞The authors proposes the function architecture of the steel MES and elaborate some key technologies of steel *** article focuses on the analysis of "steelmaking - continuous casting - hot rolling integrated optimization planning" and its key technology’ s role in *** application of this key technology in practical production is also introduced through some specific cases and thus the latest fruits of research and application of steel MES is fully revealed in the article.

关键词： MES steel key technology informationalization

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中华微生物学和免疫学杂志 2020年第12期40卷 909-915页

作者：许淑娟谢晶莹毕英杰冯若飞西北民族大学生物医学研究中心生物工程与技术国家民委重点实验室兰州730070

目的探讨DDX56解旋酶在脑心肌炎病毒(encephalomyocarditis virus,EMCV)感染A549细胞复制增殖过程中的调控作用。方法通过免疫印迹法、qPCR以及TCID50检测上调/下调A549细胞中DDX56并接种EMCV病毒,以空载组为对照组,分析其对病毒增殖的... 详细信息

目的探讨DDX56解旋酶在脑心肌炎病毒(encephalomyocarditis virus,EMCV)感染A549细胞复制增殖过程中的调控作用。方法通过免疫印迹法、qPCR以及TCID50检测上调/下调A549细胞中DDX56并接种EMCV病毒,以空载组为对照组,分析其对病毒增殖的影响及对病毒感染引起的RLRs信号通路中关键接头蛋白活化的影响。结果A549细胞接种EMCV后,DDX56蛋白水平表达量逐步递增。过表达DDX56可以促进EMCV在宿主细胞中的增殖,干扰DDX56可以抑制EMCV在宿主细胞中的增殖。并且DDX56通过负调控RLRs信号通路中接头分子MAVS、TBK1、IRF3的活化实现对EMCV复制的正调控作用。结论DDX56促进EMCV增殖是通过抑制RLRs信号通路中接头蛋白的活化来实现的,为EMCV感染的固有免疫应答和调控研究奠定理论基础。

关键词： DDX56 脑心肌炎病毒 RLRs信号通路调控

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肝硬化营养不良患者肠道菌群的组成特征分析

临床肝胆病杂志 2024年第1期40卷 83-88页

作者：毕炯炯马英杰河南中医药大学第五临床医学院郑州450003 河南中医药大学人民医院/郑州人民医院消化内科郑州450003

目的研究肝硬化营养不良患者肠道菌群的组成特征和血清内毒素水平,旨在为提高肝硬化患者的营养状况提供新的诊疗思路。方法收集2021年3月—2022年11月在郑州人民医院消化内科住院的58例肝硬化患者作为试验组(LC组),根据皇家自由医院营... 详细信息

目的研究肝硬化营养不良患者肠道菌群的组成特征和血清内毒素水平,旨在为提高肝硬化患者的营养状况提供新的诊疗思路。方法收集2021年3月—2022年11月在郑州人民医院消化内科住院的58例肝硬化患者作为试验组(LC组),根据皇家自由医院营养优先排序工具分为低营养不良风险组(LC-A组,n=28)和中/高营养不良风险组(LC-B组,n=30),并选择同期25例健康体检者作为对照组(HC组)。采集所有受试对象的外周血和粪便样本,用鲎试剂凝胶法检测外周血内毒素浓度,并用高通量测序技术及生物信息学分析肠道菌群间的特征。正态分布的计量资料两组间比较采用成组t检验,多组间比较采用单因素方差分析,进一步两两比较采用LSD-t检验;非正态分布的计量资料两组间比较采用Mann-Whitney U检验,多组间比较采用Kruskal-Wallis H检验。计数资料组间比较采用χ^(2)检验。相关性分析采用Spearman检验。结果三组ALT(H=7.054)、GGT(H=9.644)、Alb(F=32.768)、Tbil(H=20.980)及血清内毒素水平(F=108.672)差异均有统计学意义(P值均bil呈显著正相关(r=0.419,P=0.007),与Alb呈显著负相关(r=-0.492,P=0.001)。结论肝硬化营养不良患者中存在独特的肠道菌群改变,并且差异菌群与内毒素血症存在相关性,改善肝硬化肠道微生态可能有助于改善营养状况。

关键词：肝硬化胃肠道微生物组营养不良

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