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Eliminating H_(2)O/HF and regulating interphase with bifunctional tolylene-2,4-diisocyanate(TDI)additive for long life li-ion battery

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Journal of Energy Chemistry 2024年第8期95卷 519-528,I0011页

作者： Xueyi Zeng Xiang Gao Peiqi Zhou Haijia li Xin He Weizhen Fan Chaojun Fan Tianxiang Yang Zhen Ma Xiaoyang Zhao Junmin Nan School of Chemistry South China Normal UniversityGuangzhou 510006GuangdongChina Guangzhou Tinci Materials Technology Co.Ltd. Guangzhou 510760GuangdongChina School of Environmental Engineering and Chemistry Luoyang Institute of Science and TechnologyLuoyang 471023HenanChina School of Geomatic and Environmental Engineering Henan Polytechnic InstituteNanyang 473000HenanChina

lithium-ion batteries(liBs)featuring a Ni-rich cathode exhibit increased specific capacity,but the establishment of a stable interphase through the implementation of a functional electrolyte strategy remains *** when the battery is operated under high temperature,the trace water present in the electrolyte will accelerate the hydrolysis of the electrolyte and the resulting HF will further erode the *** order to enhance the long-term cycling performance of graphite/liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)liBs,herein,Tolylene-2,4-diisocyanate(TDI)additive containing lone-pair electrons is employed to formulate a novel bifunctional electrolyte aimed at eliminating H_(2)O/HF generated at elevated *** 1000 cycles at 25℃,the battery incorporating the TDI-containing electrolyte exhibits an impressive capacity retention of 94%at 1 *** contrast,the battery utilizing the blank electrolyte has a lower capacity retention of only 78%.Furthermore,after undergoing 550 cycles at 1 C under45℃,the inclusion of TDI results in a notable enhancement of capacity,increasing it from 68%to 80%.This indicates TDI has a favorable influence on the cycling performance of liBs,especially at elevated *** analysis of the film formation mechanism suggests that the lone pair of electrons of the isocyanate group in TDI play a crucial role in inhibiting the generation of H_(2)O and HF,which leads to the formation of a thin and dense *** existence of this interphase is thought to substantially enhance the cycling performance of the *** work not only improves the performance of graphite/NCM811 batteries at room temperature and high temperature by eliminating H_(2)O/HF but also presents a novel strategy for advancing functional electrolyte development.

关键词： Graphite/liNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)battery Tolylene-2 4-diisocyanate Long-cycling performance H_(2)O/HF eliminated additive

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考虑主缆镀锌层蠕变的索夹螺杆紧固力损失预测

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中国公路学报 2024年第7期37卷 157-167页

作者：周勇军贾利强杨帆赵煜穆丰睿张馨浩景薇丁丽鑫孟广林长安大学公路大型结构安全教育部工程研究中心陕西西安710064 广西欣港交通投资有限公司广西南宁530000 陕西省交通规划设计研究院有限公司陕西西安710065 中铁二十局第六工程公司工程部陕西西安712000 西安市安居新能源发展有限公司陕西西安710075 陕西交通城市矿产循环科技有限公司陕西西安713704

为研究悬索桥索夹在施工及运营阶段中螺杆紧固力损失规律与预测模型,以广西龙门大桥主缆索夹为研究对象,基于室内试验,采用时间硬化理论对悬索桥主缆轴向蠕变以及考虑主缆镀锌层蠕变的索夹螺杆蠕变参数分别进行非线性回归拟合,并通过建... 详细信息

为研究悬索桥索夹在施工及运营阶段中螺杆紧固力损失规律与预测模型,以广西龙门大桥主缆索夹为研究对象,基于室内试验,采用时间硬化理论对悬索桥主缆轴向蠕变以及考虑主缆镀锌层蠕变的索夹螺杆蠕变参数分别进行非线性回归拟合,并通过建立的索夹局部有限元模型对拟合参数进行验证。研究了螺杆应力随时间的损失规律;建立了全桥有限元模型,对运营阶段各类型和位置的索夹螺杆进行紧固力损失的有限元模拟预测。研究结果表明:对于材料蠕变,有限元计算值比公式值小6%,螺杆张拉后10000 h有限元计算误差在10%以内;在索夹螺杆初次张拉完成后的40 d内应对其进行检测与补张,在施工阶段二次补张完成后的2年3个月内应再次对索夹螺杆紧固力进行检测与补张。研究结论可为悬索桥索夹螺杆紧固力检测与养护提供技术支持。

关键词：桥梁工程悬索桥蠕变模型螺杆紧固力

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Herb induced liver injury by Xianling Gubao Tablets: A case assessed for causality using updated RUCAM and integrated evidence chain

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Chinese Herbal Medicines 2024年第2期16卷 301-309页

作者： Chunyu li Yingying li Zhaofang Bai Jiabo Wang Guohui li Xiaohe Xiao National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China Senior Department of Hepatology The Fifth Medical Center of PLA General HospitalBeijing 100039China School of Traditional Chinese Medicine Capital Medicinal UniversityBeijing 100069China

Objective:A typical case of Xianling Gubao(XLGB)Tablets-induced liver injury was systematically studied in the clinic and the ***:A patient with herb-induced liver injury(HIli)and a history of taking XLGB Tablets before disease onset was engaged as the study subject,and the case was diagnosed according to the updated Roussel Uclaf Causality Assessment Method(RUCAM)and the integrated evidence chain(iEC)method recommended by the Guidelines for Diagnosis and Treatment of Herb-induced liver Injury(HIli Guidelines).Results:Clinical history,biochemical indexes and imaging tests were used to exclude the influence of fundamental diseases and confusing liver diseases such as viral,alcoholic and autoimmune liver diseases on the *** on an investigation of the patient’s medication history,she was suspected to have HIli caused by XLGB Tablets,as the patient was only taking an oral preparation of XLGB Tablets,and the influence of other drugs on the diagnosis was *** patient with alanine aminotransferase(ALT)3 upper limit of normal(ULN)and a calculated R of 6 was diagnosed with possible acute drug-induced hepatocellular *** relationship was considered“highly probable”(score of 9)using the updated RUCAM of ***,the fingerprint similarity between the preparation taken by the patient and a commercially available preparation was 0.99,suggesting that the patient was consuming XLGB Tablets rather than another ***-MS technology and the Agilent Fake TCM-Drugs database were used to investigate the drug,and no chemical additions were *** of the drug for pesticide residues,heavy metals,aflatoxins and other exogenous substances indicated compliance with the content limits of the Chinese ***:In summary,the final diagnosis of XLGB-induced liver injury reached the clinical diagnosis of HIli and was acute severe hepatocellular injury type by the updated RUCAM and ***,this study provides scientif

关键词： chemical analysis compound preparations of traditional chinese medicines integrated evidence chain liver injury Roussel Uclaf Causality Assessment Method Xianling Gubao Tablets

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Photoinduced generation of alkyl and phthalimide nitrogen radicals from N-hydroxyphthalimide esters for the synthesis of benzophenone-type bioisosteres

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Science China Chemistry 2024年第10期67卷 3389-3396页

作者： Fei li Jianyang Dong Huijuan liao Jiayi Dang Xuechen Zhou Yuying Wang Chenya Wang Qin Jiang Gang li Dong Xue Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education and School of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119China

N-Hydroxyphthalimide(NHPI)esters have emerged as powerful sources of alkyl radicals generated by single-electron transfer,but homolysis of NHPI ester to produce an alkyl radical and a phthalimide nitrogen radical is still in its *** this study,we developed a light-induced method for generation of alkyl and phthalimide nitrogen radicals from NHPI esters and subsequent reactions of the radicals with[1.1.1]propellane and aryl aldehydes for rapid generation of bicycle[1.1.1]pentane *** method does not require metals or photosensitizers,features a broad substrate scope(90 examples)and excellent functional group tolerance,and can be used for the functionalization of structurally complex natural products and *** investigations indicate that the reaction involves photoinduced homolytic cleavage of the Cs_(2)CO_(3)-NHPI ester complex to produce alkyl and phthalimide nitrogen radicals and subsequent hydrogen atom transfer between the phthalimide nitrogen radical and the aldehyde to generate an acyl radical.

关键词： phthalimide nitrogen radicals aryl aldehydes hydrogen atom transfer bicycle[1.1.1]pentane ketones bioisosteres

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Optics-driven drone

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Science China(Information Sciences) 2024年第2期67卷 322-324页

作者： Xuelong li Guan HUANG Zhigang WANG Bin ZHAO School of Artificial Intelligence OPtics and Electro Nics (iOPEN)Northwestern Polytechnical University Shanghai Artificial Intelligence Laboratory

In the field of vicinagearth security, low-altitude flying vehicles such as drones play an indispensable role in aerial remote sensing, intelligent search and rescue, etc. [1]. It can be foreseen that the autonomous and intelligent execution of complex tasks by drones is an inevitable trend for future development.

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Organic ligand nanoarchitectonics for BiVO_(4) photoanodes surface passivation and cocatalyst grafting

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Nano Research 2024年第5期17卷 3667-3674页

作者： jingyi lin Xin li Zhiliang Wang Runlu liu Hui Pan Yixin Zhao lingti Kong Yao li Shenmin Zhu lianzhou Wang State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnologythe University of QueenslandQLD 4072Australia School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials Wuhan Institute of TechnologyWuhan 430205China

Bismuth vanadate(BiVO_(4))is a promising photoanode material for efficient photoelectrochemical(PEC)water splitting,whereas its performance is inhibited by detrimental surface *** solve the problem,herein,a low-cost organic molecule 1,3,5-benzenetricarboxylic acid(BTC)is selected for surface passivation of BiVO_(4) photoanodes(BVOs),which also provides bonding sites for Co^(2+)to anchor,resulting in a Co-BTC-BVO *** to its strong coordination with metal ions,BTC not only passivates surface states of BVO,but also provides bonding between BVO and catalytic active sites(Co^(2+))to form a molecular *** study and interfacial charge kinetic investigation reveal that chemical bonding formed at the interface greatly suppresses charge recombination and accelerates charge *** obtained Co-BTC-BVO photoanode exhibits a photocurrent density of 4.82 mA/cm^(2) at 1.23 V *** hydrogen electrode(RHE)and a low onset potential of 0.22 VRHE under AM 1.5 G illumination,which ranks among the best photoanodes coupled with Co-based *** work presents a novel selection of passivation layers and emphasizes the significance of interfacial chemical bonding for the construction of efficient photoanodes.

关键词： bismuth vanadate photoanode water splitting surface passivation bridging ligands

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银耳多糖的结构、功能性及应用研究进展

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食品工业科技 2024年第4期45卷 362-370页

作者：许欢怡李泉岑郑明锋刘斌吕峰曾峰福建农林大学食品科学学院福建福州350002 福建省亚热带果蔬加工工程技术研究中心福建福州350002 国家菌草工程技术研究中心福建福州350002

银耳富含营养素,银耳多糖是其中最主要的功能活性成分,具有多种生物活性。银耳多糖的制备方法多样,对于其结构的研究多集中在分子量、单糖组分和糖苷键类型等方面。本文综述了银耳多糖的制备、结构和抗氧化、抗肿瘤、调节免疫、改善记... 详细信息

银耳富含营养素,银耳多糖是其中最主要的功能活性成分,具有多种生物活性。银耳多糖的制备方法多样,对于其结构的研究多集中在分子量、单糖组分和糖苷键类型等方面。本文综述了银耳多糖的制备、结构和抗氧化、抗肿瘤、调节免疫、改善记忆、抗炎、降血糖和降血脂等生物活性及其在食品、化妆品和医药方面的开发应用。未来需要优化银耳多糖的制备技术,结合现代分析技术解析银耳多糖的高级结构,对银耳多糖的功能及作用机理进行深入的研究,以期为银耳的精深加工与产品研发提供理论参考。

关键词：银耳多糖结构分子量功能性构效关系

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Enhancing photodynamic inactivation via tunning spatial constraint on photosensitizer

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Science China Chemistry 2024年第2期67卷 652-663页

作者： Chong li Minghao Han Ji Gao Shuxian Wang Song-Bo Lu Yaxi li Zhao liu Chen Zhang Zhaojin Wang Fangliang Wang Yuang Sun Chun Loong Ho Kai Wang Yun Shen Kai li Shenzhen Key Laboratory of Smart Healthcare Engineering Guangdong Provincial Key Laboratory of Advanced BiomaterialsDepartment of Biomedical EngineeringSouthern University of Science and TechnologyShenzhen518055China Department of Chemical and Environmental Engineering University of California RiversideRiverside92521USA Department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhen518055China

The critical factor of spatial constraint,provided by the external confinement(e.g.,matrix),is often overlooked during photodynamic inactivation,despite playing a crucial role in determining the molecular photophysical process and subsequent antipathogen ***,as a proof-of-concept model,we employed two types of polymers with varying interaction energies with dopants to investigate the intrinsic relationship between spatial constraint and the essential excited-state behaviors of doped photosensitizer(4-(2-(5-(4-(diphenylamino)phenyl)thiophen-2-yl)ethyl)-1-methylquinolin-1-ium iodine,TPP).Through experimental investigation and theoretical calculations,we found that TPP tends to remain in the excited state for a shorter dwell time under weaker spatial constraints due to less restricted molecular motion in polyurethane(PU) ***,the singlet oxygen(^(1)O_(2)) generated from doped-TPP shows a 9.23-fold enhancement in PU than in the polyvinylchloride(PVC) *** light irradiation,the PU@TPP nanofiber can efficiently eliminate the coronavirus MHV-A59(≥99.9997%) at a 220,000-fold higher concentration than the infected *** antibacterial efficacy has also been demonstrated,with a killing rate of ≥99%.

关键词： photodynamic antibacterial singlet oxygen triphenylamine nanofiber

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Variation in the permafrost active layer over the Tibetan Plateau during 1980–2020

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Atmospheric and Oceanic Science Letters 2024年第5期17卷 34-39页

作者： jinglong Huang Chaofan li Binghao Jia Chujie Gao Ruichao li College of Oceanography Hohai UniversityNanjingChina Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

The active layer,acting as an intermediary of water and heat exchange between permafrost and atmosphere,greatly influences biogeochemical cycles in permafrost areas and is notably sensitive to climate *** the Chinese Meteorological Forcing Dataset to drive the Community Land Model,version 5.0,this study simulates the spatial and temporal characteristics of active layer thickness(ALT)on the Tibetan Plateau(TP)from 1980 to *** show that the ALT,primarily observed in the central and western parts of the TP where there are insufficient station observations,exhibits significant interdecadal changes after *** average thickness on the TP decreases from 2.54 m during 1980–1999 to 2.28 m during 2000–*** change is mainly observed in the western permafrost region,displaying a sharp regional inconsistency compared to the eastern region.A persistent increasing trend of ALT is found in the eastern permafrost region,rather than an interdecadal *** aforementioned changes in ALT are closely tied to the variations in the surrounding atmospheric environment,particularly air ***,the area of the active layer on the TP displays a profound interdecadal change around 2000,arising from the permafrost thawing and *** consistently decreases before 2000 but barely changes after *** regional variation in the permafrost active layer over the TP revealed in this study indicates a complex response of the contemporary climate under global warming.

关键词： Active layer thickness Permafrost Tibetan plateau Climatological characteristics

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γ能谱法测量分析阀门中铀滞留量技术研究

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原子能科学技术 2024年第2期58卷 489-497页

作者：王晶何丽霞邵婕文李育蓉中国原子能科学研究院放射化学研究所北京102413

定量测量工艺设备中的滞留量是核设施核材料测量的技术难点之一,对辐射防护、核材料临界安全和核材料闭合衡算具有重要意义。在核材料工艺生产线上,阀门与管道的连接方式不利于取样,因此,非破坏性分析方法更适合用于开展阀门中滞留量的... 详细信息

定量测量工艺设备中的滞留量是核设施核材料测量的技术难点之一,对辐射防护、核材料临界安全和核材料闭合衡算具有重要意义。在核材料工艺生产线上,阀门与管道的连接方式不利于取样,因此,非破坏性分析方法更适合用于开展阀门中滞留量的测量。本文采用无源效率刻度,针对球阀和蝶阀这两种最常见的阀门,建立了探测器全能峰绝对探测效率分析模型。运用坐标变换方法,实现了阀门分析模型的快速建立。在实验室条件下采用标准点源和铀样品进行了初步验证,铀样品中235 U含量的测量分析结果和标称值的相对偏差小于15%。坐标变换方法可快速准确地建立各种类型阀门的分析模型,为测量分析模型的建立提供了简便易行的解决方案。

关键词：滞留量阀门蒙特卡罗模拟 γ能谱法

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