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Journal of Energy Chemistry 2024年第6期93卷 32-45,I0002页

作者： Zhixiang cheng chengdong Wang wenxin Mei Peng Qin Junyuan Li Qingsong Wang State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026AnhuiChina

Lithium iron phosphate batteries have been increasingly utilized in recent years because their higher safety performance can improve the increasing trend of recurring thermal runaway ***,the safety performance and mechanism of high-capacity lithium iron phosphate batteries under internal short-circuit challenges remain to be *** work analyzes the thermal runaway evolution of high-capacity LiFePO_(4) batteries under different internal heat transfer modes,which are controlled by different penetration *** penetration cases involving complete penetration and incomplete penetration were detected during the test,and two modes were performed incorporating nails that either remained or were removed after penetration to comprehensively reveal the thermal runaway mechanism.A theoretical model of microcircuits and internal heat conduction is also *** results indicated three thermal runaway evolution processes for high-capacity batteries,which corresponded to the experimental results of thermal equilibrium,single thermal runaway,and two thermal runaway *** difference in heat distribution in the three phenomena is determined based on the microstructure and material structure near the *** controlling the heat dissipation conditions,the time interval between two thermal runaway events can be delayed from 558 to 1417 s,accompanied by a decrease in the concentration of in-situ gas production during the second thermal runaway event.

关键词： Lithium-ion battery safety Micro short-circuit cell Heat transfer modes Internal short circuit Nail-penetration test

Electrical tree degradation of MgO/epoxy resin composites at different voltage frequencies

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High Voltage 2024年第3期9卷 581-590页

作者： Yunxiao Zhang wenxin Lin Yuanxiang Zhou Weiwei Xing Jiayu cheng Chenyuan Teng College of Electrical Engineering and Automation Fuzhou UniversityFujian Key Laboratory of New Energy Generation and Power ConversionFuzhouChina State Key Laboratory of Control and Simulation of Power Systems and Generation Equipment Department of Electrical EngineeringTsinghua UniversityBeijingChina

Electrical tree degradation is one of the main causes of insulation failure in high-frequency *** tree degradation is studied on pure epoxy resin(EP)and MgO/EP composites at frequencies ranging from 50 Hz to 130 *** results show that the tree initiation voltage of EP decreases,while the growth rate and the expansion coefficient increase with ***,the bubble phenomenon at high frequencies in EP composites is *** with trap distribution character-istics within the material,the intrinsic mechanism of epoxy composites to inhibit the growth of the electrical tree at different frequencies is *** can be concluded that more deep traps and blocking effect are introduced by doping nano-MgO into EP bulks,which can improve the electrical tree resistance performance of EP composites in a wide frequency range.

关键词： composites tree Electrical

Distributed Virtual Inertia Based Control of Multiple Photovoltaic Systems in Autonomous Microgrid

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IEEE/CAA Journal of Automatica Sinica 2017年第3期4卷 512-519页

作者： Won-Sang Im cheng Wang wenxin Liu Liming Liu Jang-Mok Kim Lehigh University IEEE ABB Inc. Pusan National University

The large inertia of a traditional power system slows down system's frequency response but also allows decent time for controlling the *** an autonomous renewable microgrid usually has much smaller inertia,the control system must be very fast and accurate to fight against the small inertia and *** reduce the demanding requirements on control,this paper proposes to increase the inertia of photovoltaic(PV) system through inertia *** inertia emulation is realized by controlling the charging/discharging of the direct current(DC)-link capacitor over a certain range and adjusting the PV generation when it is feasible and/or *** well designing the inertia,the DC-link capacitor parameters and the control range,the negative impact of inertia emulation on energy efficiency can be *** proposed algorithm can be integrated with distributed generation setting algorithms to improve dynamic performance and lower implementation *** studies demonstrate the effectiveness of the proposed solution.

关键词： Inertia emulation microgrid photovoltaic system renewable energy voltage source converter

Microstructure,Mechanical Properties and Texture Evolution of Mg-Al-Zn-La-Gd-Y Magnesium Alloy by Hot Extrusion and Multi-Pass Rolling

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Acta Metallurgica Sinica(English Letters) 2020年第10期33卷 1359-1368页

作者： Qiyu Liao wenxin Hu Qichi Le Xingrui Chen Ke Hu Chunlong cheng chenglu Hu Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China Baotou Research Institute of Rare Earths Baotou 014000China

A high-ductility Mg-8.10Al-0.42Zn-0.51Mn-1.52La-1.10Gd-0.86 Y(wt%)alloy was developed by hot extrusion and multi-rolling *** between microstructure,mechanical properties and texture evolution of the extruded and rolled alloy were *** rolling process had significant effect on grain refinement of the extruded *** grain size reduced from 12.3 to 4.9μm with the increasing rolling *** the increase in rolling pass,the proportion of dynamic recrystallized(DRXed)grains increases due to particle-stimulated nucleation,grain boundary nucleation and twin induced *** the process of multiple rolling,the basal pole gradually tilted from normal direction to transverse direction due to the asymmetric deformation and irregular grain deformation,resulting in the weakening of the base *** results showed that grain refinement and texture weakening were the main reasons for the good ductility of the alloy.

关键词： Extrusion Multi-rolling Grain refinement Texture evolution Mechanical properties

Understanding on corrosion mechanism of oxidized AZW800 alloy in 3.5 wt%NaCl solution

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Journal of Magnesium and Alloys 2023年第5期11卷 1740-1753页

作者： Chunlong cheng Qichi Le Liang Chen wenxin Hu Tong Wang Baosong Zhu Xiong Zhou Key Laboratory of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China Baotou Research Institute of Rare Earths Baotou 014000China

Magnesium alloys are more widely used at higher ***,it is not well known whether oxide layer,produced at high temperature,could show corrosion ***,the corrosion behaviors of oxidized AZW800 alloy were investigated by hydrogen evolution and electrochemical measurements to evaluate effect of oxide layer on corrosion *** results showed that corrosion of removed oxide layer AZW800 alloy showed characteristic of localized corrosion,leaving randomly bulky *** reserved oxide layer AZW800 alloy exhibited a relatively uniform *** results indicated that oxide layer could hinder corrosion of oxidized AZW800 alloy in the initial period of *** subsequently,aggravated corrosion would occur owing to defects of oxide layer and less protective products ***,present of oxide layer eliminated micro-galvanic couple on alloy *** synergistic effect of elimination of micro-galvanic couple on alloy surface and alkalization effect transforms localized corrosion into relatively uniform corrosion of alloys.

关键词： AZW800 Corrosion behavior Oxide layer EIS

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竹叶抗氧化物在双汇西式肉制品中的应用研究

中国食品学报 2006年第3期6卷 111-114页

作者：楼鼎鼎戚炯炯张英吴晓琴程文新藏永军浙江大学生物系统工程和食品科学学院食品与营养系杭州310029 双汇实业集团有限公司技术中心漯河462000

探索了竹叶抗氧化物(AOB)在双汇西式肉制品——牛肉王(高温产品)和富乐火腿(低温产品)中的应用效果,整个添加过程直接在生产线完成,样品制备量分别为400kg和200kg。过氧化值和丙二醛的测定结果表明:添加0.01%～0.03%的AOB能显著增强产... 详细信息

探索了竹叶抗氧化物(AOB)在双汇西式肉制品——牛肉王(高温产品)和富乐火腿(低温产品)中的应用效果,整个添加过程直接在生产线完成,样品制备量分别为400kg和200kg。过氧化值和丙二醛的测定结果表明:添加0.01%～0.03%的AOB能显著增强产品的抗氧化性能;色差分析、质构测定、综合感官评定的指标显示:添加适当比例的AOB对产品原有的色泽、风味和口感无不良影响,在一定程度上还能增加产品的保水性。亚硝酸盐测定结果显示:添加AOB能有效降低制品中的亚硝酸残留量,并呈显著的量效关系,因此AOB是一种理想的、适用于肉制品的天然多功能食品添加剂。

关键词：竹叶抗氧化物西式肉制品天然多功能食品添加剂

Electrochemical impedance spectroscopy analysis to accelerate electrocatalytic system innovation

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Science China Chemistry 2024年第12期67卷 3964-3975页

作者： Hanbing Zhu Yinghuan Liu wenxin Guo Jinyu Zheng Yao Zheng Serhiy Cherevko cheng Tang Qiang Zhang Tsinghua Center for Green Chemical Engineering Electrification(CCEE) Department of Chemical EngineeringTsinghua UniversityBeijing 100084China Beijing Institute of Smart Energy Beijing 102209China Sinopec Research Institute of Petroleum Processing Co.Ltd. Beijing 100083China School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia Forschungszentrum Julich GmbH Helmholtz Institute Erlangen-Nurnberg for Renewable Energy(IET-2)91058 ErlangenGermany

Electrochemical impedance spectroscopy(EIS)is a well-established non-destructive characterization technique for assessing the efficacy of electrochemical energy storage and conversion *** systems based on proton exchange membrane(PEM),including PEM fuel cells and PEM water electrolyzers,play a crucial role in renewable energy conversion through electricity–hydrogen ***,along with its derived analysis methods—equivalent circuit model(ECM),distribution of relaxation time(DRT),and dynamic EIS(DEIS),is widely utilized to extract valuable kinetics and impedance *** acquired information affords critical insights into processes such as mass transfer,charge transfer,and proton transfer within PEM *** mini review surveys the role of EIS in optimizing components and investigating operational conditions to enhance the efficiency of PEM *** addition,it encapsulates the principles and applications of EIS-based methods like DRT and DEIS,highlighting their potential in the practical application of PEM systems.

关键词： electrochemical impedance spectroscopy distribution of relaxation time proton exchange membrane water electrolyzers reaction kinetics charge transfer

Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material

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Epigenetic strategies synergize with PD-L1/PD-1 targeted cancer immunotherapies to enhance antitumor responses

Defence Technology 2025年第1期 304页

作者： Hang Zhou Hujun Li Zhen Wang Dongming Yan wenxin Wang Guokai Zhang Zirui cheng Song Sun Mingyang Wang

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Acta Pharmaceutica Sinica B 2020年第5期10卷 723-733页

作者： Xi Chen Xiaohui Pan wenxin Zhang Hongjie Guo Shuyuan cheng Qiaojun He Bo Yang Ling Ding Zhejiang Province Key Laboratory of Anti-Cancer Drug Research Institute of Pharmacology and ToxicologyCollege of Pharmaceutical SciencesZhejiang UniversityHangzhou 310058China

Immunotherapy strategies targeting the programmed cell death ligand 1(PD-L1)/programmed cell death 1(PD-1)pathway in clinical treatments have achieved remarkable success in treating multiple types of ***,owing to the heterogeneity of tumors and individual immune systems,PD-L1/PD-1 blockade still shows slow response rates in controlling malignancies in many *** evidence has shown that an effective response to anti-PD-Ll/anti-PD-1 therapy requires establishing an integrated immune *** in any step of the immune cycle is one of the most important causes of immunotherapy *** in the immune cycle can be restored by epigenetic modification,including reprogramming the environment of tumor-associated immunity,eliciting an immune response by increasing the presentation of tumor antigens,and by regulating T cell trafficking and ***,a rational combination of PD-L1/PD-1 blockade and epigenetic agents may offer great potential to retrain the immune system and to improve clinical outcomes of checkpoint blockade therapy.

关键词： Epigenetic regulation Immune cycle PD-L1PD-1 blockade Cancer Immunotherapy

Gap engineering of sandwich plasmonic gap nanostructures for boosting plasmon-enhanced electrocatalysis

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Nano Research 2023年第7期16卷 8961-8969页

作者： Lu cheng Fengxia Wu Yu Tian Xiali Lv Fenghua Li Guobao Xu Hsien-Yi Hsu Yongjun Zhang wenxin Niu State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Yanshan Branch of Beijing Chemical Research Institute SinopecBeijing 102500China University of Science and Technology of China Hefei 230026Chin a 4 School of Energy and Environment Department of Materials Science and EngineeringCity University of Hong KongKowloon TongHong Kong 999077China Shenzhen Research Institute of City University of Hong Kong Shenzhen 518057China Key Laboratory of Functional Polymer Materials and State Key Laboratory of Medicinal Chemical Biology Institute of Polymer ChemistryCollege of ChemistryNankai UniversityTianjin 300071China

Plasmonic catalysis is emerging as a dynamic field in heterogeneous catalysis and holds great promise for the efficient utilization of solar *** to the development of plasmonic catalysis is the design of efficient plasmonic *** this report,plasmonic gap nanostructures(PGNs)on the basis of Au@poly(o-phenylenediamine)(POPD)@Pd sandwich nanostructures are synthesized as plasmonic nanocatalysts by an in-situ reduction synthetic strategy,which allows for the precise engineering of the POPD gap size between plasmonic Au and catalytic Pd *** introduction of conducting POPD nanogap in PGNs not only effectively enhances their light harvesting capability,but also provides an effective charge transfer channel for harnessing the photogenerated hot charge *** this respect,distinct gap-dependent performances in plasmon-enhanced electrocatalysis of ethanol oxidation reactions(EOR)are demonstrated with the PGN nanocatalysts and over 2.5 folds of enhancement can be achieved.A volcano plot is derived to describe the relationship between the catalytic activities and gap size of the PGN nanocatalysts,which is well explained by the interplay of their light harvesting and charge transport *** results highlight the importance of gap engineering in PGNs for plasmonic catalysis and offer the promise of developing efficient plasmonic nanocatalysts for other heterogeneous catalytic reactions.

关键词： plasmonic gap nanostructures electrocatalysis ethanol oxidation reactions light harvesting charge transport