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Lithium metal anodes: Present and future

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Journal of Energy Chemistry 2020年第9期29卷 145-159,I0005页

作者： Renheng Wang weisheng cui Fulu Chu Feixiang Wu School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060GuangdongChina

Commercial lithium-ion(Li-ion)batteries based on graphite anodes are meeting their bottlenecks that are limited energy *** order to satisfy the large market demands of smaller and lighter rechargeable batteries,high-capacity metallic Li replacing low-specific-capacity graphite enables the higher energy density in next-generation rechargeable Li metal batteries(LMBs).However,Li metal anode has been suffering from dendritic problems,interfacial side reactions,volume change and low Coulombic ***,performance enhancements of Li metal anodes are rather important to realize the high energy density characteristic of metallic *** this review,the annoying Li dendrite growth,unstable reaction interface and practical application issues of Li metal anodes are summarized and detailedly discussed to understand the current challenges concerning Li metal *** overcoming such remaining challenges,the corresponding strategies and recent advances are covered and ***,we discuss future opportunities and perspectives for developing high-performance Li metal anodes.

关键词： Lithium Anode Lithium metal battery Surface protection Li dendrite

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山东诸城地区下白垩统一新类型鸟类足迹

地质论评 2024年第2期70卷 411-416页

作者：张艳霞孙业君陈军崔卫生陈树清王增涛诸城市恐龙文化研究中心山东诸城262200 山东省地质科学研究院济南250013

1931年,Mehl报道的来自Dakota Group的Ignotornis mcconnelli是第一个被广泛接受的中生代鸟类足迹。目前,亚洲、北美洲、欧洲、非洲和南美洲都有白垩纪鸟类足迹的报道,尤其以东亚地区最为丰富。山东诸城张祝河湾恐龙足迹点保存了一枚完... 详细信息

1931年,Mehl报道的来自Dakota Group的Ignotornis mcconnelli是第一个被广泛接受的中生代鸟类足迹。目前,亚洲、北美洲、欧洲、非洲和南美洲都有白垩纪鸟类足迹的报道,尤其以东亚地区最为丰富。山东诸城张祝河湾恐龙足迹点保存了一枚完整的鸟类足迹,笔者等对该鸟类足迹进行了详细描述与对比。研究认为,该鸟类足迹区别于以往发现的鸟类足迹,根据其形态建立了新种:玲珑诸城鸟足迹Zhuchengornipes exquisitus。玲珑诸城鸟足迹造迹者可能为滨鸟类,形成于干旱气候下的滨浅湖环境。

关键词：诸城下白垩统鸟类足迹滨鸟类

Generation characteristics of a metal ion plasma jet in vacuum discharge

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Plasma Science and Technology 2018年第8期20卷 35-41页

作者： Jia TIAN Wenzheng LIU weisheng cui Yongjie GAO School of Electrical Engineering Beijing Jiaotong UniversityBeijing 100044People＇s Republic of China

To improve the performance of a metal ion plasma jet in vacuum discharge, an anode-insulated cone-cylinder electrode with insulating sleeve is proposed in this paper. Discharge characteristics and generation characteristics of plasma of the electrode are investigated, effects of diameter of insulating sleeve, variety of cathode material and length of the insulating sleeve on characteristics of metal ion plasma jet are discussed. Results indicate that a directional and steady plasma jet is formed by using the novel electrode with insulating sleeve under high vacuum conditions. Moreover, the properties of metal ion plasma jet are improved by using the aluminum cathode and thin and long insulating sleeve. The study provides strong support for research of vacuum metal ion plasma thruster and ion implantation technology.

关键词： vacuum-gap discharge metal ion plasma jet generation characteristics anode- insulated cone-cylinder electrode

Influence of non-uniform electric field distribution on the atmospheric pressure air dielectric barrier discharge

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Plasma Science and Technology 2021年第7期23卷 78-84页

作者： weisheng cui Shuai ZHAO Zhengfang QIAN Yiling SUN Mahmoud AL-SALIHI Xiangquan DENG Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094People’s Republic of China

The dielectric barrier discharge(DBD)in air at atmospheric pressure is not suitable for industrial applications due to its randomly distributed discharge *** this paper,the influence of the electric field distribution on the uniformity of DBD is theoretically analyzed and experimentally *** is found that a certain degree of uneven electric field distributions can control the development of electron avalanches and regulate their transition to streamers in the *** discharge phenomena and electrical characteristics prove that an enhanced Townsend discharge can be formed in atmospheric-pressure air with a curved-plate *** spectral analysis further confirms that the gas temperature of the plasma produced by the curved-plate electrode is close to room temperature,which is beneficial for industrial *** paper presents the relationship between the electron avalanche transition and the formation of a uniform DBD,which can provide some references for the development and applications of the DBD in the future.

关键词： dielectric barrier discharge electric field distribution electron avalanche Townsend discharge

Simulation and Analysis of Cascading Faults in Integrated Heat and Electricity Systems Considering Degradation Characteristics

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Energy Engineering 2024年第3期121卷 581-601页

作者： Hang cui Hongbo Ren Qiong Wu Hang Lv Qifen Li weisheng Zhou College of Energy and Mechanical Engineering Shanghai University of Electric PowerShanghai200090China Shanghai Non-Carbon Energy Conversion and Utilization Institute Shanghai200240China College of Policy Sciences Ritsumeikan UniversityKyoto603-8577Japan

Cascading faults have been identified as the primary cause of multiple power outages in recent *** the emergence of integrated energy systems(IES),the conventional approach to analyzing power grid cascading faults is no longer appropriate.A cascading fault analysis method considering multi-energy coupling characteristics is of vital *** this study,an innovative analysis method for cascading faults in integrated heat and electricity systems(IHES)is *** considers the degradation characteristics of transmission and energy supply com-ponents in the system to address the impact of component aging on cascading ***,degradation models for the current carrying capacity of transmission lines,the water carrying capacity and insulation performance of thermal pipelines,as well as the performance of energy supply equipment during aging,are ***,a simulation process for cascading faults in the IHES is *** utilizes an overload-dominated development model to predict the propagation path of cascading faults while also considering network islanding,electric-heating rescheduling,and load *** propagation of cascading faults is reflected in the form of fault ***,the results of cascading faults under different aging levels are analyzed through numerical examples,thereby verifying the effectiveness and rationality of the proposed model and method.

关键词： Cascading fault degradation characteristics integrated heat and electricity system multi-energy flow

Influence of Ti_(3)C_(2)T_(x)(MXene)on the generation of dielectric barrier discharge in air

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Plasma Science and Technology 2021年第11期23卷 66-73页

作者： weisheng cui Qiaolu LIN Hongbo LI Shuai ZHAO Yunge ZHANG Yifan HUANG Shuting FAN Yiling SUN Zhengfang QIAN Renheng WANG Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People's Republic of China Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100094People's Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055People's Republic of China

The formation of homogeneous dielectric barrier discharge(DBD)in air is a key scientific problem and core technical problem to be solved for the application of ***,we report the effect of two-dimensional(2D)nanomaterial Ti_(3)C_(2)T_(x)(Tx=-F,-O and/or-OH)on regulating the electrical discharge *** field emission and weak bound state property of Ti_(3)C_(2)T_(x)can effectively increase the seed electrons and contribute to the generation of atmospheric pressure homogeneous air *** electron avalanche development for the uneven electrode structure is calculated,and the discharge mode transition is *** comparative analyses of discharge phenomena validate the regulation of Ti_(3)C_(2)T_(x)on the discharge characteristics of *** light emission capture and the voltage and current waveforms verify that the transition of Townsend discharge to streamer discharge is effectively *** optical emission spectra are used to characterize the plasma and confirm that it is in a non-equilibrium state and the gas temperature is at room *** is the first exploration of Ti_(3)C_(2)T_(x)on the regulation of electrical discharge characteristics as far as we *** work proves the feasibility of Ti_(3)C_(2)T_(x)as a source of seed electrons to form homogeneous DBD,establishing a preliminary foundation for promoting the application of atmospheric pressure non-equilibrium plasma.

关键词： atmospheric pressure air plasma Townsend discharge seed electron Ti_(3)C_(2)T_(x)

Molecular characterization and structure basis of a malonyltransferase with both substrate promiscuity and catalytic regiospecificity from Cistanche tubulosa

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2333-2348页

作者： Xiao Liu Yuyu Liu Xiping Xu Wenqian Huang Yaru Yan Yingxia Wang weisheng Tian Ting Mo Xiaoxue cui Jun Li She-Po Shi Pengfei Tu Modern Research Center for Traditional Chinese Medicine Beijing Research Institute of Chinese MedicineBeijing University of Chinese MedicineBeijing 100029China Modern Research Center for Traditional Chinese Medicine School of Chinese Materia MedicaBeijing University of Chinese MedicineBeijing 100029China

Enzymatic malonylation of natural glycosides provides a promising alternative method for drug-like malonylated glycosides ***,the catalytic potential and structural basis of plant malonyltransferase are far from being fully *** work identified a new malonyltransferase CtMaT1 from Cistanche *** displayed unprecedented mono-and/or di-malonylation activity toward diverse glucosides with different aglycons.A“one-pot”system by CtMaT1 and a malonyl-CoA synthetase was established to biosynthesize nine new malonylated *** investigations revealed that CtMaT1 possesses an adequately spacious acyl-acceptor pocket capable of accommodating diverse ***,it recognizes malonyl-CoA through strong electrotactic and hydrogen ***/MM calculation revealed the H167-mediated SN2 reaction mechanism of CtMaT1,while dynamic simulations detected the formation of stable hydrogen bonds between the glucose-6-OH group and H167,resulting in its high malonylation *** energy profiles of two isomeric glycosides highlighted lower reaction energy barriers towards glucoside substrates,emphasizing CtMaT1's preference for ***,a mutant CtMaT1H36A with notably increased di-malonylation activity was *** underlying molecular mechanism was illuminated through MM/GBSA binding free energy *** study significantly advances the understanding of plant acyltransferases from both functional and protein structural perspectives,while also providing a versatile tool for enzymatic malonylation applications in pharmacology.

关键词： Plant acyltransferase Malonyltransferase Malonylated glycosides Enzymatic catalysis Enzyme promiscuity

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轿车车门密封条结构的数值分析与改进设计

汽车工程 2013年第2期35卷 193-196页

作者：赵健崔巍升金涛郑燕明浙江大学化工机械研究所杭州310027 浙江仙通橡塑股份有限公司台州317300

运用非线性连续介质力学理论和有限元分析方法,评估某轿车车门密封条的插拔特性。采用***建立密封条结构模型并进行分析,求得密封条插拔力。分析结果与试验结果的误差在合理范围内,表明了数值模拟方法可以有效求解密封条插拔过程中的高... 详细信息

运用非线性连续介质力学理论和有限元分析方法,评估某轿车车门密封条的插拔特性。采用***建立密封条结构模型并进行分析,求得密封条插拔力。分析结果与试验结果的误差在合理范围内,表明了数值模拟方法可以有效求解密封条插拔过程中的高度非线性问题。但两种结果均超出插入力设计值,对密封条结构进行改进后满足了该密封条产品的设计要求。

关键词：车门密封条数值分析改进设计

马克思主义理论的启蒙逻辑:本体、方法与价值

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学术研究 2019年第5期 37-42页

作者：蔡臻臻崔卫生华南师范大学生命科学学院华南师范大学马克思主义学院华南师范大学国际商学院华南师范大学教育科学学院广东广州510631

马克思主义呈现两大理论形态,一是作为政治革命理论的马克思主义,是关于无产阶级以及人类解放的条件的学说,其任务在于推动无产阶级领导的政治革命;二是作为启蒙思想的马克思主义,是关于每个人自由而全面发展的目标的学说,其任务在于通... 详细信息

马克思主义呈现两大理论形态,一是作为政治革命理论的马克思主义,是关于无产阶级以及人类解放的条件的学说,其任务在于推动无产阶级领导的政治革命;二是作为启蒙思想的马克思主义,是关于每个人自由而全面发展的目标的学说,其任务在于通过思想解放运动,推动全人类的解放以及每个人的自由而全面的发展。马克思主义理论是新一轮思想启蒙运动的领导者,其历史使命就是继续启蒙:经过思想启蒙的社会个体,能够摆脱康德所说的“不成熟”状态,从自由个体走向历史主体,能够承担起推动每个人自由而全面的发展的历史使命。

关键词：马克思主义启蒙批判实践