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Janus Quasi‑Solid Electrolyte Membranes with Asymmetric Porous Structure for High‑Performance Lithium‑Metal Batteries

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Nano-Micro Letters 2024年第6期16卷 221-232页

作者： Zerui Chen Wei Zhao Qian Liu Yifei Xu Qinghe Wang Jinmin Lin Hao bin wu Institute for Composites Science Innovation(InCSI)and State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Quasi-solid electrolytes(QSEs)based on nanoporous materials are promising candidates to construct high-performance Limetal batteries(LMBs).However,simultaneously boosting the ionic conductivity(σ)and lithium-ion transference number(t^(+)) of liquid electrolyte confined in porous matrix remains ***,we report a novel Janus MOFLi/MSLi QSEs with asymmetric porous structure to inherit the benefits of both mesoporous and microporous *** Janus QSE composed of mesoporous silica and microporous MOF exhibits a neat Li^(+) conductivity of 1.5.10^(–4)S cm^(−1) with t^(+) of 0.71.A partially de-solvated structure and preference distribution of Li^(+)near the Lewis base O atoms were depicted by MD ***,the nanoporous structure enabled efficient ion flux regulation,promoting the homogenous deposition of Li^(+).When incorporated in Li||Cu cells,the MOFLi/MSLi QSEs demonstrated a high Coulombic efficiency of 98.1%,surpassing that of liquid electrolytes(96.3%).Additionally,NCM 622||Li batteries equipped with MOFLi/MSLi QSEs exhibited promising rate performance and could operate stably for over 200 cycles at 1 *** results highlight the potential of Janus MOFLi/MSLi QSEs as promising candidates for next-generation LMBs.

关键词： Metal-organic frameworks Mesoporous silicas Quasi-solid electrolytes Janus structure Lithium-metal battery

Upconverting and downshifting circularly polarized luminescence in a superstructural helix

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Science China Chemistry 2024年第8期67卷 2571-2577页

作者： Honghan Ji bin wu Enquan Tian Chao Ren Xue Jin Liangliang Zhu Pengfei Duan CAS Key Laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology(NCNST)Beijing 100190China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200438China University of Chinese Academy of Sciences Beijing 101408China

The modulation of circularly polarized luminescence(CPL) has become an increasingly prominent area of research. In this study,we propose a unique “one-excitation-to-three-emissions” CPL system through the co-assembly of an upconversion system,incorporating one sensitizer(Pt(II) mesotetraphenyl tetrabenzoporphyrine, Pt TPBP) and two annihilators(R/S-DPA and R/SBDP) within liquid crystals. The chiral nature of the annihilators induces a transformation of the nematic liquid crystal into chiral nematic liquid crystals(N*LC), establishing an excellent chiral matrix. Upon the incorporation of the sensitizer Pt TPBP and subsequent excitation at 635 nm, the system demonstrates two independent triplet–triplet annihilation photon upconversion(TTA-UC) with the emission in blue and yellow, aided by thermally activated triplet–triplet energy transfer(TTET). This is accompanied by the simultaneous generation of upconverting circularly polarized luminescence(UC-CPL) and downshifting near-infrared circularly polarized luminescence(DS-CPL) originating from the residual luminescence of Pt TPBP. Remarkably,fine-tuning the ratio between the two annihilators allows the TTA-UC system to exhibit multicolor CPL emission with an amplified luminescence dissymmetry factor(glum, reaching up to 0.6). Our study unveils a previously unreported “one-excitation-to-three-emissions” system and provides a versatile strategy for modulating CPL emissions, surpassing conventional methodologies.

关键词： circularly polarized luminescence triplet–triplet annihilation upconversion near-infrared emission chiral nematic liquid crystal luminescence dissymmetry factor

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Electrocatalytic CO_(2) reduction to C_(2)H_(4): From lab to fab

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Journal of Energy Chemistry 2024年第3期90卷 540-564,I0012页

作者： Zeyu Guo Fabao Yang Xiaotong Li Huiwen Zhu Hainam Do Kam Loon Fow Jonathan D.Hirst Tao wu Qiulin Ye Yaqi Peng Hao bin wu Angjian wu Mengxia Xu Department of Chemical and Environmental Engineering and New Materials InstituteUniversity of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina Key Laboratory of Carbonaceous Waste Processing and Process Intensification of Zhejiang Province University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina Nottingham Ningbo China Beacons of Excellence Research and Innovation Institute University of Nottingham Ningbo ChinaNingbo 315100ZhejiangChina State Key Laboratory of Clean Energy Utilization Department of Energy EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina Institute for Composites Science Innovation(InCSI)and State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina School of Chemistry University of NottinghamUniversity ParkNottingham NG72RDUK Baima Lake Laboratory Hangzhou 310053ZhejiangChina

The global concerns of energy crisis and climate change,primarily caused by carbon dioxide(CO_(2)),are of utmost ***,the electrocatalytic CO_(2) reduction reaction(CO_(2)RR) to high value-added multi-carbon(C_(2+)) products driven by renewable electricity has emerged as a highly promising solution to alleviate energy shortages and achieve carbon *** these C_(2+) products,ethylene(C_(2)H_(4))holds particular importance in the petrochemical ***,this review aims to establish a connection between the fundamentals of electrocatalytic CO_(2) reduction reaction to ethylene(CO_(2)RRto-C_(2)H_(4)) in laboratory-scale research(lab) and its potential applications in industrial-level fabrication(fab).The review begins by summarizing the fundamental aspects,including the design strategies of high-performance Cu-based electrocatalysts and advanced electrolyzer ***,innovative and value-added techniques are presented to address the inherent challenges encountered during the implementations of CO_(2)RR-to-C_(2)H_(4) in industrial ***,case studies of the technoeconomic analysis of the CO_(2)RR-to-C_(2)H_(4) process are discussed,taking into factors such as costeffectiveness,scalability,and market *** review concludes by outlining the perspectives and challenges associated with scaling up the CO_(2)RR-to-C_(2)H_(4) *** insights presented in this review are expected to make a valuable contribution in advancing the CO_(2)RR-to-C_(2)H_(4) process from lab to fab.

关键词： CO_(2) electroreduction reaction Ethylene Gas diffusion electrode Machine learning Density functional theory Techno-economic analysis

Design and commissioning of a wideband RF system for CSNS-Ⅱ rapid-cycling synchrotron

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Nuclear Science and Techniques 2024年第1期35卷 35-44页

作者： Jian wu Xiang Li bin wu Chun-Lin Zhang Yang Liu Wei Long Xiao Li University of Chinese Academy of Sciences Beijing 100049China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China

The China Spallation Neutron Source(CSNS) upgrade project(CSNS-Ⅱ) aims to enhance the beam power from 100 to 500 kW. A dual-harmonic accelerating method has been adopted to alleviate the stronger space-charge effect in rapid-cycling synchrotrons owing to the increased beam intensity. To satisfy the requirements of dual-harmonic acceleration, a new radiofrequency(RF) system based on a magnetic alloy-loaded cavity is proposed. This paper presents design considerations and experimental results regarding the performance evaluation of the proposed RF system through high-power tests and beam commissioning. The test results demonstrate that the RF system satisfies the desired specifications and affords significant benefits for CSNS-Ⅱ.

关键词： Dual-harmonic acceleration Magnetic alloy-loaded cavity RF system

Effect of La on the Corrosion Behavior and Mechanism of 3Ni Weathering Steel in a Simulated Marine Atmospheric Environment

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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 308-324页

作者： Gang Niu Rui Yuan R.D.K.Misra Na Gong Zhi-Hui Zhang Hao-Xiu Chen Hui-bin wu Cheng-Jia Shang Xin-Ping Mao Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing100083China Laboratory for Excellence in Advanced Steel Research Department of MetallurgicalMaterials and Biomedical EngineeringUniversity of Texas at El PasoEl PasoTX79968USA Institute of Materials Research and Engineering Agency for ScienceTechnologyand ResearchSingapore138634Singapore Department of Materials Science and Engineering University of TorontoTorontoONM5S 3E4Canada

The corrosion behavior and mechanism of 3Ni weathering steel in a simulated oceanic atmospheric environment are investigated in order to comprehend the impacts of La,as determined through electrochemical analysis and rust layer *** results of this study demonstrate that the addition of La enhances the corrosion resistance of 3Ni weathering steel in the marine atmospheric environment,thereby reducing the corrosion rate and improving the protection of the rust *** influence of La on corrosion resistance can be attributed to two primary ***,La functions as a grain refiner,minimizing the potential difference of the micro-regions on the substrate surface,thereby significantly reducing the corrosion of bare steel in the marine ***,La inhibits the process of Fe_(3)O_(4) oxidation back toγ-FeOOH during corrosion at the local site,thus decreasing the formation ofγ-FeOOH and enhancing the charge transfer *** research work may serve as a reference for expanding the application of rare earth elements in the field of weathering steel.

关键词： Weathering steel Rare earth Rust layer Corrosion behavior Corrosion resistance

渤海湾盆地辽东-渤东凸起构造带地质结构与形成演化

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海洋地质前沿 2024年第7期40卷 25-35页

作者：吴斌中海油研究总院有限责任公司北京100028

为了明确渤海湾盆地辽东-渤东凸起构造带的形成演化过程与油气的关系,结合研究区最新三维地震数据,详细分析了辽东-渤东凸起构造带的地质结构特征和隆升时间,对比了构造变形特征,确定了隆升时间的差异性,在此基础上建立了辽东-渤东凸起... 详细信息

为了明确渤海湾盆地辽东-渤东凸起构造带的形成演化过程与油气的关系,结合研究区最新三维地震数据,详细分析了辽东-渤东凸起构造带的地质结构特征和隆升时间,对比了构造变形特征,确定了隆升时间的差异性,在此基础上建立了辽东-渤东凸起构造带的形成演化模式。研究认为,渤东低凸起受控于伸展断层,辽东凸起受控于早期伸展断层和晚期走滑断层,构造带内除辽东断层以外,各主干断层均在孔店组—沙四段沉积期开始活动,峰值期出现在沙三段和东营组沉积期,馆陶组沉积后断层活动变弱。辽东-渤东凸起构造带从南向北逐渐抬升:渤东低凸起在沙四段沉积末期抬升,辽东凸起南段在沙三段沉积末期抬升,辽东凸起北段在东三段沉积末期抬升。构造演化分为孔店组-沙四段沉积期、沙三段沉积期、沙一二段沉积期、东三段沉积期、东营组沉积末期和现今等6个阶段。构造演化与油气运聚成藏密切相关,辽东-渤东凸起构造带的形成时间早于周缘生烃凹陷主要生、排烃期,有利于油气在凸起带附近聚集。渤东低凸起由伸展断层控制,油气主要在凸起区聚集成藏;辽东凸起由伸展断层与走滑断层共同控制,油气主要在斜坡区聚集成藏。

关键词：渤海湾盆地辽东-渤东凸起构造带地质结构隆升时间构造演化

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《周易·杂卦》释例

周易研究 2024年第1期 61-70,79页

作者：吴斌斌华东师范大学中文系上海200241

《杂卦》之名已经揭示了其相对于《序卦》会含有更复杂的编卦体例。以往诸家承袭解读《序卦》的思路,单一化地理解《杂卦》的编次规律,这是不正确的。《杂卦》的体例,是以卦体、卦义为元素,次第展示“体义皆对”“体对义不对”“体不对... 详细信息

《杂卦》之名已经揭示了其相对于《序卦》会含有更复杂的编卦体例。以往诸家承袭解读《序卦》的思路,单一化地理解《杂卦》的编次规律,这是不正确的。《杂卦》的体例,是以卦体、卦义为元素,次第展示“体义皆对”“体对义不对”“体不对义对”三种类型的组合。唯大过、夬二卦例外,这种“为例不纯”的现象同《序卦》的咸、未济一样,皆是为了表示某种框架、大义。大过训颠,为颠倒之始;次姤,为阴长阳消之初;末夬,为阴尽阳复之几。夬决则纯乾,拨乱反正,以示天道之常、乾坤不息之理。变而能济,济而复全,构成了《杂卦》义理的辩证性。过去学界对于《杂卦》卦次规律性的理解多有不确,根本原因在于对文本的关注不够,大多仅据卦次展开论述,而忽略了文本的文字部分。

关键词：《周易》《杂卦》《序卦》制序经权变易

Optimization of water-urban-agricultural-ecological land use pattern:A case study of Guanzhong Basin in the southern Loess Plateau of Shaanxi Province,China

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China Geology 2024年第3期7卷 480-493页

作者： Sai Wang bin wu Hai-xue Li Min-min Zhao Lei Yuan Xi wu Tao Ma Fu-cheng Li Shuang-bao Han Center for Hydrogeology and Environmental Geology Survey China Geological SurveyMinistry of Natural ResourcesTianjin 300304China Center for Groundwater Exploration and Development Engineering Research China Geological SurveyMinistry of Natural ResourcesTianjin 300304China School of Environmental Studies China University of GeosciencesWuhan430078China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic ScienceChina University of GeosciencesWuhan430078China

Extensive land use will cause many environmental *** is an urgent task to improve land use efficiency and optimize land use *** recent years,due to the flow decrease,the Guanzhong Basin in Shaanxi Province is confronted with the problem of insufficient water resources *** on the Coupled Ground-Water and Surface-Water Flow Model(GSFLOW),this paper evaluates the response of water resources in the basin to changes in land use patterns,optimizes the land use pattern,improves the ecological and economic benefits,and the efficiency of various spatial development,providing a reference for ecological protection and high-quality development of the Yellow River *** research shows that the land use pattern in the Guanzhong Basin should be further *** the condition of considering ecological and economic development,the percentage change of the optimum area of farmland,forest,grassland,water area,and urban area compared with the current land use area ratio is+2.3,+2.4,-6.1,+0.2,and+1.6,*** economic and ecological value of land increases by14.1%and 3.1%,respectively,and the number of water resources can increase by 2.5%.

关键词： Coupled Ground-Water and Surface-Water Flow Model(GSFLOW) Land use patterns Water resources optimization Ecological and economic benefits Coupling model Hydrological environmental engineering Guanzhong Basin Southern Loess Plateau Yellow River basin

Intracranial hypertension as the primary symptom of malignant melanoma:A case report

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World Journal of Clinical Cases 2024年第21期12卷 4836-4841页

作者： Hai-Ting Xie Ding-Hao An Duo-bin wu Department of Neurology Southern Medical UniversityGuangzhou 510282Guangdong ProvinceChina Department of Neurology Nanjing Drum Tower HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeNanjing 210008Jiangsu ProvinceChina Department of Neurology Zhujiang Hospital of Southern Medical UniversityGuangzhou 510282Guangdong ProvinceChina

BACKGROUND The etiological diagnosis of intracranial hypertension is quite complicated but important in clinical *** common causes are craniocerebral injury,intracranial space-occupying lesion,subarachnoid hemorrhage,and *** a patient presents with intracranial hypertension,the common causes are to be considered first so that other causes would be *** the morbidity lower than 9%,neuromelanin is very *** symp-toms include nerve damage symptoms,epilepsy,psychiatric symptoms,and cognitive *** SUMMARY We present a patient with melanoma which manifested with isolated intracranial hypertension without any other neurological signs.A 22-year-old male had repeated nausea and vomiting for 2 mo with Babinski sign(+)on both sides,nuchal rigidity,and subarachnoid *** had been diagnosed with melanoma and was given surgery and whole-brain ***,the patient died 2 mo *** Malignant melanoma should be taken into consideration in the differential diagnosis of intracranial hypertension.

关键词： Intracranial hypertension Diagnosis Melanoma Neuromelanin Case report