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Liquid metal in prohibiting polysulfides shuttling in metal sulfides anode for sodium-ion batteries

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Journal of Energy Chemistry 2024年第9期96卷 559-567页

作者： Xiaobo Zheng xinwei guan Xuan Cheng Xiaoning Li Yang Fu Yitong Li Zhi Zheng Weikong Pang Xun Xu Peng Li Tianyi Ma Institute for Superconducting&Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongWollongongNSW 2522Australia School of Science RMIT UniversityMelbourneVIC 3000Australia CSIRO Manufacturing ClaytonVIC 3168Australia

Metal sulfides are a class of promising anode materials for sodium-ion batteries(SIBs)owing to their high theoretical specific ***,the reactant products(polysulfides)could dissolve into electrolyte,shuttle across separator,and react with sodium anode,leading to severe capacity loss and safety ***,for the first time,gallium(Ga)-based liquid metal(LM)alloy is incorporated with MoS_(2)nanosheets to work as an anode in *** electron-rich,ultrahigh electrical conductivity,and self-healing properties of LM endow the heterostructured MoS_(2)-LM with highly improved conductivity and electrode ***,LM is demonstrated to have excellent capability for the adsorption of polysulfides(e.g.,Na_(2)S,Na_(2)S_(6),and S_(8))and subsequent catalytic conversion of Na_(2)***,the MoS_(2)-LM electrode exhibits superior ion diffusion kinetics and long cycling performance in SIBs and even in lithium/potassium-ion battery(LIB/PIB)systems,far better than those electrodes with conventional binders(polyvinylidene difluoride(PVDF)and sodium carboxymethyl cellulose(CMC)).This work provides a unique material design concept based on Ga-based liquid metal alloy for metal sulfide anodes in rechargeable battery systems and beyond.

关键词： GalnSn liquid metal alloy MoS_(2) Polysulfides shuttle effects Catalytic conversion Sodium-ion batteries

Emerging Transistor Applications Enabled by Halide Perovskites

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Accounts of Materials Research 2022年第1期3卷 8-20页

作者： Feng Li Weili Yu xinwei guan Tom Wu School of Physics ACMMNano InstituteThe University of SydneySydneyNSW 2006Australia Guo Photonics Laboratory Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China School of Materials Science and Engineering UNSW SydneySydneyNSW 2052Australia

CONSPECTUS:Halide perovskites have attracted considerable attention as emerging semiconductors because of their excellent optical and electronic properties,low cost,and facile processing,which enable their applications in high-efficiency energyconversion *** photovoltaics,perovskites have been employed as active materials in a myriad of optoelectronic applications,including photodetectors,light-emitting diodes,and ***,these materials have also been deemed to be promising candidates for multiple-function electronic applications owing to their unique combinations of merits,particularly ambipolar characteristics,high carrier mobilities,and high electroluminescence ***,this burgeoning research field beyond the energy and optoelectronic domains has attracted a lot of interest and involves halide perovskites with a wide range of structures and ***,the low stability and ion-migration issues of these materials are still major challenges that need to be addressed to realize further improvements and potential *** research findings provide new insights for not only designing innovative electronics with optimal device performance but also for advancing energy-related and optoelectronic device *** this Account,we introduce recent advances regarding transistors based on a rich variety of halide perovskites,with an emphasis on strategies for improving device performance,and present our perspective on the opportunities associated with this emerging family of semiconducting *** first highlight the advantageous charge-transport characteristics of halide perovskites that make them suitable for transistor applications,along with a brief introduction of their extraordinary physical ***,the experimental advances that have been made toward transistor applications containing various perovskites and the crucial challenges for developing high-performance devices are presented in det

关键词： optoelectronic perovskite enable

Inorganic Halide Perovskite Quantum Dots:A Versatile Nanomaterial Platform for Electronic Applications

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Nano-Micro Letters 2023年第2期15卷 1-31页

作者： Chien‑Yu Huang Hanchen Li Ye Wu Chun‑Ho Lin xinwei guan Long Hu Jiyun Kim Xiaoming Zhu Haibo Zeng Tom Wu School of Materials Science and Engineering University of New South WalesSydney 2052Australia MIIT Key Laboratory of Advanced Display Materials and Devices Institute of Optoelectronics and NanomaterialsCollege of Materials Science and EngineeringNanjing University of Science and TechnologyNanjing 210094People’s Republic of China

Metal halide perovskites have generated significant attention in recent years because of their extraordinary physical properties and photovoltaic *** these,inorganic perovskite quantum dots(QDs)stand out for their prominent merits,such as quantum confinement effects,high photoluminescence quantum yield,and defect-tolerant ***,ligand engineering and an all-inorganic composition lead to a robust platform for ambient-stable QD *** review presents the state-of-the-art research progress on inorganic perovskite QDs,emphasizing their electronic *** detail,the physical properties of inorganic perovskite QDs will be introduced first,followed by a discussion of synthesis methods and growth ***,the emerging applications of inorganic perovskite QDs in electronics,including transistors and memories,will be ***,this review will provide an outlook on potential strategies for advancing inorganic perovskite QD technologies.

关键词： Inorganic perovskite Quantum dots Electronics Nanocrystals Quantum confinement effects

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聚四氟乙烯无定型相结构中红外光谱研究

化学推进剂与高分子材料 2024年第4期22卷 69-74页

作者：李雨情柴嘉欣周悦茉关鑫伟常美玲于宏伟石家庄学院化工学院河北石家庄050035

采用3种中红外(MIR)光谱附件(衰减全反射MIR光谱附件、透射MIR光谱附件及漫反射MIR光谱附件)及4种谱图处理技术(一维MIR光谱技术、二阶导数MIR光谱技术、四阶导数MIR光谱技术及去卷积MIR光谱技术)分别开展了聚四氟乙烯无定型相的结构研... 详细信息

采用3种中红外(MIR)光谱附件(衰减全反射MIR光谱附件、透射MIR光谱附件及漫反射MIR光谱附件)及4种谱图处理技术(一维MIR光谱技术、二阶导数MIR光谱技术、四阶导数MIR光谱技术及去卷积MIR光谱技术)分别开展了聚四氟乙烯无定型相的结构研究。实验发现,3种MIR光谱附件中,采用衰减全反射MIR光谱附件和透射MIR光谱附件可较好地开展聚四氟乙烯无定型相结构研究。4种谱图处理技术中,去卷积MIR光谱技术的谱图分辨能力要优于其他3种。进一步开展了聚四氟乙烯分子无定型相结构半定量研究,推测聚四氟乙烯分子无定型相的质量分数近似为5%。本项研究拓展了MIR光谱在重要的高分子材料(聚四氟乙烯)无定型相结构方面的研究范围,具有重要的应用研究价值。

关键词：中红外光谱聚四氟乙烯无定型相结构

Annealing Temperature-Dependent Luminescence Color Coordination in Eu-Doped AlN Thin Films

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Journal of Materials Science and Chemical Engineering 2024年第1期12卷 20-28页

作者： Yingda Qian Mariko Murayama Sujun guan xinwei Zhao Department of Physics Tokyo University of Science Tokyo Japan Research Center for Space System Innovation Tokyo University of Science Chiba Japan

AlN was used as a host material and doped with Eu grown on Si substrate by pulsed laser deposition (PLD) with low substrate temperature. The X-ray diffraction (XRD) data revealed the orientation and the composition of the thin film. The surface morphology was studied by scanning electron microscope (SEM). While raising the annealing temperatures from 300˚C to 900˚C, the emission was observed from AlN: Eu under excitation of 260 nm excitation. The photoluminescence (PL) was integrated over the visible light wavelength shifted from the blue to the red zone in the CIE 1931 chromaticity coordinates. The luminescence color coordination of AlN: Eu depending on the annealing temperatures guides the further study of Eu-doped nitrides manufacturing on white light emitting diode (LED) and full color LED devices.

关键词： Low-Temperature PLD Growth Eu-Doped AlN Thin Film White Light Emitting Diode

Phase segregation in inorganic mixed-halide perovskites:from phenomena to mechanisms

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Photonics Research 2020年第11期8卷 I0001-I0016页

作者： Yutao Wang Xavier Quintana Jiyun Kim xinwei guan Long Hu Chun-Ho Lin Brendon Tyler Jones Weijian Chen Xiaoming Wen Hanwei Gao Tom Wu School of Materials Science and Engineering and Advanced Materials and Manufacturing Futures Institute University of New South Wales(UNSW)SydneyNSW 2052Australia Department of Physics Florida State UniversityTallahasseeFlorida 32306USA Centre for Translational Atomaterials Swinburne University of TechnologyHawthornVIC 3122Australia

Halide perovskites,such as methylammonium lead halide perovskites(MAPbX3,X=I,Br,and Cl),are emerging as promising candidates for a wide range of optoelectronic applications,including solar cells,light-emitting diodes,and photodetectors,due to their superior optoelectronic ***-inorganic lead halide perovskites CsPbX3 are attracting a lot of attention because replacing the organic cations with Cs+enhances the stability,and its halide-mixing derivatives offer broad bandgap tunability covering nearly the entire visible ***,there is evidence suggesting that the optical properties of mixed-halide perovskites are influenced by phase segregation under external stimuli,especially illumination,which may negatively impact the performance of optoelectronic *** is reported that the mixed-halide perovskites in forms of thin films and nanocrystals are segregated into a low-bandgap I-rich phase and a high-bandgap Br-rich ***,we present a critical review on the synthesis and basic properties of all-inorganic perovskites,phase-segregation phenomena,plausible mechanisms,and methods to mitigate phase segregation,providing insights on advancing mixed-halide perovskite optoelectronics with reliable performance.

关键词： properties. spectrum. perovskite

STING高表达通过调控TLR4/NF-κB/NLRP3通路和影响炎症与凋亡水平促进小鼠肾脏缺血再灌注损伤

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南方医科大学学报 2024年第7期44卷 1345-1354页

作者：陶怀祥骆金光闻志远虞亘明苏萧王鑫玮关翰陈志军蚌埠医学院第一附属医院泌尿外科安徽蚌埠233004 蚌埠医学院慢性疾病免疫学基础与临床安徽省重点实验室安徽蚌埠233030

目的探讨STING在肾缺血再灌注损伤(IRI)中的表达水平以及相关作用机制。方法在体内水平,将24只C57BL/6小鼠分为假手术组(Sham)、IRI组、IRI+药物溶剂组(IRI+DMSO)、IRI+SN-011组,6只/组。通过肾动脉夹闭方法建立IRI模型,通过血清肌酐和... 详细信息

目的探讨STING在肾缺血再灌注损伤(IRI)中的表达水平以及相关作用机制。方法在体内水平,将24只C57BL/6小鼠分为假手术组(Sham)、IRI组、IRI+药物溶剂组(IRI+DMSO)、IRI+SN-011组,6只/组。通过肾动脉夹闭方法建立IRI模型,通过血清肌酐和尿素氮检测、PAS染色检测肾组织损伤变化,采用RT-qPCR、ELISA、Western blotting和IHC法检测肾组织中STING、KIM-1、Bcl-2、Bax、caspase-3、TLR4、P65、NLRP3、caspase-1、CD68、MPO、IL-1β、IL-6、TNF-α的水平。在体外水平,将HK-2细胞分为对照组、缺氧复氧(H/R)组、H/R+药物溶剂组(H/R+DMSO)、H/R+SN-011组,用厌氧包模拟缺氧环境,RT-qPCR和Western blotting法检测STING表达水平,流式细胞术检测各组细胞凋亡率。结果在体内水平,与Sham组相比,IRI组的PAS染色显示组织损伤增加(P<0.05),小鼠血清肌酐、尿素氮含量以及组织KIM-1、STING、TLR4、P65、NLRP3、caspase-1、caspase-3、Bax、CD68、MPO、IL-1β、IL-6、TNF-α表达水平升高(P<0.05),Bcl-2水平降低(P<0.05),SN-011抑制STING表达后,逆转了上述结果(P<0.05)。在体外水平,与对照组相比,H/R组STING的mRNA与蛋白水平升高(P<0.05),流式细胞仪检测显示细胞凋亡率上升(P<0.05),SN-011抑制STING表达,细胞凋亡率下降(P<0.05)。结论STING在肾脏IRI中表达水平上升,且可通过作用于TLR4/NF-κB/NLRP3通路以及影响炎症与凋亡水平促进肾损伤。

关键词： STING TLR4 NF-κB NLRP3 肾缺血再灌注炎症凋亡

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危险作业罪中“现实危险”的理解与适用——以X市Y县检察机关危险作业罪办理情况为例

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河南司法警官职业学院学报 2024年第2期22卷 61-65页

作者：杨鑫炜关勐李艳阳张永庆禹州市人民检察院河南许昌461670 郑州经开区人民检察院河南郑州450000 武陟县人民检察院河南焦作454950

作为《刑法修正案(十一)》新增罪名,危险作业罪首次使用了“现实危险”这一概念,打破了安全生产类犯罪只惩罚实害结果犯的模式,将尚未造成实害后果但具有现实危险性的行为规定为犯罪。危险作业罪发挥了刑法对风险“事前预防”的功能价值... 详细信息

作为《刑法修正案(十一)》新增罪名,危险作业罪首次使用了“现实危险”这一概念,打破了安全生产类犯罪只惩罚实害结果犯的模式,将尚未造成实害后果但具有现实危险性的行为规定为犯罪。危险作业罪发挥了刑法对风险“事前预防”的功能价值,标志着我国设置安全生产类犯罪的进一步发展。然而由于缺乏详细的配套司法解释,各地司法机关对“现实危险”的认定存在较大争议。对此,有必要从一线办案实践出发,通过对危险作业罪案件特点、案发情形进行分析,找出“现实危险”在司法实践中的认定标准,通过建立评测模型、构建行刑衔接机制、加强法律文书释法说理性等方式,保证“现实危险”刑法规范意义上的判定。

关键词：危险作业罪现实危险司法认定实证分析

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柜式空调扇叶结构对房间温度场的影响分析

佳木斯大学学报（自然科学版） 2024年第3期42卷 103-105,164页

作者：黄昕伟马玉平曹海松单玉强关浩安徽建筑大学机械与电气工程学院安徽合肥230601

空调温度一直在用户体验中起着举足轻重的作用。如何保存空调温度,提升空调制热效率,成了研究者们关心的问题。以柜式空调的扇叶结构为研究对象,在三维软件中建立简要计算模型,并运用有限元仿真软件来分别对原扇叶与优化结构后的扇叶进... 详细信息

空调温度一直在用户体验中起着举足轻重的作用。如何保存空调温度,提升空调制热效率,成了研究者们关心的问题。以柜式空调的扇叶结构为研究对象,在三维软件中建立简要计算模型,并运用有限元仿真软件来分别对原扇叶与优化结构后的扇叶进行模拟实验仿真。较原扇叶,优化结构后的扇叶的房间截面温度图较为均匀,速度矢量也更为密集且数量较多,房间内的平均温度提升了约1.6k。仿真实验结果表明,更改扇叶的结构形状可以有效改善房间气流及温度场,从而提高温度,满足人们对空调舒适性的要求。

关键词：柜式空调扇叶结构温度场分布