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Polarizable Additive with Intermediate Chelation Strength for Stable Aqueous Zinc‑Ion Batteries

Nano-Micro Letters 2024年第5期16卷 41-55页

作者： Yuting Xia Rongao Tong Jingxi Zhang mingjie xu Gang Shao Hailong Wang Yanhao Dong Chang‑An Wang State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084People’s Republic of China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanPeople’s Republic of China

Aqueous zinc-ion batteries are promising due to inherent safety,low cost,low toxicity,and high volumetric capacity.However,issues of dendrites and side reactions between zinc metal anode and the electrolyte need to be solved for extended storage and cycle life.Here,we proposed that an electrolyte additive with an intermediate chelation strength of zinc ion—strong enough to exclude water molecules from the zinc metal-electrolyte interface and not too strong to cause a significant energy barrier for zinc ion dissociation—can benefit the electrochemical stability by suppressing hydrogen evolution reaction,overpotential growth,and den-drite formation.Penta-sodium diethylene-triaminepentaacetic acid salt was selected for such a purpose.It has a suitable chelating ability in aqueous solutions to adjust solvation sheath and can be readily polarized under electrical loading conditions to further improve the passivation.Zn||Zn symmetric cells can be stably operated over 3500 h at 1 mA cm^(-2).Zn||NH4V4O10 full cells with the additive show great cycling stability with 84.6%capacity retention after 500 cycles at 1 A g^(-1).Since the additive not only reduces H2 evolution and corrosion but also modifies Zn2+diffusion and deposition,highlyreversible Zn electrodes can be achieved as verified by the experimental results.Our work offers a practical approach to the logical design of reliable electrolytes for high-performance aqueous batteries.

关键词： Aqueous zinc-ion batteries Electrolyte additives DTPA-Na Chelation strength

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Continuous preparation of strong and tough PVA nanocomposite fibers by mechanical stretching-assisted salting-out treatment

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Nano Research 2024年第4期17卷 3156-3163页

作者： Hang Chen Guangze Yang Yingzhi Sun Yichao xu mingjie Liu Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education School of ChemistryBeihang UniversityBeijing 100191China Research Institute for Frontier Science Beihang UniversityBeijing 100191China International Research Institute for Multidisciplinary Science Beihang UniversityBeijing 100191China

Polymer composite fibers with superior properties such as excellent combined strength and toughness and biocompatibility can be used in high-tech applications of braided protective devices and smart wearable,however the research of high-performance polymer composite fiber remains in the infant stage.Here we present a strategy to produce strong and tough anisotropic polymer nanocomposite fibers with orientedly aligned salt rods using mechanical stretching-assisted salting-out treatment.The prepared nanocomposite fibers have a tensile strength of up to 786±2.7 MPa and an elongation at break of 81%,and the anisotropic fibers exhibit good transmission of mechanical vibration in the longitudinal direction with high resolution.During the fabrication process,the salt builds up into oriented rods during the directional salting process,and the polymer is confined to the 150 nm domain between the rods after the solvent is completely evaporated,giving the nanocomposite fibers superior mechanical properties.The presented strategy can be applied to the continuous mass production of nanocomposite fibers and is also generalizable to other polymer nanocomposites,which could extend the applicability of nanocomposite fibers to conditions involving more demanding mechanical loading and mechanical vibration transmission.

关键词： poly(vinyl alcohol)(PVA)nanofibers oriented structure ultrastrong and stiff mechanical vibration transmission salting out continuous production

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Editorial:special topic on biomaterials and bioinspired materials

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Science China Materials 2024年

作者： mingjie Liu xu Hou Dan Wang Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education School of Chemistry Beihang University International Research Institute for Multidisciplinary Science Beihang University State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical Engineering Xiamen University Research Institute for Biomimetics and Soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials Research College of Physical Science and Technology Xiamen University State Key Laboratory of Biochemical Engineering Key Laboratory of Biopharmaceutical Preparation and Delivery Institute of Process Engineering Chinese Academy of Sciences University of Chinese Academy of Sciences

Biomaterials have been persistently focused owing to their intricate design and efficient operation. In order to satisfy the demands of life and medical sciences, large amounts of biomaterials capable of interacting with living systems have been created, thereby achieving the diagnosis, treatment or replacement of cells, tissues, and organs. After continuous evolution for billions of years, living organisms have eventually developed sophisticated multi-scale structures with diverse biological functions to adapt to the external environment.

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Enhanced catalytic activity and thermal stability by highly dispersed Pd-based nanocatalysts embedded in ZrO_(2)hollow spheres

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Frontiers of Materials Science 2023年第2期17卷 133-142页

作者： Tianli Liu Jian Zhang mingjie xu Chuanjin Tian Chang-An Wang School of Materials Science and Engineering Jingdezhen Ceramic InstituteJingdezhen 333001China State Key Lab of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Sintering resistant noble metal nanoparticles are critical to the development of advanced catalysts with high activity and stability.Herein,we reported the construction of highly dispersed Pd nanoparticles loaded at the inner wall of ZrO_(2)hollow spheres(Pd@HS-ZrO_(2)),which shows improved activity and thermal stability over references in the Pd-ZrO_(2)(catalyst-support)system.Even after 800℃ high temperature calcination,the Pd nanoparticles and ZrO_(2)hollow spheres did not undergo morphological changes.The Pd@HS-ZrO_(2)manifests batter catalytic activity and thermal stability than the counterpart Pd/ZrO_(2)catalysts.In comparison to Pd/ZrO_(2)-800,Pd@ZrO_(2)-800 exhibits a 25℃ reduction in the temperature required for complete conversion of CO.The enhanced catalytic activity and thermal stability of Pd@HS-ZrO_(2)can be attributed to the nanoconfinement effect offered by the 10 nm wall thickness of the ZrO_(2)hollow spheres,which suppresses the coarsening of the Pd nanoparticles(active center for catalysis).

关键词： catalysis nanoparticles coarsening thermal stability

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基于超表面的超短脉冲时空调控(特邀)

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光学学报 2024年第10期44卷 187-201页

作者：陈璐何明杰吴强许京军南开大学物理科学学院天津300071 南开大学泰达应用物理研究院天津300457

光学超表面作为一种二维人工纳米材料,以其在亚波长尺度上对于光场的多维调控能力,以及易加工、可集成、高损伤阈值等优势,在超短脉冲调控领域展现出了巨大的应用潜力。综述了基于超表面的超短脉冲时域调控和时空域调控最新研究进展,重... 详细信息

光学超表面作为一种二维人工纳米材料,以其在亚波长尺度上对于光场的多维调控能力,以及易加工、可集成、高损伤阈值等优势,在超短脉冲调控领域展现出了巨大的应用潜力。综述了基于超表面的超短脉冲时域调控和时空域调控最新研究进展,重点介绍了利用傅里叶合成实现按需定制超短脉冲四维时空形貌的调控技术,并对基于超表面的光场时空调控技术的发展进行了展望。

关键词：光场调控脉冲整形超表面时空调控傅里叶合成

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ELAID:detecting integer-Overflow-to-Buffer-Overflow vulnerabilities by light-weight and accurate static analysis

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Cybersecurity 2018年第1期1卷 860-878页

作者： Lili xu mingjie xu Feng Li Wei Huo Institute of Information Engineering Chinese Academy of SciencesBeijingChina School of Cyber Security University of Chinese Academy of SciencesBeijingChina

The Integer-Overflow-to-Buffer-Overflow(IO2BO)vulnerability has been widely exploited by attackers to cause severe damages to computer systems.Automatically identifying this kind of vulnerability is critical for software security.Despite many works have been done to mitigate integer overflow,existing tools either report large number of false positives or introduce unacceptable time consumption.To address this problem,in this article we present a static analysis framework.It first constructs an inter-procedural call graph and utilizes taint analysis to accurately identify potential IO2BO vulnerabilities.Then it uses a light-weight method to further filter out false positives.Specifically,it generates constraints representing the conditions under which a potential IO2BO vulnerability can be triggered,and feeds the constraints to SMT solver to decide their satisfiability.We have implemented a prototype system ELAID based on LLVM,and evaluated it on 228 programs of the NIST’s SAMATE Juliet test suite and 14 known IO2BO vulnerabilities in real world.The experiment results show that our system can effectively and efficiently detect all known IO2BO vulnerabilities.

关键词： Integer-Overflow-to-Buffer-Overflow(IO2BO)vulnerability Inter-procedural dataflow analysis Taint analysis Path satisfiability

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Preparation and Application of Natural Bactericidal Deodorizer Bactericidal Deodorizer

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China Detergent & Cosmetics 2024年第2期9卷 38-42页

作者： Lin Jiahong Tao Hongbing xu Jian Deng Xiaofeng Gan Zhihao Liu Yonglong Chen mingjie Li Liangqiu Guangdong Dimei New Materials Technology Co. Ltd.China Guangdong Dimei Biological Technology Co. Ltd.China Institute of Microbiology Guangdong Academy of SciencesChina

Jasmine essential oil and lemon essential oil were selected for deodorizing ingredient.Lysine and silver ions were selected as auxiliary raw material.The product was prepared by emulsion dissolution technology.The minimum inhibitory concentration of various bacteria were during 100~2,000 mg/L.In the test,the germicidal efficiency of 2.0%(w/w)deodorant was 99%.The removal efficiency of trimethylamine and methanthiol were more than 95%by 3.0%(w/w).deodorant.The removal efficiency of ammonia and methanthiol were more than 92%by 3.0%(w/w)deodorant.In addition,The removal efficiency of isovaleric acid was 98%by 2.0%(w/w)deodorant.In analysis result,common pathogenic bacteria were effectively suppressed,kitchen and toilet odors were efficiently removed by natural plant deodorant.

关键词： plant extracts amino acid bactericide deodorizer

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干旱条件下蒸散变异由气象因子主控转变为生物因子主控

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Journal of Plant Ecology 2022年第5期15卷 921-932页

作者： mingjie xu Tingting An Zhoutao Zheng Tao Zhang Yangjian Zhang Guirui Yu College of Agronomy Shenyang Agricultural UniversityShenyang 110866China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 10010lChina Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 10010lChina College of Resources and Environment University of Chinese Academy of SciencesBeijing 100190China

青藏高原被称为中国水塔,其蒸散(evapotranspiration,ET)影响着青藏高原的水分平衡及高寒草甸生态系统的稳定性。然而,全球变化进程对青藏高原蒸散的变异及其控制机制的影响尚不明晰。因此,本研究旨在明晰不同水分条件下,青藏高原高寒... 详细信息

青藏高原被称为中国水塔,其蒸散(evapotranspiration,ET)影响着青藏高原的水分平衡及高寒草甸生态系统的稳定性。然而,全球变化进程对青藏高原蒸散的变异及其控制机制的影响尚不明晰。因此,本研究旨在明晰不同水分条件下,青藏高原高寒草甸生态系统蒸散变异受气象因子主控亦或是受生物因子主控。基于6年(2013-2018)的碳通量与气象因子和生物因子数据,采用线性扰动分析法量化了各气象因子和生物因子对蒸散变异的贡献。研究结果表明,在湿润年的生长旺季(7-8月),气象因子主控蒸散的变异。能量供应的不足限制了蒸散,因此净辐射和温度主控了蒸散的变异。在干旱年的生长旺季,蒸散变异由气象因子主控转变为生物因子主控,蒸散变异主要受到冠层导度和叶面积指数的控制。此时,生态系统受水分限制。本研究为深入研究不同水分条件下气象和生物因子如何控制蒸散变异提供了经验:有助于深刻理解水循环过程,可为未来气候变化条件下有效管理高寒草甸生态系统水资源提供理论基础。

关键词：蒸散气象影响生物影响涡度相关青藏高原

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Tubes with coated and sintered porous surface for highly efficient heat exchangers

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Frontiers of Chemical Science and Engineering 2018年第3期12卷 367-375页

作者： Hong xu Yulin Dai Honghai Cao Jinglei Liu Li Zhang mingjie xu Jun Cao Peng xu Jianshu Liu State Key Laboratory of Chemical Engineering East China University of Science and Technology Shanghai 200237 China Wuxi Chemical Equipment Co. Ltd Wuxi 214131 China Department of Material Science and Engineering University of California in Irvin CA 92697 USA

Surface modification is a direct and effective way to enhance the efficiency of heat exchangers. Surface modification by forming a microporous coated layer can greatly enhance the boiling heat transfer and thus achieve a high performance. In this paper, we systematically investigate the boiling behavior on a plain surface with/ without sintered microporous coatings of copper powder. The results demonstrated that the sintered surface has a better performance in nucleate boiling due to the increased nucleation sites. The superheat degree is lower and the bubble departure diameter is larger for the sintered surface than for the plain surface, so the heat can be carried away more efficiently on the sintered surface. In addition, the heat transfer capacity on the sintered surface depends on both the powder size and the coating thickness for a high flux tube. The optimum heat transfer capacity can be obtained when the thickness of the microporous coating layer is 3-5 times of the sintered powder diameter. As a result, the heat transfer coefficient tube can be up to 3 times higher for the tube with a sintered surface than that with a plain surface, showing a pronounced enhancement in heat transfer and a high potential in chemical engineering industry application.

关键词： microporous coating layer surface modification boiling enhancement sintering

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Intimate atomic Cu-Ag interfaces for high CO2RR selectivity towards CH4 at low over potential

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Nano Research 2021年第10期14卷 3497-3501页

作者： Chungseok Choi Jin Cai Changsoo Lee Hyuck Mo Lee mingjie xu Yu Huang Department of Materials Science and Engineering University of CaliforniaLos AngelesCA 90095USA Hydrogen Energy Department Korea Institute of Energy Research152 Gajeong-roYuseong-guDaejeon 34129Republic of Korea Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology291 Daehak-roYuseong-guDaejeon 34141Republic of Korea Irvine Materials Research Institute(IMRI) University of CaliforniaIrvineCA 92697USA Department of Materials Science and Engineering University of CaliforniaIrvineCA 92697USA

Developing highly efficient electrochemical catalysts for carbon dioxide reduction reaction(CO_(2)RR)provides a solution to battle global warming issues resulting from ever-increasing carbon footprint due to human activities.Copper(Cu)is known for its efficiency in CO_(2)RR towards value-added hydrocarbons;hence its unique structural properties along with various Cu alloys have been extensively explored in the past decade.Here,we demonstrate a two-step approach to achieve intimate atomic Cu-Ag interfaces on the surface of Cu nanowires,which show greatly improved CO_(2)RR selectivity towards methane(CH4).The specially designed Cu-Ag interfaces showed an impressive maximum Faradaic efficiency(FE)of 72%towards CH4 production at-1.17 V(vs.reversible hydrogen electrode(RHE)).

关键词： electrochemical CO_(2)reduction reaction catalyst copper silver bimetallic interface

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