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Charge regulation by ferromagnetic metal/LiF spin-polarized interface for high-performance Li metal anodes

Rare Metals 2024年第3期43卷 995-1005页

作者： ming-yang feng Shuang Zhou Yi-Fang Zhang Ya-Ping Wang Chun-Yan Fu Jian-Wen Li Yuan-Lang Wan Zhi-Jia Zhang Yong Jiang An-Qiang Pan State Key Laboratory of Powder Metallurgy School of Materials Science and EngineeringCentral South UniversityChangsha410083China State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Advanced Fibers and Energy StorageSchool of Material Science and EngineeringTiangong UniversityTianjin300387China School of Materials Science and Engineering Hebei University of TechnologyTianjin300130China

The interfacial characteristics of the Li metal anode(LMA)play a crucial role in its overall *** various materials being applied to modify the interface,a comprehensive understanding of their specific mechanisms remains to be ***,we have prepared carbon cloth(CC)frameworks with their surfaces modified using ferromagnetic metal/LiF heterogeneous films(T^(M)-LiF-CC)as the substrate for LMA,which exhibit superior electrochemical *** ferromagnetic Co as a representative example,our study demonstrates that the enhanced performance of Co-LiF-CC,compared to bare CC,is attributed to the spinpolarized interface contributed by the Co/LiF *** and LiF play individual roles in redistributing electrons and Li^(+)to promote homogeneous Li *** nanoparticles play a crucial role in generating strong surface capacitance by storing electrons in spin-split bands,while LiF,with low surface diffusion barriers,ensures fast transportation of Li^(+).The Co-LiF-CC@Li electrodes deliver long lives of 7400 and 3600 h at 1 and 2 mA·cm^(-2)in symmetric cells,respectively;moreover,they enable full batteries with high and durable capacities,particularly when the N/P ratios are low(3.3 or even 1.7).

关键词： Lithium metal anode Interfacial charge Ferromagnetic metal Lithium fluoride Spin polarization

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Data-driven Anomaly Detection Method Based on Similarities of Multiple Wind Turbines

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Journal of Modern Power Systems and Clean Energy 2024年第3期12卷 803-818页

作者： Xiangjun Zeng ming yang Chen feng mingqiang Wang Lingqin Xia the College of Electrical Engineering&New Energy China Three Gorges UniversityYichang 443002China the Key Laboratory of Power System Intelligent Dispatch and Control Shandong UniversityJinan 250061China

The operating conditions of wind turbines(WTs)in the same wind farm(WF)may share similarities due to their shared manufacturing process,control strategy,and operating ***,the similarities of WTs are seldom considered in WT anomaly detection,resulting in the disregard of useful *** paper proposes a method to improve the reliability and accuracy of WT anomaly detection using the supervisory control and data acquisition(SCADA)data of multiple WTs in the same ***,a similarity assessment method based on a comparison of different observation time series is proposed,which objectively quantifies the similarities of WT operating ***,the SCADA data of the target WT and selected WTs that are similar are used to establish several estimation models through a long short-term memory(LSTM)*** models that exhibit good estimation performance are used to construct a combined estimation model that estimates the variations in the monitored variables of the target ***,an anomaly detection method that jointly compares the effective value and information entropy of the residuals is proposed to identify *** effectiveness and accuracy of the proposed method are verified using the data of two actual WFs.

关键词： Anomaly detection information entropy long short-term memory similarity assessment wind farm wind turbines

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Preparation of Chemically Recyclable Poly(ether-alt-ester) by the Ring Opening Polymerization of Cyclic Monomers Synthesized by Coupling Glycolide and Epoxides

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Chinese Journal of Polymer Science 2024年第2期42卷 168-175,I0006页

作者： feng Ren Zhuang-Zhuang Liang ming-Xin Niu Chen-yang Hu Xuan Pang Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei230026China

Polyester and polyether are two key oxygenated polymers, and completely alternative sequence of poly(ester-alt-ether) could efficiently combine the advantages(including flexibility, degradability, etc.) of both segments. Currently, despite their copolymers could be synthesized from one-pot mixture of cyclic esters and epoxides, perfectly alternative microstructure is very challenging to realize and typically restricted to certain monomer pairs. Moving forward, synthesizing poly(ester-alt-ether) from commercially available and largescale monomers would be a significant advance. For example, successfully commercialized poly(glycolic acid)(PGA), which is not easily soluble in polymers due to its high crystallinity and is brittle and difficult to control the degradation cycle, would encounter a new paradigm if engineered into poly(ester-altether). In this work, starting from the design of monomer with hybrid structures, we successfully synthesized a series of 1,4-dioxan-2-one containing different substituents based on glycolide(GA) and epoxides using commercially available Salen-Cr(III) and PPNCl catalytic *** new monomers underwent ring-opening polymerization(ROP) to form a series of poly(ester-alt-ether) with perfectly alternating glycolic acid and propylene glycol repeat units under catalytic system of thiourea/base. The poly(ester-alt-ether) have significantly lower glass-transition temperature than PGA. Additionally, the poly(ester-alt-ether) can be chemically recovered to monomer using Sn(Oct)2 or 1,8-diazabicyclo[5.4.0]undecane-7-ene(DBU) as a catalyst in solution, thus establishing a closed-loop life cycle. From monomers derived from GA and epoxides, this work furnishes a novel strategy for the synthesis of poly(ester-alt-ether) with chemical recyclability.

关键词： Polyester Polyether Alternative copolymer Ring-opening polymerization

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Enhanced cycle stability of aprotic Li-O_(2) batteries based on a self-defensed redox mediator

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Chinese Chemical Letters 2024年第3期35卷 449-452页

作者： Guiru Sun Yan Wang Daming yang Zexu Zhang Wei Lu ming feng Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal UniversityChangchun 130103China College of Information Technology Jilin Engineering Research Center of Optoelectronic Materials and DevicesJilin Normal UniversitySiping 136000China

LiBr as a promising redox mediator(RM)has been applied in Li-O_(2)batteries to improve oxygen evolution reaction kinetics and reduce ***,the redox shuttle of Br_(3)^-can induce the unexpected reactions and thus cause the degradation of LiBr and the corrosion of Li anode,resulting in the poor cyclability and the low round-trip ***,MgBr_(2)is firstly employed with dual functions for Li-O_(2)batteries,which can serve as a RM and a SEI film-forming *** Br^(–)is beneficial to facilitating the decomposition of Li_(2)O_(2)and thus decreasing the ***,a uniform SEI film containing Mg and MgO generates on Li anode surface by the in-situ spontaneous reactions of Mg^(2+)and Li anode in an O_(2)environment,which can suppress the redox shuttle of Br_(3)^-and improve the interface stability of Li anode and *** from these advantages,the cycle life of Li-O_(2)battery with MgBr_(2)electrolyte is significantly extended.

关键词： MgBr_(2) Redox mediator Redox shuttle Li anode SEI film

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施钾对新疆滴灌花生生长特性及产量的剂量效应

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中国油料作物学报 2024年第2期46卷 403-410页

作者：李锁丞柳延涛董红业孙振博李紫薇张春媛王开勇李强杨明凤石河子大学农学院新疆石河子832003 新疆农垦科学院作物研究所新疆石河子832000 新疆农业科学院经济作物研究所新疆乌鲁木齐830091 乌兰乌苏农业气象试验站新疆石河子832000

为提高新疆滴灌条件下的花生产量,研究钾肥适宜施用量,在新疆乌兰乌苏农业气象试验站,以花育9610(T1,新疆常播品种)和黑花5号(T2,高产品种)为材料,设置4个钾肥(K2O)梯度,K0,K1,K2和K3分别代表施用量为0、150、225和300 kg/hm^(2),按苗期... 详细信息

为提高新疆滴灌条件下的花生产量,研究钾肥适宜施用量,在新疆乌兰乌苏农业气象试验站,以花育9610(T1,新疆常播品种)和黑花5号(T2,高产品种)为材料,设置4个钾肥(K2O)梯度,K0,K1,K2和K3分别代表施用量为0、150、225和300 kg/hm^(2),按苗期15%、花针期40%、结荚期30%、饱果成熟期15%进行追肥。结果表明,花育9610和黑花5号花生的主茎高和侧枝长均随钾肥施用量增加基本呈抛物线形变化,干物质量均以K2水平最大,分别为84.37 g/株、89.37 g/株;与不施钾肥相比,K2处理主茎高、侧枝长分别比K0增加了17.91%和16.56%、7.4%和12.31%,根瘤数均在结荚期最高,分别为42.0个/株和45.3个/株;叶面积指数基本随钾肥施用量增加而增大,在出苗后90 d达到最大值;光合势随钾肥施用量增加也基本呈抛物线形态变化,K2处理出苗后75~90 d分别达到最大值4.38 m^(2)·d和4.51 m^(2)·d。两品种肥料贡献率、农学利用率均以K2处理最大,花育9610分别为26.06%和1.83 kg/kg,黑花5号分别为25.18%和1.67 kg/kg,两品种产量分别为9628.38 kg/hm^(2)和10368.35 kg/hm^(2),说明225 kg/hm^(2)可作为新疆滴灌花生钾肥施用参考用量。

关键词：花生钾肥滴灌生长特性产量

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Possibilities for the synthesis of superheavy element Z=121 in fusion reactions

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Nuclear Science and Techniques 2024年第6期35卷 90-100页

作者： ming-Hao Zhang Yu-Hai Zhang Ying Zou Xiu-Xiu yang Gen Zhang feng-Shou Zhang The Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China School of Physical Science and Technology Guangxi UniversityNanning 530004China National Laboratory of Heavy Ion Accelerator of Lanzhou Center of Theoretical Nuclear PhysicsLanzhou 730000China

Based on the dinuclear system model,the calculated evaporation residue cross sections matched well with the current experimental *** synthesis of superheavy elements Z=121 was systematically studied through combinations of stable projectiles with Z=21-30 and targets with half-lives exceeding 50 *** influence of mass asymmetry and isotopic dependence on the projectile and target nuclei was investigated in *** reactions^(254)Es(^(46)Ti,3n)^(297)121 and^(252)Es(^(46)Ti,3n)^(295)121 were found to be experimentally feasible for synthesizing superheavy element Z=121,with maximal evaporation residue cross sections of 6.619 and 4.123 fb at 219.9 and 223.9 MeV,respectively.

关键词： Superheavy nuclei Dinuclear system model Fusion reaction Evaporation residue cross section

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Organ-Specific Responses of Vacuolar H^+-ATPase in the Shoots and Roots of C_3 Halophyte Suaeda salsa to NaCl

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Journal of Integrative Plant Biology 2010年第3期52卷 308-314页

作者： ming-feng yang Jie Song Bao-ShanWang Key Laboratory of Plant Stress Research College of Life Sciences Shandong Normal University Jinan 250014 China Institute of Botany the Chinese Academy of Sciences Beijing 100093 China

Suaeda salsa L. is a halophytic species that is well adapted to high salinity. In order to understand its salt tolerance mechanism, we examined the growth and vacuolar H^＋-ATPase （V-ATPase） response to NaCI within the shoots and roots. The growth of shoots, but not roots, was dramatically stimulated by NaCI. CI^- and Na^＋ were mainly accumulated in shoots. V-ATPase activity was significantly increased by NaCI in roots and especially in shoots. Interestingly, antisera ATP95 and ATP88b detected three V1 subunits （66, 55 and 36 KDa） of V-ATPase only in shoots, while an 18 kDa V0 subunit of V-ATPase was detected by both antisera in shoots and roots. It suggested that the tissue-specific characteristics of V-ATPase were related to the different patterns of growth and ion accumulation in shoots and roots of S. salsa.

关键词： no english key word

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Highly Conductive Ag/pCF/MVQ Composite Rubber for Efficient Electromagnetic Interference Shielding

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Chinese Journal of Polymer Science 2024年第6期42卷 864-873页

作者： yang Chen Xiao-ming Shao Liang He Yi-Nuo Xu Qi-Yuan Yao Ding feng Wen-Cai Wang State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029China Key Laboratory of Beijing City for Preparation and Processing of Novel Polymer Materials Beijing University of Chemical TechnologyBeijing100029China Sino-german School of Engineering Qingdao University of Science and TechnologyQingdao266400China

In this study,flexible and highly conductive composite rubber at low filler content was successfully prepared through polydopamine-assisted electroless silver plating plus mechanical ***,carbon fibers(CF)were activated by polydopamine(PDA)to improve the surface activity by self-polymerization ***,because of the metal chelating ability of PDA,silver layer was firmly deposited on the surface of CF through a facile electroless silver plating ***,flexible silver-plated carbon fibers(Ag/pCF)silicone rubber composites prepared by mechanical *** using X-ray photoelectron spectroscopy(XPS)and X-ray diffraction(XRD),the chemical composition and crystal structure of Ag/pCF were examined,and scanning electron microscopy(SEM)was used to assess the surface morphology of the Ag/*** results showed that a uniform and dense silver layer was formed on the surface of the CF,and the conductivity of the Ag/pCF could reach 7885 S/*** was noteworthy that the composite rubber filled with only 45 phr Ag/pCF had a high electromagnetic interference shielding effectiveness(100 dB)due to the low density and high aspect ratio of Ag/*** composite rubber has excellent potential for application in the field of electromagnetic interference shielding.

关键词： Carbon fibers Polydopamine Electroless plating Silver Electromagnetic interference shielding

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Review on regulation of MnS in non-qquenched and tempered steel

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Journal of Iron and Steel Research(International) 2024年第4期31卷 779-789页

作者： Guo-xing Qiu Qing Du feng Lu De-jun Miao Yong-kun yang Xiao-ming Li School of Metallurgical Engineering Xi'an University of Architecture and TechnologyXi'an 710055ShaanxiChina Laigang Technique Center Shandong Iron and Steel Group Co.Ltd.Jinan 271104ShandongChina

An overview of the current research status and control methods of MnS in non-quenched and tempered steel was *** a low-melting plastic inclusion,the morphology and distribution of MnS were influenced by various production ***,control of MnS is a systematic problem that must be integrated into the entire production *** on the production process,the factors affecting the morphology and distribution of MnS in steel were *** effects of oxygen activity,manganese,sulfur,and some alloys on MnS inclusion precipitation were summarized,mainly including MnS modification treatment and oxygen-sulfide composite precipitation *** is believed that MnS precipitates during the solidification process of steel,and controlling the solidification cooling rate could effectively regulate the size and morphology of MnS,avoiding the precipitation of ***,by changing the deformation rate,deformation amount,deformation temperature during the hot deformation process,and heating time and temperature during heat treatment,the distribution and morphology of MnS could be *** the fine control of the above process parameters,the number of II-MnS in steel could be effectively reduced,and their morphology could be improved,thereby enhancing the performance of non-quenched and tempered steel and promoting its wider ***,applying laboratory research results to industrial production is an important direction for future research efforts in this field.

关键词： MnS Non-quenched and tempered steel Control technology Process parameter Morphology Distribution

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Simultaneous photocatalytic degradation and SERS detection of tetracycline with self-sustainable and recyclable ternary PI/TiO_(2)/Ag flexible microfibers

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Microsystems & Nanoengineering 2024年第2期10卷 101-113页

作者： Donglai Han Boyang Guo Yanru Li Wei feng Keyan Liu Tianna Wu Yuchun Wan Lili Wang ming Gao yang Liu Lili yang Maobin Wei Shuo yang School of Materials Science and Engineering Changchun University of Science and Technology130022ChangchunChina College of Science Changchun University130022ChangchunChina Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education Jilin Normal University130103ChangchunChina

Facile and efficient photocatalysts using sunlight,as well as fast and sensitive surface-enhanced Raman spectroscopy(SERS)substrates,are urgently needed for practical degradation of tetracycline(TC).To meet these requirements,a new paradigm for PI/TiO_(2)/Ag organic‒inorganic ternary flexible microfibers based on semiconducting titanium dioxide(TiO_(2)),the noble metal silver(Ag)and the conjugated polymer polyimide(PI)was developed by engineering a simple *** sunlight,the photocatalytic characteristics of the PI/TiO_(2)/Ag flexible microfibers containing varying amounts of Ag quantum dots(QDs)were evaluated with photocatalytic degradation of TC in aqueous *** results demonstrated that the amount of Ag affected the photocatalytic *** the tested samples,PI/TiO_(2)/Ag-0.07(93.1%)exhibited a higher photocatalytic degradation rate than PI/TiO_(2)(25.7%),PI/TiO_(2)/Ag-0.05(77.7%),and PI/TiO_(2)/Ag-0.09(63.3%).This observation and evaluation conducted in the present work strongly indicated a charge transfer ***,the PI/TiO_(2)/Ag-0.07 flexible microfibers exhibited highly sensitive SERS detection,as demonstrated by the observation of the Raman peaks for TC even at an extremely low concentration of 10–10 moles per *** excellent photocatalytic performance and SERS detection capability of the PI/TiO_(2)/Ag flexible microfibers arose from the Schottky barrier formed between Ag and TiO_(2)and also from the outstanding plasmonic resonance and visible light absorptivity of Ag,along with immobilization by the *** successful synthesis of PI/TiO_(2)/Ag flexible microfibers holds significant promise for sensitive detection and efficient photocatalytic degradation of antibiotics.

关键词： mechanism. photocatalytic ternary

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