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Chinese Chemical Letters 2020年第3期31卷 903-908页

作者： Junsheng Zheng Nan Qin Liming Jin Xin Guo Chao Shen Qiang Wu Jim PZheng Clean Energy Automotive Engineering Center Tongji University(Jiading Campus)Shanghai 201804China School of Automotive Studies Tongji University(Jiading Campus)Shanghai 201804China Department of Electrical and Computer Engineering Florida A&M University-Florida State University College of EngineeringFL 32304United States

The energy density of non-aqueous carbon-based electrochemical capacitors(cEC)is mainly determined by the specific capacitance and operational voltage *** this study,we propose to construct an unbalanced structure to make full use of stable voltage range for improving energy *** stable voltage range is firstly carefully explored using cyclic *** an unbalanced carbon-based electrochemical capacitor(ucEC)is constructed with an optimized positive electrode to negative electrode weight ratio and voltage *** electrochemical performance is comprehensively investigated,including energy density,power density as well as cycle *** ucEC is capable to deliver an improved energy density up to 64.9 Wh/kg(1.4 times as high as a general cEC)without sacrificing the power density and cycle *** electrode properties after cycling are also analyzed,illustrating the change of electrode potential caused by unbalanced *** proposed structure demonstrates a great potential for improving the energy density at little cost of electrode design and cell configuration.

关键词： Unbalanced electrochemical capacitor non-aqueous electrolyte High working voltage Practical application High energy density

A method for observing tridimensional morphology of sulfide inclusions by non-aqueous solution electrolytic etching

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Journal of Iron and Steel Research International 2019年第3期26卷 275-284页

作者： Dong Zhang Ping Shen Jian-bo Xie Jin-min An Zong-ze Huang Jian-xun Fu State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced Ferrous Metallurgy School of Materials Science and Engineering Shanghai University Shanghai 200072 China State Key Laboratory of Development and Application Technology of Automotive Steel (Baosteel Group) Shanghai 20190 China

Three-dimensional investigation of sulfides is required in order to improve the mechanical properties of steel by controlling the sulfides in the steel.A method including its principles and device is introduced for the investigation of threedimensional morphology of *** method is suitable for gear steel,free cutting steel,non-quenched steel,tempered steel(ws≥0.02 wt.%),*** influences of current density,time,and temperature on the exposure degree of sulfide inclusions were investigated by using 16MnCrS5 *** best parameters of electrolytic etching of sulfur steel,as found by experimentation,are as follows:current density,37.5-52.5 mA/cm2;time,30-35 min;and temperature,—10 to 0℃.Under these conditions,the three-dimensional morphology of sulfide inclusions in sulfur-bearing steel can be exposed effectively.

关键词： Sulfide non-aqueous electrolyte Electrolytic etching Three-dimensional morphology

Electrostatic interaction mechanism on the separation of phenols by non-aqueous capillary electrophoresis

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Science China Chemistry 2007年第1期50卷 47-53页

作者： WEI WeiLi YIN YongGuang XIA ZhiNing CHEN ZhiTao LIU WeiQi Department of Pharmaceutics College of Chemistry and Chemical EngineeringChongqing UniversityChongqing 400044China Research Center for Eco-Environmental Science Chinese Academy of SciencesBeijing 100081China Key Laboratory for Biomechanics&Tissue Engineering of Ministry of Education Chongqing UniversityChongqing 400044China

The electrostatic interaction between additive and analyte is of great importance to non-aqueous cap- illary electrophoresis(NACE)*** tetraalkylammonium bromides and acetonitrile were applied as additives and running solvent *** effect of alkyl chain length and concentra- tion of additive on electrostatic interactions was investigated by the separation of *** sepa- ration ability was found to increase with decreasing alkyl chain length of the additive,and the resolu- tion values were increased with increasing additive *** separation was seriously dete- riorated after a little amount of water was added in the running ***,the electrostatic interaction is strong under the conditions of low electron cloud density,weak steric hindrance and multi-interaction ***,the separation result can be predicted by theoretical analysis,which is helpful for the separation of other substances in NACE based on electrostatic interaction.

关键词： non-aqueous capillary electrophoresis electrostatic interaction tetraalkylammoniums phenol compounds

Organic Electrode Materials for non-aqueous K-Ion Batteries

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Transactions of Tianjin University 2021年第1期27卷 1-23页

作者： Mingtan Wang Wenjing Lu Huamin Zhang Xianfeng Li Division of Energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049 China

The demands for high-performance and low-cost batteries make K-ion batteries(KIBs) considered as promising supplements or alternatives for Li-ion batteries(LIBs). Nevertheless, there are only a small amount of conventional inorganic electrode materials that can be used in KIBs, due to the large radius of K^+ ions. Diff erently, organic electrode materials(OEMs) generally own sufficiently interstitial space and good structure flexibility, which can maintain superior performance in K-ion systems. Therefore, in recent years, more and more investigations have been focused on OEMs for KIBs. This review will comprehensively cover the researches on OEMs in KIBs in order to accelerate the research and development of KIBs. The reaction mechanism, electrochemical behavior, etc., of OEMs will all be summarized in detail and deeply. Emphasis is placed to overview the performance improvement strategies of OEMs and the characteristic superiority of OEMs in KIBs compared with LIBs and Na-ion batteries.

关键词： Energy storage KIBs Organic electrode materials non-aqueous

Hydrothermal preparation of nanocrystalline indium phosphidein non-aqueous system

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Chinese Science Bulletin 1996年第23期41卷 1964-1968页

作者：谢毅王文中钱逸泰刘先明 Department of Applied Chemistry University of Science and Technology of China Hefei 230026 China Also in Structure Research Laboratory University of Science and Technology of ChinaHefei 230026China. Structure Research Laboratory University of Science and Technology of China Hefei 230026 China

Nanocrystalline semiconductors are potentially useful materials due to their novel prop-erties which are markedly different from those of the bulk solids,the most notable one beingquantum *** and application of nanocrystalline Ⅲ-V class of materialssuch as InP have recently attracted much *** is difficult to synthesize Ⅲ-V mat-erials by use of the traditional solid-state methods,due to their high synthesis temper-

关键词： nanocrystalline semiconductor indium phosphide hydrothermal preparation in non-aqueous system.

non-aqueous lithium bromine battery of high energy density with carbon coated membrane

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Journal of Energy Chemistry 2017年第4期26卷 639-646页

作者： Xiaoli Xi Xianfeng Li Chenhui Wang Qinzhi Lai Yuanhui Cheng Pengcheng Xu Huamin Zhang Division of Energy Storage Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100039China Collaborative Innovation Center of Chemistry for Energy Materials Dalian 116023LiaoningChina

Flow batteries with high energy density and long cycle life have been pursued to advance the progress of energy storage and grid application. non-aqueous batteries with wide voltage windows represent a promising technology without the limitation of water electrolysis, but they suffer from low electrolyte concentration and unsatisfactory battery performance. Here, a non-aqueous lithium bromine rechargeable battery is proposed, which is based on Br;/Br;and Li;/Li as active redox pairs, with fast redox kinetics and good stability. The Li/Br battery combines the advantages of high output voltage（;.1 V）,electrolyte concentration（3.0 mol/L）, maximum power density（29.1 m W/cm;） and practical energy density（232.6 Wh/kg）. Additionally, the battery displays a columbic efficiency（CE） of 90.0%, a voltage efficiency（VE） of 88.0% and an energy efficiency（EE） of 80.0% at 1.0 m A/cm;after continuously running for more than 1000 cycles, which is by far the longest cycle life reported for non-aqueous flow batteries.

关键词： non-aqueous Battery Lithium Bromine Energy-storage

Enhancing kinetics of Li-S batteries by graphene-like N,S-codoped biochar fabricated in NaCl non-aqueous ionic liquid

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Science China Materials 2019年第4期62卷 455-464页

作者： Man Huang Jingyu Yang Baojuan Xi Kan Mi Zhenyu Feng Jing Liu Jinkui Feng Yitai Qian Shenglin Xiong Key Laboratory of the Colloid and Interface Chemistry Ministry of Education and School of Chemistry and Chemical Engineering Shandong University College of Materials Science and Engineering Qingdao University of Science and Technology Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials(Ministry of Education) School of Materials Science and Engineering Shandong University Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China

Graphene-like N,S-codoped bio-carbon nanosheets(GNSCS) were prepared by a facile and environment-friendly NaCl non-aqueous ionic liquid route to house sulfur for lithium-sulfur battery. The natural nori powder was calcined at 900°C for 3 h under Ar, in which NaCl non-aqueous ionic liquid can exfoliate carbon aggregates into nanosheets. The structural characterization of GNSCS by a series of techniques demonstrates the graphene-like *** evaluated as the matrix for sulfur cathode, GNSCS/S exhibits more prominent cycling stability and rate capability.A discharge capacity of 548 mA h g-1 at a current density of 1.6 A g-1 after 400 cycles was delivered with a capacity fade rate of only 0.13% per cycle and an initial Coulombic efficiency(CE) as high as 99.7%. When increasing the areal sulfur loading up to 3 mg cm-2, the discharge capacity can still be retained at 647 mA h g-1 after more than 100 cycles with a low capacity degradation of only ~0.30% per cycle. The features of N/S dual-doping and the graphene-like structure are propitious to the electron transportation, lithium-ion diffusion and more active sites for chemically adsorbing polysulfides. It is anticipated that other functional biochar carbon can also be attained via the low-cost, sustainable and green method.

关键词： nori powder graphene-like N S-codoped bio-carbon nanosheets NaCl non-aqueous ionic liquid reaction kinetics lithium-sulfur batteries

Thermodynamic solvation of a series of homologous α-amino acids in non-aqueous mixture of ethylene-glycol and N,N-dimethyl formamide

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Journal of Biophysical Chemistry 2011年第3期2卷 185-193页

作者： Kalachand Mahali Sanjay Roy Bijoy Krishna Dolui Dept. of Chemistry Shibpur Dinabundhoo Institution(College) Howrah India

Standard free energies (ΔG0t(i) ) and entropies (ΔS0t(i)) of transfer of some homologous α-amino acids viz. glycine (gly), dl-alanine (ala), dl-α-amino butyric acid (aba) and dl-nor-valine (nor-val) from protic ethylene glycol (EG) to dipolar aprotic N,N-dimethyl formamide (DMF) have been evaluated from solubility measure-ments at five equidistant temperatures i.e from 15 to 350C. The observed ΔG0t(i) and TΔS0t(i) Vs composition profiles are complicated because of the various interaction effects. The chemical effects of the transfer Gibbs energies (Δ***(i)) and entropies of transfer (Δ***(i)) have been obtained after elimination of cavity effect, estimated by the scaled particle theory and dipole-dipole interaction effects, estimated by the use of Keesom-orientation expression. The chemical contributions of transfer energetics of homologous α-amino acids are guided by the composite effects of increased dispersion interaction, basicity and decreased acidity, hydrogen bonding effects and solvophobic solvation of ethylene glycol and N, N-dimethyl formamide mixed solvent as compared to that of reference solvent (ethylene glycol).

关键词： non-aqueous Solvent System Transfer Energetic Zwitterions α-Amino Acids Solvophobic Solvation

Environmental Fate of Petroleum Hydrocarbons in Soil:Review of Multiphase Transport,Mass Transfer,and Natural Attenuation Processes

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Pedosphere 2018年第6期28卷 833-847页

作者： Maria BALSEIRO-ROMERO Carmen MONTERROSO Juan J.CASARES Department of Chemical Engineering Centre for Research in Environmental Technologies (CRETUS)Universidade de Santiago de CompostelaSantiago de Compostela 15782(Spain) Department of Soil Science and Agricultural Chemistry Centre for Research in Environmental Technologies (CRETUS)Unzversidade de Santiago de CompostelaSantiago de Compostela 15782(Spain)

The increasing use of petroleum-derived fuels over the last few decades has subsequently augmented the risk of spills in the environment. Soil pollution with petroleum hydrocarbons(principally caused by leaks in pipelines and underground storage tanks) is one of the major sources of soil degradation. Once in soil, fuel hydrocarbons suffer from a wide variety of multiphase processes including transport(advection, diffusion, and dispersion) among and within phases(aqueous and non-aqueous liquid, gas, and soil solids), mass transfer among phases(volatilization, sorption, and solution), and other natural attenuation processes, such as biodegradation and plant uptake and metabolism. This review identifies and describes the major processes occurring in soil that have a significant influence on the environmental fate of petroleum hydrocarbons. The definition of the processes involved in pollutant migration and distribution in soil and the formulation of adequate equations using accurate parameters(e.g., diffusion coefficients, velocity of advective flows, and mass transfer coefficients) will allow prediction of the final fate of soil pollutants. In addition to transport and mass transfer processes,which are more widely studied, the incorporation of attenuation mechanisms driven by microorganisms and plants is essential to predict the final concentration of the pollutants in the whole multiphase scenario. This work underlines the importance of the determination of accurate parameters through the performance of laboratory and/or field-scale experiments to develop precise pollutant migration models.

关键词： degradation fuel-derived pollutants modelling multiphase non-aqueous phase liquid soil pollution soil processes sorption

Gastro retentive microencapsulated Cefpodoxime Proxetil to improve oral bioavailability

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Asian Pacific Journal of Tropical Medicine 2009年第6期2卷 8-10页

作者： Deepa Karthikeyan Karthikeyan M Department of Pharmaceutics Nehru College of PharmacyPambadyThiruvilwamalaThrissur Dist.Kerala State 680597 India Department of Pharmacology Al Shifa College of PharmacyPoothavanam(P.O.)KizhatturPerintalmannaMalappuram Dist.Kerala State 679325 India

Objective:The objective of the present study was to develop floating microspheres of Cefpodoxime Proxetil in order to achieve an extended retention in the upper GIT,which may result in enhanced absorption and there by improved ***:The microspheres were prepared by non - aqueous solvent evaporation method using polymers such as Hydroxyl Propyl Methyl Cellulose（HPMC K15M）,Ethyl Cellulose（EC） in different ratios,and Cefpodoxime Proxetil contain in each *** vitro drug release were performed by USP apparatus type I andthe microspheres were characterized by calculating percentage yield,particle size analysis, buoyancy percentage,drug entrapment efficiencyand in vitro drug release ***:The result showed microspheres yield were 50.50%-72.21%,particle size were distributed between75-600μm,drug entrapment efficiency were 14.1%-28.2%,buoyancy percentage were 70.10%-88.25%.Conclusion: Cefpodoxime Proxetil floating microspheres,at the lower polymer to drug ratio,there was a significant drug release. The better drug release profile was seen with FA2 with ratio of drug polymer（1:2）.

关键词： Hydroxyl Propyl Methyl Cellulose Ethyl Cellulose Drug release Bioavailability non-aqueous solvent evaporation Floating microspheres