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高离子电导率和均匀锂离子传输的磺酸基聚醚凝胶聚合物电解质用于高性能锂金属电池（英文）

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science China Materials 2025年

作者：胡振原刘子莹刘凯秦金鹏郭文凡凡威震张运丰 Hydrogen Energy Technology Innovation Center for Hubei Province Faculty of Material Science and Chemistry China University of Geosciences (Wuhan) School of Environmental Studies China University of Geosciences (Wuhan)

凝胶聚合物电解质基锂金属电池由于高比容量和低成本的优势,对于发展高能量密度储存设备具有重要意义.然而,传统型凝胶电解质因其锂离子传输效率较低、易产生极化现象,从而导致不可控的锂枝晶生长,最终阻碍了其大规模实际应用.本文设计...

凝胶聚合物电解质基锂金属电池由于高比容量和低成本的优势,对于发展高能量密度储存设备具有重要意义.然而,传统型凝胶电解质因其锂离子传输效率较低、易产生极化现象,从而导致不可控的锂枝晶生长,最终阻碍了其大规模实际应用.本文设计并合成出具有丰富离子传输位点的聚醚型锂单离子传导聚合物（DEBS-Li）,随后将其与聚偏氟乙烯-六氟丙烯P（VDF-HFP）基质相复合,采用静电纺丝技术制备出高传导性复合纳米纤维膜.实验发现,具有丰富磺酸基团的DEBS-Li可通过静电作用促进锂盐解离,从而加快离子迁移,赋予凝胶电解质在25℃时具有高离子电导率(～1.58×10-3S cm-1)和锂离子迁移数（0.62）.离子传输动力学的优化可大大延迟锂枝晶的成核时间,并显著抑制锂枝晶的形成.因此,采用该电解质组装成的锂对称电池在1.5 mA cm-2稳定运行250小时未发生短路,金属锂二次电池在10 C的高倍率下稳定循环500圈,容量保持率约为90%.本工作开发的新型聚醚凝胶聚合物电解质在高性能锂电池的实际应用中具有极大潜力.

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Physical Studies of Some Hydrazinobenzoic Acid Complexes

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Journal of Materials science & Technology 2005年第1期21卷 140-144页

作者： M.G.Abd El Wahed S.Abd El Wanees M.El Gamel S.Abd El Haleem faculty of science Zagazig University Zagazig EgyptFaculty of Science Zagazig University Zagazig EgyptFaculty of Science Zagazig University Zagazig EgyptFaculty of Science Zagazig University Zagazig Egypt

The stability constants of complexes of 2-hydrazinobenzoic acid and 4-hydrazinobenzoic acid with Ni (Ⅱ), Cu (Ⅱ), Zn (Ⅱ), Cd (Ⅱ), and Hg (Ⅱ) were determined potentiometricaIly at different temperatures. The thermodynamic parameters, △G0, △H0, and △S0 were calculated and proved that the complexation process is spontaneous and endothermic. The thermodynamic functions were analyzed in terms of electrostatic and non-electrostatic components and the results reveal that ionic bonds are formed between the studied ligands and metal ions. Conductometric titration was shown that the stoichiometry of the formed complexes are M:L and M:2L. The structure of the prepared solid complexes was characterized using IR, 1H NMR, 13C NMR spectroscopies as well as X-ray diffraction technique. Finally electrical conductivity of the ligands and their copper complexes was measured and shown that the ligands have a semiconductor behaviour.

关键词： Potentiometric titration Stability constants Thermodynamic parameters Structure of metal complexes

Exact solutions for nonlinear partial fractional differential equations

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Chinese Physics B 2012年第11期21卷 32-38页

作者： Khaled A.Gepreel Saleh Omran Mathematics Department Faculty of ScienceZagazig University Mathematics Department Faculty of ScienceTaif University Mathematics Department Faculty of scienceSouth Valley University

′In this article, we use the fractional complex transformation to convert nonlinear partial fractional differential equations to nonlinear ordinary differential equations. We use the improved （G′/G）-expansion function method to calculate the exact solutions to the time- and space-fractional derivative foam drainage equation and the time- and space-fractional derivative nonlinear KdV equation. This method is efficient and powerful for solving wide classes of nonlinear evolution fractional order equations.

关键词： fractional calculus complex transformation modified Riemann-Liouville derivative im- proved (G′/G)-expansion function method

Sonochemical synthesis and characterization of uniform lanthanide orthophosphate(LnPO_4, Ln=La and Ce) nanorods

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Rare Metals 2015年第5期34卷 301-307页

作者： Anukorn Phuruangrat Titipun Thongtem Somchai Thongtem Department of Materials science and Technology Faculty of Science Prince of Songkla University Department of Chemistry Faculty of Science Chiang Mai University Department of Physics and Materials science Faculty of Science Chiang Mai University

Uniform lanthanide orthophosphate （LnPO4, Ln = La and Ce） nanorods were successfully synthesized by a simple ultrasonic irradiation method using lanthanide nitrate salt （Ln（NO3）3-6H2O, Ln = La and Ce） and sodium phosphate （Na3PO4） in aqueous solutions with the pH of 1-3. The products were characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, high-resolution transmission electron microscopy （HRTEM）, Fourier transform infrared spectrometer （FT-IR）, and UV-visible （UV-Vis） spectroscopy. In this research, the products are nanorods of monoclinic LaPO4 and hexagonal CePOa structures and the vibration modes of PO4^3-, including the strong peaks at 227 nm for LaPO4, and at 225 and 278 nm for CePO4.

关键词： Ultrasonic Lanthanide orthophosphate Nanorods irradiation

Transport path optimization algorithm based on fuzzy integrated weights

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Chinese Physics B 2014年第11期23卷 672-677页

作者：侯远达徐肖豪 College of Computer science and Technology Tianjin University military Transportation Department military Transportation University College of Air Traffic Management Civil Aviation University of China

Natural disasters cause significant damage to roads, making route selection a complicated logistical problem. To overcome this complexity, we present a method of using a trapezoidal fuzzy number to select the optimal transport path. Using the given trapezoidal fuzzy edge coefficients, we calculate a fuzzy integrated matrix, and incorporate the fuzzy multi- weights into fuzzy integrated weights. The optimal path is determined by taking two sets of vertices and transforming undiscovered vertices into discoverable ones. Our experimental results show that the model is highly accurate, and requires only a few measurement data to confirm the optimal path. The model provides an effective, feasible, and convenient method to obtain weights for different road sections, and can be applied to road planning in intelligent transportation systems.

关键词： fuzzy integrated weights ovtimization vertices

New design simulation for a high-altitude dual-balloon system to extend lifetime and improve floating performance

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Chinese Journal of Aeronautics 2018年第5期31卷 1109-1118页

作者： Sherif SALEH Weiliang HE Aviation and Aerospace science Division Military Technical College School of Astronautics Beihang University

This paper presents a comprehensive simulation for a high-altitude dual-balloon system which consists of zero-and super-pressure balloons. Preliminary calculations were established to describe the basic concept of the new integrated system. A mathematical model was investigated to simulate the ascending and floating processes which considered the atmospheric conditions and thermodynamic variations. Based on the simulation, results showed that the floating altitude stability between daytime and nighttime was improved. This integrated system supports higher floating altitude levels than those of ordinary balloons and extends the lifetime of floating balloon systems. Moreover, results demonstrated that the integrated system was lighter than ordinary balloons, saving useful weight for effective payload. Furthermore, exploiting the advantages of both kinds of balloons while avoiding the difficulties was a significant goal in the current design to promote the floating performance of high-altitude balloons technology.

关键词： Altitude stability Ascending trajectory Compressor performance High altitude balloons Long endurance

What emotion dimensions can affect working memory performance in healthy adults?A review

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World Journal of Clinical Cases 2022年第2期10卷 401-411页

作者： Tian-Ya Hou Wen-Peng Cai faculty of Psychology The Second Military Medical UniversityShanghai 200433China

Due to the critical roles of emotion and working memory in our daily activities,a great deal of attention has been given to how emotion influences working memory *** the association between emotion and working memory is relatively well established,whether mood enhances or impairs working memory performance remains *** present review provides a relatively representative overview of the research on the effect of different dimensions of emotion on working memory among healthy adults spanning a 30-year *** findings show that the valence,arousal and motivational dimensions of emotion could all exert an impact on working memory *** impact of emotion on working memory might be modulated by task relevance,emotion type,working memory paradigms and individual *** vast majority of the studies regarding the effect of emotion on working memory performance focused on the impact of negatively valenced affect and yielded highly contradictory *** impacts of arousal and motivation on working memory have been less explored,and inconsistent findings have also been *** explanations are *** research on the effect of certain dimensions of emotion on working memory has suffered from a lack of control of other emotional dimensions,and different aspects of working memory have been investigated by various *** for further studies should include the exploration of specific dimensions of emotion on different aspects of working memory,with the other dimensions being well controlled.

关键词： Working memory Emotion Valence Arousal Motivation Review

Neoadjuvant treatment of pancreatic ductal adenocarcinoma:Whom,when and how

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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1223-1230页

作者： Nebojsa Manojlovic Goran Savic Stevan Manojlovic Clinic for Gastroenterology and Hepatology Military Medical AcademyFaculty of Medicine of the Military Medical AcademyUniversity of DefenceBelgrade 11000Serbia military Medical Academy Faculty of Medicine of the Military Medical AcademyUniversity of DefenceBelgrade 11000Serbia faculty of Medicine University of BelgradeBelgrade 11000Serbia

Pancreatic ductal adenocarcinoma(PDAC),which is notorious for its aggressiveness and poor prognosis,remains an area of great unmet medical need,with a 5-year survival rate of 10%-the lowest of all solid *** diagnosis,only 20%of patients have resectable pancreatic cancer(RPC)or borderline RPC(BRPC)disease,while 80%of patients have unresectable tumours that are locally advanced pancreatic cancer(LAPC)or have distant *** 60%of patients who undergo upfront surgery for RPC are unable to receive adequate adjuvant chemotherapy(CHT)because of postoperative complications and early cancer *** important paradigm shift to achieve better outcomes has been the sequence of therapy,with neoadjuvant CHT preceding *** surgical stages have emerged for the preoperative assessment of nonmetastatic pancreatic cancers:RPC,BRPC,and *** main goal of neoadjuvant treatment(NAT)is to improve postoperative outcomes through enhanced selection of candidates for curative-intent surgery by identifying patients with aggressive or metastatic disease during initial CHT,reducing tumour volume before surgery to improve the rate of margin-negative resection(R0 resection,a microscopic margin-negative resection),reducing the rate of positive lymph node occurrence at surgery,providing early treatment of occult micrometastatic disease,and assessing tumour chemosensitivity and tolerance to treatment as potential surgical *** this editorial,we summarize evidence concerning NAT of PDAC,providing insights into future practice and study *** research is needed to establish predictive biomarkers,measures of therapeutic response,and multidisciplinary stra tegies to improve patient-centered outcomes.

关键词： Pancreatic adenocarcinoma Neoadjuvant treatment Chemotherapy Upfront surgery Radiotherapy Response evaluation

Adsorption-oxidation of hydrogen sulfide on Fe/walnut-shell activated carbon surface modified by NH_3-plasma

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Journal of Environmental sciences 2018年第2期30卷 216-226页

作者： Ping Ning Sijian Liu Chi Wang Kai Li Xin Sun Lihong Tang Gui Liu faculty of Environmental science and Engineering Kunming University of Science and Technology faculty of Chemical Engineering Kunming University of Science and Technology

Walnut-shell activated carbon（WSAC） supported ferric oxide was modified by non-thermal plasma（NTP）, and the removal efficiency for hydrogen sulfide over Fe/WSAC modified by dielectric barrier discharge（DBD） was significantly promoted. The sample modified for10 min and 6.8 k V output（30 V input voltage） maintained 100% H2 S conversion over a long reaction time of 390 min. The surface properties of adsorbents modified by NTP under different conditions were evaluated by the methods of X-ray photoelectron spectroscopy（XPS）, Brunauer–Emmett–Teller（BET） analysis and in-situ Fourier transform infrared spectroscopy（FTIR）, to help understand the effect of the NTP treatment. NTP treatment enhanced the adsorption capacity of Fe/WSAC, which could due to the formation of micro-pores with sizes of0.4, 0.5 and 0.75 nm. XPS revealed that chemisorbed oxygen changed into lattice oxygen after NTP treatment, and lattice oxygen is beneficial for H2 S oxidation. From the in-situ FTIR result,transformation of the reaction path on Fe/WSAC was observed after NTP modification. The research results indicate that NTP is an effective method to improve the surface properties of the Fe/WSAC catalyst for H2 S adsorption-oxidation.

关键词： Dielectric barrier discharge Non-thermal plasma Surface modification Hydrogen sulfide Fe/walnut-shell activated carbon(Fe/WSAC)