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low cost and low density chloride solid electrolyte for all solid state cathode with high active material ratio

Nano Research 2024年第10期17卷 8826-8833页

作者： Hao-Yuan Tan Mei-Yu Zhou Zhongyuan Huang Jin-Da Luo Jing-Tian Yang Jian-Ping Wang Ye-Chao Wu Xiao-Bin Cheng Zi-Wei Wang Xu-Dong Hao Linjun Wang Ke Gong Yi-Chen Yin Yinguo Xiao Hong-Bin Yao Hefei National Research Center for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China Department of Applied Chemistry University of Science and Technology of ChinaHefei 230026China School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China

Chloride solid electrolytes(SEs)have attracted widespread attention due to their high room-temperature ionic conductivity and excellent cathode ***,the conventionally selected central metal elements(e.g.,In,Y and Ta)are usually rare and heavy,inevitably causing the high cost and high density of the obtained chloride ***,by choosing abundant and light Mg and Al as central metal elements,we develop a cheap and low density Li_(1.2)Mg_(0.95)Al_(0.3)Cl_(4)SE for high active material ratio in all solid state *** replacement of Mg^(2+)by Al^(3+)in the framework yields vacancies and lowers the non-lithium metal ions occupancy at Mg/Li co-occupied 16d site,effectively relieving the blocking effects by Mg^(2+)in the pristine spinel Li_(2-2x)Mg_(1+x)Cl_(4).Thus,a significantly improved room-temperature conductivity of 3.08×10^(-4)S·cm^(-1)is achieved,two orders of magnitude higher than that of Li_(1.2)Mg_(1.4)Cl_(4).More attractively,its low density of only 1.98 g·cm-3 enables low SE mass ratio in cathodes(only 16 wt.%)with still effective electrolyte/cathode contact and lithium-ion conduction *** charged to potential of 4.30 V,the asfabricated Li_(1.2)Mg_(0.95)Al_(0.3)Cl_(4)-based solid lithium battery with uncoated NCM523 cathode can be cycled for over 100 cycles with a capacity retention of 86.68%at room temperature.

关键词： chloride solid electrolytes low cost low density Li+conductivities

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Study on low density and Heat-resistant Ablative Coating

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Chinese Journal of Aeronautics 2005年第4期18卷 372-377页

作者：郑天亮邹京城宇波王月红张华 School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics Beijing 100083 China

low bulk density expanding vermiculite is prepared, and the surface modification of hollow Al2O3-SiO2 microspheres and the composition of the low density ablative coating are studied. Organic silicon epoxy resin and phenolic aldehyde resin are applied as film forming matters to get a series of ablative coating having a density of 0.4-0.6 g/cm^3. The performance of the low density ablative coating is evaluated by mechanical, thermodynamic and oxygen acetylene ablation tests, and the results are as follows, adhesion is in the range of 2.97-4.63 MPa, conductivity is no more than 0.1 kcal/（m·h·℃ ）, line ablation rate is no more than 0.30 mm/s, mass ablation rate is in the range of 0.11-0.18 mm/s.

关键词： low density ablative coating modification filler

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Identification of low density Polyurethane Foam Properties by the Digital Image Correlation Measurement and the Virtual Fields Method

Identification of Low Density Polyurethane Foam Properties b...

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International Conference on Experimental Mechanics 2008 (ICEM 2008)

作者： Fabrice Pierron LMPF ENSAMRue St DominiqueBP 50851006 Ch■lons-en-Champagne CedexFrance

＜正＞This paper deals with the identification of the constitutive behavior of low density polyurethane foam using digital image correlation（DIC） and the virtual fields *** the so-called Iosipescu flexion tests in t... 详细信息

关键词： low density polyurethane foam digital image correlation great deformation image processing virtual fields method auxetic

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Ultrahigh tensile strength achieved in a lightweight medium Mn steel via prominent work hardening

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Journal of Materials Science & Technology 2023年第14期145卷 156-164页

作者： Bin Hu Guohui Shen Zheng Wang Shilei Li Yandong Wang Haiwen Luo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China

We develop a new ultrastrong medium Mn steel with a density reduced to 7.39 g cm^(-3).It has a novel tri-phase microstructure comprising a hierarchical martensitic matrix(α’),dispersed ultra-fine-retained austenite grains(γ),and both compressed and{200}orientedδ-ferrite lamellas,the latter’s formation is due to the alloying of high Al and Si contents for reducing *** a result,both ultrahigh ultimate tensile strength of 2.1 GPa and good ductility of 16%are achieved after an extraordinary plastic strain hardening increment of about 1.4 *** in-situ synchrotron-based high-energy(HE)X-ray diffraction(XRD)examinations during the tensile deformation revealed that the initial presence of residual com-pressive stress inδ-ferrite could increase the stress required to initiate the plastic tensile deformation of the specimen,leading to the isolatedδ-ferrite lamellas mostly deformed elastically to coordinate the plastic deformation of the martensitic matrix during *** the plastic deformation,the gradual release of residual compressive stress inδandα’,the dislocation multiplication in all the three phases and the successiveγ-to-α’transformation all contribute to such a prominent work hardening *** study facilitates the development of novel strategies for fabricating ultrastrong but light steels.

关键词： Medium mn steels low density △-ferrite Strain hardening Transformation induced plasticity

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Effect of Ti content on microstructure and properties of TixZrVNb refractory high-entropy alloys

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International Journal of Minerals,Metallurgy and Materials 2020年第10期27卷 1318-1325页

作者： Tian-dang Huang Shi-yu Wu Hui Jiang Yi-ping Lu Tong-min Wang Ting-ju Li Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China College of Mechanical and Electronic Engineering Shandong University of Science and TechnologyQingdao 266590China

This study aimed to investigate the microstructure and mechanical properties of TixZrVNb(x=1,1.5,2)refractory high-entropy alloys at room and elevated *** TiZrVNb alloy consisted of the body-centered cubic(bcc)matrix with a small amount of V2Zr *** Ti1.5ZrVNb and Ti2ZrVNb alloys exhibited a single-phase bcc *** room temperature,the tensile ductility of the as-cast alloys increased from 3.5%to 12.3%with the increase in the Ti *** TixZrVNb alloys exhibited high yield strength at 600°C,and the ultimate yield strength was more than 900 *** occurred at 800°C,but the ultimate yield strength could still exceed 200 ***,the TixZrVNb alloys displayed low densities but high specific yield strengths(SYSs).The lowest density of TixZrVNb alloys was only 6.12 g/cm^3,but the SYS could reach about 180 MPa·cm^3·g^−1,which is better than those of most reported high-entropy alloys(HEAs).

关键词： high-entropy alloys mechanical properties low density elevated temperature

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Amorphous Polylactide Bead Foam–Effect of Talc and Chain Extension on Foaming Behavior and Compression Properties

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Journal of Renewable Materials 2021年第11期9卷 1859-1868页

作者： Christian Brütting Julia Dreier Christian Bonten Volker Altstädt Holger Ruckdäschel Department of Polymer Engineering University BayreuthBayreuth95447Germany Institut für Kunststofftechnik University of StuttgartStuttgart70569Germany

Polylactide(PLA)bead foams show a high potential regarding their applicability in packaging or consumer *** the comparable properties of PLA to Polystyrene(PS)and the good CO_(2) footprint it represents a potential alternative to petroleum-based polymer ***,foaming of PLA is challenging,due to its low melt strength,therefore chemical modifiers are often *** the bead foam technology regarding PLA,the available literature is limited so *** this study,the bead foaming behavior of neat and modified amorphous PLA was *** material was modified by talc and an epoxy-based chain *** compounds have been investigated regarding their sorption behavior in CO_(2) atmosphere and their foaming *** was conducted by using the batch foaming method based on a rapid temperature increase after saturation with CO_(2).In order to achieve welded bead foams,a one-step processing for foaming and welding has been ***,the compression properties of the PLA bead foams have been *** below 50 kg/m^(3) for single bead foams and 80 kg/m^(3) for molded foams were achieved,respectively.

关键词： Polylactide biofoam bead foam CO_(2) low density

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A light-weight high-entropy alloy Al_(20)Be_(20)Fe_(10)Si_(15)Ti_(35)

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Science China(Technological Sciences) 2018年第2期61卷 184-188页

作者： tseng kokai yang yachu juan chienchang chin tsungshune tsai chewei yeh jienwei department of materials science and engineering 'national'tsing hua universityHsinchu 300TaiwanChina

A light-weight high-entropy alloy （LWHEA） A120Be20Fe10SilsTi35 has been developed to have unique mechanical properties and oxidation resistance. One major and two minor phases are observed in the as-east microstructure. The density of the alloy is 3.91 gcm-3, and its hardness is HV 911, which is higher than quartz. The hardness and hardness to density ratio are the highest of all light-weight alloys reported before. In addition, it has excellent oxidation resistance at 700℃ and 900℃, which far exceeds that of Ti-6A1-4V. Thus, the combination of properties is promising for high-temperature applications, which require light weight, wear-resistant and oxidation-resistant components.

关键词： high-entropy alloy light weight low density oxidation resistance

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Preparation of Novel Core-shell Non-sintered Lightweight Aggregate and Its Application in Wallboard for Better Properties

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Journal of Wuhan University of Technology(Materials Science) 2022年第5期37卷 840-848页

作者： PANG Chaoming ZHANG Chunpeng MENG Xinxin PAN Jinlong School of Material Science and Engineering Southeast UniversityJiangsu Key Laboratory of Construction MaterialsNanjing211189China Commercial Aircraft Corporation Shanghai Aircraft Manufacturing Co.Ltd.Shanghai200436China School of Civil Engineering Southeast UniversityKey Laboratory of Concrete and Prestressed Concrete Structure of the Ministry of EducationNanjing211189China

Due to the relatively high density of conventional non-sintered lightweight aggregate(NLA),a low-density core-shell NLA(CNLA) was ***,two types of porous lightweight aggregate concrete (PLAC) for wallboard were designed,using both foam and lightweight *** effects of LA on lightweight concrete workability,compressive strength,dry shrinkage,and thermal conductivity were studied and *** bulk density of CNLA can be lowered to 500 kg/m^(3),and its cylinder crushing strength is 1.6 *** also have compressive strengths ranging from 7.8 to 11.8 MPa,as well as thermal conductivity coefficients ranging from 0.193 to 0.219 W/(m·K^(-1)).The CNLA bonds better to the paste matrix at the interface transition zone,and CNLA concrete has a superior pore structure than SLA concrete,resulting in a 20% improvement in fluidity,a 10% increase in strength,a 6% reduction in heat conductivity,and an 11% decrease in drying shrinkage.

关键词： core-shell non-sintered lightweight aggregate(CNLA) porous lightweight aggregate concrete(PLAC) low density thermal insulation drying shrinkage pore structure

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Blood Lipids and other Related Risk Factors of stroke

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中国临床神经科学 2000年第Z1期8卷 71-页

作者： Liu YAND Hiu Lu Hospital of Tian Jin 300123 Hospital of Tian Jin300123

Abstract To assess the ralationship between incidence of stroke and blood lipids, apolipoprolcin (apo) , 219 patients with stroke(cerebral hemorrhage 87, cerebral infarction 132) , diagnosed with the aid of CT, were examined. The levels of serum total cholesterol, triglycerioes, apo-A, apo-B were calculatea. 160 cases with no disorder in metabolism of blood lipids or other disease of meurologic system were taken as centrol group. The results zhowed that the ratio of high density lipoprotein cholesterol and low clensity lipoprotein cholesterol was iower *** of control group(p＜0. 05) . In the patients group, cases with diabetes, hypentension coronary heart disease or onesity, the levels of blood liprds. triglyceride and cholesterol were higher than those vithout above mentioned disease The condusion is, that there is certain reletionship between the contents of bliid lipids. lipoprotein and it sulqraction HDL2, HDL3 and cerebrovasculor cisease. The radis of high density lipoprotein and low density lipoprolein is the important factor in predicting of

关键词： high density lipoprotein blood lipids coronary heart disease low density

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Intravenous thrombolytic therapy for acute ischemic stroke (A pilot study in China)

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中国临床神经科学 2000年第Z1期8卷 16-页

作者： Qingtang CHEN, MD First Hospital of Beijing Medical University Beijing 100034 CHINA

Object: To introduce our experience of therapy with T-PA in cerebral infarction in China, contraposed to a French document with a series of 100 cases. Methods: Inclusion criteria were same with Trouillas' protocol. Location attached was limited within the territory of internal carotid artery (ICA). The dose of rT-PA was 0.8-0.85mg/Kg. An initial bolus of 10% of the total dose was infused before 90% of the total dose was dropped byvein over 90 minutes. Calcic Nadroparin was continued after 12 hours ofthrombolysis for 10 days. At same time, 20% of Marnitol was administed according to the disorder state. The Scandinavia Stroke Score (SSS) were utilized to evaluate to the neurological function impaired before and after treatment for 24 hours, one week, one month and 3 months and modified Rankin′s Score (mRS) to the capability of life when 90 days after the ***: (1) Total 16 cases, who come from Shanghai of China, 8 cases of male and 8 cases of female, with 68.44±7.63 years old, were observed. The mean interval is 278.44±73.73 minutes. There are no significant different for baseline SSS, SSS at day 1, Day 7, Day 30 and Day 90 between our data and the data published. (P ＞0.05) In our group, there are 5 cases (31.25%) with absolute recovery, 4 cases (25%) with remarkable sequels, 2 cases with incapability himself because obvious sequels and 5 cases died in this group. Our study result is no difference with the document observed on Lyon of French. (P ＞0.05 ) (2) There are 10 cases of baseline SSS＜20. In this subgroup, the prognosis is significant difference with 6 cases of subgroup of baseline SSS ＞20. (P ＜0.05) The worse the SSS of baseline was, the worse prognosis is. No evidence of hemorrhage in the CT scans. It is important causes that result in bad prognosis: serious heart failure and cerebral infarction with great territory. (3) There are 5 cases died in our group. Among them, 60% died within 72 hours and 2 cases died at 4th day. The area of cerebral inf

关键词： ischemic stroke thrombolytic therapy cerebral hemorrhage time window clinical trial blood pressure pilot study low density neurological deficit low molecular weight cerebral infarctions clinical features mortality rate CT scan

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