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Reversible phase transition poly(benzyl methacrylate)/ionic liquid electrolytes for effective overheating protection in lithium batteries

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Journal of Energy Chemistry 2025年第2期101卷 76-86页

作者： Qian Yu Wei Sun Jialing Zhu Haoxiang Li Shuai Wang Longqing Huang Qian Qiu Haoran Tian He Miao Fu Wang Chunfei Zhang Jinliang Yuan Lan Xia Ningbo innovation Team on New Energies and Marine Applications Faculty of Maritime and Transportation Ningbo University Technical University of Munich TUM School of Natural Sciences Department of Physics Chair for Functional Materials

Battery safety is influenced by various factors,with thermal runaway being one of the most significant *** most studies have concentrated on developing one-time,self-activating mechanism for thermal protection,such as temperature-responsive electrodes,and thermal-shutdown separators,these methods only provide irreversible ***,reversible temperature-sensitive electrolytes have emerged as promising alternatives,offering both thermo-reversibility and self-protective ***,further research is crucial to fully understand these thermal-shutdown *** this study,we propose lower critical solution temperature(LCST) phase behavior poly(benzyl methacrylate)/imidazolium-based ionic liquid mixtures to prepare temperature-sensitive electrolytes that provide reversible thermal shutdown protection of *** electrolyte features an appropriate protection temperature(～105℃) and responds quickly within a 1 min at 105℃,causing cells to hardly discharge as the voltage suddenly drops to 3.38 V,and providing efficient thermal shutdown protection within 30 *** cooling back to room temperature,the battery regains its original ***,the electrolyte exhibits excellent cycling stability with the capacity retention of the battery is 91.6% after 500 *** work provides a viable solution for preventing batteries from thermal runaway triggered by overheating.

关键词： Ionic liquid Lithium-ion battery Lower critical solution temperature Overheating Safety Thermal runaway

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Validity of the French version of Catquest-9SF and use of an electronic notepad for entering patient-reported outcome measures

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Eye and Vision 2021年第1期8卷 92-100页

作者： Gregory Katz Alexandra Rouquette François Lignereux Thierry Mourgues Michel Weber Mats Lundström chair of innovation&value in health University of Paris School of MedicineParisFrance value-Based health Care Consortium ParisFrance Prom-Time ParisFrance Service de SantéPublique et d’Épidémiologie AP-HP Paris-SaclayLe Kremlin-BicêtreFrance Centre de recherche enÉpidémiologie et Santédes Populations InsermUniversitéParis-SaclayVillejuifFrance Ophtalmologie Chénieux Polyclinique de LimogesLimogesFrance Institut Ophtalmologique Sourdille-Atlantique Elsan SantéAtlantiqueNantesFrance Ophthalmology Department Centre Hospitalier-Universitaire de NantesNantesFrance Department of Clinical Sciences OphthalmologyFaculty of MedicineLund UniversityLundSweden

Background:The Catquest-9SF questionnaire is a patient reported outcome measure that quantifies the visual benefits from cataract *** purpose of this study was to translate and adapt the Catquest-9SF questionnaire for France,to assess its psychometric properties via Rasch analysis,and to assess its validity when completed using an electronic ***:The Catquest-9SF questionnaire was translated following the guidelines of the International Society for Pharmacoeconomics and Outcomes ***-9SF and clinical data were collected from patients before and after routine cataract *** questionnaire data were collected via an electronic *** analysis was performed to assess psychometric properties,and sensitivity to change was analysed for patients with complete paired pre-and post-operative ***:A complete filled-in preoperative questionnaire was obtained for 848 *** analysis showed good precision(person separation:2.32,person reliability:0.84),ordered category probability curves,no item misfit,and *** respondents were slightly more able than the level of item difficulty(targeting:−1.12 logits).Sensitivity was analysed on 211 paired questionnaires,and the postoperative questionnaires showed a clear ceiling *** effect size was *** use of an electronic notepad for completing the questionnaire worked out very well after some ***:The French version of Catquest-9SF has good psychometric properties and is suitable for use in French-speaking *** use of the Catquest-9SF questionnaire in an electronic format showed good validity.

关键词： Cataracts Patient-related outcome measures Quality of life Questionnaire value-based health care Catquest-9SF

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Microstructural evolution during tempering process and mechanical properties of Cr-Ni-Mo-V/Nb high strength steel

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Journal of Iron and Steel Research International 2025年第1期32卷 270-281页

作者： Zi-wei Lv Jing Fan Rui Wang Zhi-qiang Yu Yan Kang Yong Hu Lei-feng Tuo Jürgen Eckert Zhi-jie Yan School of Materials Science and Engineering North University of ChinaTaiyuan 030051ShanxiChina Shanxi Key Laboratory of Advanced Metal Materials for Special Environments North University of ChinaTaiyuan 030051ShanxiChina School of Materials Science and Engineering Taiyuan University of Science and TechnologyTaiyuan 030024ShanxiChina Erich Schmid Institute of Materials Science Austrian Academy of SciencesLeoben 8700Austria Department of Materials Science Chair of Materials PhysicsMontanuniversitat LeobenLeoben 8700Austria

High strength steels exhibit superior mechanical properties due to the unique microstructure,which successfully solves the drawback of the inevitable strength-toughness trade-off that occurs in traditional *** we investigated the effect of matrix and precipitates on mechanical properties of Cr-Ni-Mo-V/Nb steel after water quenching and tempering(150-500℃).The results showed that the microstructure of the present steel is noticeably tuned by changing the tempering *** excellent combination of strength(a yield strength of 1308 MPa with a total elongation of 8.2%)and toughness(Charpy V-notch impact toughness of 40.5 J/cm^(2))is obtained upon tempering at 200℃.This is attributed to the lath martensite containing high dislocation density,the martensite-twin substructure,and the strengthening effects of the precipitated needle-likeε-carbides and spherical VC *** acicularε-carbides are replaced by the rod-shaped Fe_(3)C at the tempering temperature of 350℃,resulting in the remarkable deterioration in strength,hardness,and *** carbides formed at a tempering temperature of 500℃ are beneficial to the enhancement of the elongation and toughness,but the strength decreases due to the matrix softening caused by the recovery of dislocation.

关键词： High strength steel Tempering Microstructure Carbide Mechanical property

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Design of multifunctional interfaces on ceramic solid electrolytes for high-performance lithium-air batteries

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Green Energy & Environment 2025年第1期10卷 183-192页

作者： Yunxin Shi Ziyang Guo Changhong Wang Mingze Gao Xiaoting Lin Hui Duan Yonggang Wang Xueliang Sun College of Energy Material and Chemistry College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot010021China Department of Mechanical and Materials Engineering Western UniversityLondonONN6A 5B9Canada Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New EnergyiChEM(Collaborative Innovation Center of Chemistry for Energy Materials)Fudan UniversityShanghai200433China Eastern Institute for Advanced Study Eastern Institute of TechnologyNingboZhejiang315100China

High-energy-density lithium(Li)–air cells have been considered a promising energy-storage system,but the liquid electrolyte-related safety and side-reaction problems seriously hinder their *** address these above issues,solid-state Li–air batteries have been widely ***,many commonly-used solid electrolytes generally face huge interface impedance inLi–air cells and also showpoor stability towards ambient air/Li ***,we fabricate a differentiating surface-regulated ceramic-based composite electrolyte(DSCCE)by constructing disparately LiI-containing polymethyl methacrylate(PMMA)coating and Poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)layer on both sides of Li_(1.5)Al_(0.5)Ge_(1.5)(PO_(4))_(3)(LAGP).The cathode-friendly LiI/PMMA layer displays excellent stability towards superoxide intermediates and also greatly reduces the decomposition voltage of discharge products in Li–air ***,the anode-friendly PVDF-HFP coating shows low-resistance properties towards ***,Li dendrite/passivation derived from liquid electrolyte-induced side reactions and air/I-attacking can be obviously suppressed by the uniformand compact composite *** a result,the DSCCE-based Li–air batteries possess high capacity/low voltage polarization(11,836mAh g^(-1)/1.45Vunder 500mAg^(-1)),good rate performance(capacity ratio under 1000mAg^(-1)/250mAg^(-1) is 68.2%)and longterm stable cell operation(~300 cycles at 750 mA g^(-1) with 750 mAh g^(-1))in ambient air.

关键词： Li-air batteries Li_(1.5)Al_(0.5)Ge_(1.5)(PO_(4))_(3) Polymers Composite electrolyte Ambient air

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Numerical Simulation and Analysis of Heat Treatment Processes on AISI 1025 Steel Produced by Laser Engineered Net Shaping

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Modeling and Numerical Simulation of Material Science 2025年第1期15卷 1-15页

作者： Elphas Tum Rehema Ndeda James Mutua Raghupatruni Prasad Eyitao Olakanmi Sisa Pityana Department of Mechatronic Engineering Jomo Kenyatta University of Agriculture and Technology Juja Kenya Department of Mechanical Energy and Industrial Engineering Botswana International University of Science and Technology Palapye Botswana Advanced Manufacturing and Engineering Education (AMEE) Research Group Botswana International University of Science and Technology Palapye Botswana UNESCO chair on Sustainable Manufacturing and innovation Technologies (UCoSMIT) Team Botswana International University of Science and Technology Palapye Botswana Department of Mechanical Engineering Jomo Kenyatta University of Agriculture and Technology Juja Kenya Department of Chemical Materials and Metallurgical Engineering Botswana International University of Science and Technology Palapye Botswana National Laser Centre Council for Scientific and Industrial Research Pretoria South Africa

Heat treatment processes, such as annealing and quenching, are crucial in determining residual stress evolution, microstructural changes and mechanical properties of metallic materials, with residual stresses playing a greater role in the performance of components. This paper investigates the effect of heat treatment on residual stresses induced in AISI 1025, manufactured using LENS. Finite element model was developed and simulated to analyze residual stress development. AISI 1025 samples suitable for tool and die applications in Fused Deposition Modelling (FDM) filament production, were fabricated using Laser Engineered Net Shaping (LENS) process, followed by heat treatment where annealing and quenching processes were done. The material’s microstructure, residual stress and hardness of heat-treated samples under investigation, were compared against the as-built samples. The results indicated that after annealing, tensile residual stresses were reduced by 93%, resulting in a reduced crack growth rate, compared to the as-built sample, although the hardness was reduced significantly by 25%. On the other hand, high tensile residual stresses of 425 ± 14 MPa were recorded after quenching process with an improvement of hardness by 21%.

关键词： Heat Treatment Residual Stresses Hardness Microstructure Numerical Simulation

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MOHAWK COLLEGE’S NET ZERO ENERGY AND ZERO CARBON BUILDING-A LIVING LAB FOR HIGH EFFICIENCY AND RENEWABLE ENERGY TECHNOLOGIES IN BUILDINGS

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Journal of Green Building 2020年第1期15卷 187-214页

作者： Rutul Bhavsar Anthony Cupido Mariano Arriaga Student Energy and Power Innovation CentreMohawk CollegeHamilton OntarioCanada Sustainability Research chair Mohawk CollegeHamilton OntarioCanadatony. General Manager&corresponding author Energy and Power Innovation CentreMohawk CollegeHamilton OntarioCanada

In recent years,large high efficiency and Net-Zero Energy Buildings(NZEB)are becoming a reality that are setting construction and energy benchmarks for the *** part of this significant effort,in 2018,Mohawk College opened the 8,981 m^(2)(96,670 ft2)Joyce Centre for Partnership and innovation(JCPI)building in Hamilton,Ontario;becoming Canada’s largest NZEB and zero-carbon institutional *** building integrated a high-efficiency design,construction materials,and technologies;as well as renewable energy technologies to significantly reduce its annual energy consumption and greenhouse gas ***,the JCPI building was also designed as a living lab where students,faculty,researchers and industry are able to monitor and validate the performance of this state-of-the-art *** building was designed to have an energy use intensity of 73 kWh/m^(2)·year(0.26 GJ/m^(2)·year);hence,potentially consuming approximately 80%less energy than the average educational service building in *** paper gives an overview of the design criteria and technologies that were considered to achieve this innova-tive building.

关键词： energy efficiency energy use intensity greenhouse gas emissions net zero energy building renewable energy zero carbon building

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创新联盟的动机与利益-一个实证研究

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科研管理 2004年第z1期25卷 152-157页

作者： Ricarda B.Bouncken chair for Planning and innovation Management Brandenburg Technical Institute

联盟是可以促进创新的。本文通过对70多个研发联盟的生物技术公司的实践研究表明,节约时间、共担风险及专业化是联盟的主要动机,并且这些动机对基础创新有积极的影响。但是过分的依靠联盟伙伴就会束缚自身能力的发挥,数据表明不同的联... 详细信息

联盟是可以促进创新的。本文通过对70多个研发联盟的生物技术公司的实践研究表明,节约时间、共担风险及专业化是联盟的主要动机,并且这些动机对基础创新有积极的影响。但是过分的依靠联盟伙伴就会束缚自身能力的发挥,数据表明不同的联盟形式对于创新绩效会有不同的影响。

关键词：合作生物技术创新

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Why do CuAl catalysts outperform in CO_(2) electro-reduction to C_(2)H_(4)?

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Science China Chemistry 2025年第2期68卷 763-771页

作者： Dongfang Cheng Gong Zhang Lulu Li Xiangcheng Shi Wenjin Zhu Xintong Yuan Lyudmila Moskaleva Peng Zhang Zhi-Jian Zhao Jinlong Gong Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin University Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)Tianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207China Department of Chemistry University of the Free StateBloemfontein 9301South Africa Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China National Industry-Education Platform of Energy Storage Tianjin UniversityTianjin 300350China International Joint Laboratory of Low-carbon Chemical Engineering Tianjin 300192China Tianjin Normal University Tianjin 300387China

Highly efficient CO_(2) electroreduction(CO_(2)RR)holds the promise of closing the carbon ***,the strategies for enhancing activity and selectivity for single C2+ products are still *** paper describes the oxophilicity of doped metals on copper(Cu)as a key descriptor for predicting the selectivity in the production of ethylene and ethanol in CO_(2)*** findings reveal a volcano-like relationship between the*O binding energy and catalytic activity,with aluminum(Al)-doped Cu alloys situated at the *** strong Al–O bond facilitates C–O bond cleavage,thereby promoting C_(2)H_(4) *** grand canonical density functional theory(GCDFT)calculations,we elucidate the significance of strong oxygen affinity in enhancing*CO_(2) adsorption,leading to its activation into a bidentate-adsorbed ***,our results demonstrate that Al doping promotes C–C coupling by altering the adsorption mode of the key intermediate *OCCO,shifting it from a less favorable boattype to a more stable chair-type *** modification significantly contributes to the improved catalytic activity for C2+products on CuAl *** research provides a detailed mechanistic insight into the high activity and selectivity observed in CO_(2)RR to ethylene on CuAl catalysts,underscoring the critical role of metal oxophilicity in enhancing CO_(2)RR performance.

关键词： CO_(2)RR dilute alloy descriptor surface oxophilicity

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Audio Enhancement for Computer Audition—An Iterative Training Paradigm Using Sample Importance

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Journal of Computer Science & Technology 2024年第4期39卷 895-911页

作者： Manuel Milling Shuo Liu Andreas Triantafyllopoulos Ilhan Aslan Björn W.Schuller chair of Embedded Intelligence for health Care and Wellbeing University of AugsburgAugsburg 86159Germany chair of health Informatics München rechts der IsarTechnical University of MunichMunich 81675Germany Munich Center for Machine Learning Munich 80333Germany Huawei Technologies MunichMunich 80992Germany Munich Data Science Institute Garching 85748Germany Group on Language Audio and MusicImperial College LondonLondon SW72AZU.K.

Neural network models for audio tasks,such as automatic speech recognition(ASR)and acoustic scene classification(ASC),are susceptible to noise contamination for real-life *** improve audio quality,an enhancement module,which can be developed independently,is explicitly used at the front-end of the target audio *** this paper,we present an end-to-end learning solution to jointly optimise the models for audio enhancement(AE)and the subsequent *** guide the optimisation of the AE module towards a target application,and especially to overcome difficult samples,we make use of the sample-wise performance measure as an indication of sample *** experiments,we consider four representative applications to evaluate our training paradigm,i.e.,ASR,speech command recognition(SCR),speech emotion recognition(SER),and *** applications are associated with speech and nonspeech tasks concerning semantic and non-semantic features,transient and global information,and the experimental results indicate that our proposed approach can considerably boost the noise robustness of the models,especially at low signal-to-noise ratios,for a wide range of computer audition tasks in everyday-life noisy environments.

关键词： audio enhancement computer audition joint optimisation multi-task learning voice suppression

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Operando electrochemical SERS monitors nanoparticle reactions by capping agent fingerprints

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Nano Research 2022年第5期15卷 4517-4524页

作者： Kevin Wonner Steffen Murke Serena RAlfarano Pouya Hosseini Martina Havenith Kristina Tschulik chair of Analytical Chemistry Ⅱ Faculty of Chemistry and BiochemistryRuhr University BochumBochum 44801Germany chair of Physical Chemistry Ⅱ Faculty of Chemistry and BiochemistryRuhr University BochumBochum 44801Germany

Nanomaterials are frequently employed in daily life goods,including health,textile,and food industry.A comprehensive picture is lacking on the role of the capping agents,added ligand molecules,in case of nanoparticle reactions and degradation in aqueous solutions,like surface waters or ***,we aim to elucidate the capping agent influence on nanoparticle reactivity probing two commonly employed capping agents citrate and polyvinylpyrrolidone(PVP).Their influence on silver nanoparticle(AgNP)transformation is studied,which is particularly important due to its application as an antimicrobial *** induce oxidation and reduction processes of AgNPs in halide solutions and we monitor the associated transformations of particles and capping agents by spectro-electrochemical surface-enhanced Raman spectroscopy(SERS).Raman bands of the capping agents are used here to track chemical changes of the nanoparticles under operando *** sparingly soluble and non-plasmon active silver salts(AgBr and AgCl)are formed under potential *** addition,we spectroscopically observe plasmon-mediated structural changes of citrate to cis-or trans-aconitate,while PVP is *** different behavior of the capping agents implies a change in the physical properties on the surface of AgNPs,in particular with respect to the surface ***,we showcase that reactions of the capping agents induced by different external stimuli,such as applied bias or laser irradiation,can be *** results demonstrate how SERS of capping agents can be exploited to operando track nanoparticle conversions in liquid *** approach is envisaged to provide a more comprehensive understanding of nanoparticle fates in complex liquid environments and varied redox conditions.

关键词： capping agent electrochemical surface-enhanced Raman spectroscopy silver nanoparticle nanoparticle reaction

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