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2022 2nd International Conference on Fluid and Chemical Engineering, ICFCE 2022

作者： Huang, Liang Xiao, Ming Li, Weilong Bi, Shuguang Tang, Jiagong Luo, Xianmeng Ran, Jianhua Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing & Finishing State Key Laboratory of New Textile Materials and Advanced Processing Technologies College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan430200 China Wuhan Rongshengjimei Technology Co. Ltd. Wuhan430050 China

Steel ring reinforcement technology is an effective method to eliminate the damage of tunnel structure caused by ground load, surrounding foundation pit and underground water source. The grouting material used to fill the gap between the tunnel segment and the steel ring should have the characteristics of low viscosity, high strength, rapid curing at room temperature and anti-subway vibration. In this work, a special polyurethane modified epoxy resin grouting was fabricated to overcome the inherent brittleness of epoxy resin, and was combined with the reactive diluent and the amine curing agent to suit the above applications. The results showed that both tensile and impact strength of epoxy resin grouting modified by polyurethane were improved obviously compared with those without modification, presenting an obvious toughening effect. Although the viscosity increased slightly, it can still meet the perfusion requirements of steel ring reinforcement of subway tunnels. © Published under licence by IOP Publishing Ltd.

关键词： Epoxy resins

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Flexible Fly-Eye-Shaped Triboelectric Nanogenerator for All Directions and Highly Efficient Biomechanical Energy Harvesting and Human Motion Monitoring

SSRN

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SSRN 2024年

作者： Yan, Dali Tao, Dan Xu, Duo Sun, Yirong Deng, Bo Cao, Genyang Fang, Jian Xu, Weilin State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Hubei Wuhan430200 China College of Textile and Clothing Engineering Soochow University Suzhou215123 China

As an environmentally friendly and renewable energy source, triboelectric nanogenerator (TENG) offers a fresh solution to the energy scarcity problem. However, the conventional three-dimensional (3D) TENG, which exhibits heavy angular dependence in energy harvesting, struggles to efficiently capture complex biological kinetic energy in practical applications. This study addresses this challenge by developing a novel flexible fly-eye-shaped triboelectric nanogenerator (F-TENG). In comparison with traditional 3D flexible-based TENG, this generator notably minimizes the angular dependence on motion direction. Particularly for non-vertical mechanical energy harvesting, F-TENG can enhance collection efficiency by 35.5%. Experimental results demonstrate that the open-circuit voltage and current of F-TENG textiles are 3-fold and 2.6-fold higher, respectively than those of conventional 3D flexible-based TENG. Its accuracy in detecting and identifying complex motions reaches 86.8%, marking a 37.8% improvement over traditional 3D-TENG. This study presents a promising perspective on the structural design of all directions and highly efficient biomechanical energy harvesting and its application in the field of intelligent sensing. © 2024, The Authors. All rights reserved.

关键词： textiles

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High Ion-Selectivity of Garnet Solid Electrolyte Enabling Separation of Metallic Lithium

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Energy & Environmental materials 2023年第6期6卷 236-242页

作者： Haitian Zhang Jialiang Lang Kai Liu Yang Jin Kuangyu Wang Yulong Wu Siqi Shi Li Wang Hong Xu Xiangming He Hui Wu Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 10084China School of Materials Science and Engineering State Key Laboratory of New Ceramics and Fine ProcessingTsinghua UniversityBeijing 10084China School of New Energy State Key Laboratory of Alternate Electrical Power System with Renewable Energy SourcesNorth China Electric Power UniversityBeijing 102206China School of Electrical Engineering Research Center of Grid Energy Storage and Battery ApplicationZhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Shanghai University Shanghai 200444China

Ionic selectivity is of significant importance in both fundamental science and practical *** instance,an ion-selective material allows the passage of a particular kind of ions while blocking the others,which could be used for purification of ***,the Li-ion-selectivity of a garnet-type solid electrolyte is discussed by comparing the difference of activation energy between different ions migrating in *** high ion-selectivity is confirmed by harvesting high-purity metallic lithium(99.98 wt%)from low-lithium-purity sources(80 wt%)at a moderate temperature(190℃).This gives it huge potential in separating lithium with impurities especially alkali and alkali-earth *** cost of metallic lithium production is only 25%of the international lithium *** proposed electrochemical metallic lithium separating method is advantageous compared with the traditional process in terms of efficiency,safety,and cost.

关键词： ion separating ionic selectivity lithium metal solid electrolyte

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Ultrathin inorganic-organic solid-state electrolyte reinforced by a prefiberized LAGP continuous skeleton

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Science China materials 2025年第1期68卷 199-206页

作者： Shiya Li Shuhao Wang Gaofeng Du Jianing Liang Zhaoming Tong Yanming Cui Jiu Lin Xiaoxiong Xu Xizheng Liu Tianyou Zhai Huiqiao Li State Key Laboratory of Materials Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China Key Laboratory of Optoelectronic Chemical Materials and Devices(Ministry of Education) School of Optoelectronic Materials&TechnologyJianghan UniversityWuhan 430056China Zhejiang Funlithium New Energy Technology Co. Ltd.Ningbo 315201China

Inorganic-organic composite electrolyte is proved an effective way to enhance the overall performance of the ***,simply combining powder fillers with polymers is not sufficient for the application of composite *** this work,we designed an ultrathin organic-inorganic composite solid electrolyte with high mechanical strength and ionic conductivity,in which the inorganic Li1.5Al0.5Ge1.5(PO_(4))3(LAGP)solid electrolyte is prefiberized into a three-dimensional nanofiber network to serve as a self-supporting skeleton for the polyethylene oxide(PEO)*** continuous skeleton structure not only significantly improves the mechanical strength of the PEO-based electrolyte,but also forms a continuous lithium-ion conduction path,promoting the rapid migration of lithium *** fiber-reinforced composite electrolyte has an ionic conductivity of 8.27×10^(−4) S cm^(-1) at 60°C and a tensile strength of up to 4.29 ***,it exhibits a reduced overpotential and stable long-term cycling performance over 1700 h when used in Li/Li symmetric *** LiFePO_(4)(LFP)|Li cell assembled with the fiber-reinforced composite electrolyte also delivers a specific capacity of about 142 mAh g^(−1) over 300 cycles at 0.5 C and maintains good cycling *** work provides a novel idea for designing the next generation of safe and reliable organic-inorganic composite solid-state electrolyte membranes.

关键词： solid-state lithium metal batteries solid-state electrolytes polymer electrolytes LAGP structure design ultra-thin electrolyte membrane

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Small-Molecular Donor Based Efficient Organic Solar Cells with Thermally Stable Morphologies

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Chinese Journal of Chemistry 2024年第23期42卷 3075-3082页

作者： Wanying Feng Yuyang Bai Jiaying Wang Shaohui Yuan Xiangjian Wan Yu Chen Bin Kan Yongsheng Chen School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin 300350China State Key Laboratory and Institute of Elemento-Organic Chemistry Frontiers Science Center for New Organic MatterThe Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100043China

Small-molecular organic solar cells usually exhibited unsatisfactory device stability,which might originate from their molecular diffusion ***,based on the all-small-molecule system HD-1:BTP-eC9,we reported a dimerized acceptor DC9,and its corresponding monomer acceptor *** comparison with eOD,the dimeric acceptor DC9 displayed higher glass transition temperature(Tg)but reduced molecular planarity and *** all-small molecule blend utilizing HD-1:eOD demonstrated a power conversion efficiency(PCE)of 15.13%,surpassing the value of 14.10%for the HD-1:DC9 ***,incorporating polymer donor PM6 into the HD-1:DC9 blend improved its morphology and charge transport dynamics,resulting in a device efficiency of over 16%,representing the rare case utilizing small-molecular donor and dimeric acceptor with PCE over 16%.Morphological characterization results affirmed that the surface morphologies and molecular packing behaviors of the blend films based on HD-1 were largely retained even after prolonged annealing and aging at 85℃.Consequently,the PCEs of the blend films based on HD-1:eOD,HD-1:DC9,and HD-1:PM6:DC9 consistently remained over 98%of their initial efficiency after 1000 h of thermal annealing aging at 85℃.These findings highlight the potential of small-molecular based active layer in the fabrication of efficient and stable OSCs.

关键词： Organic solar cells Small-molecular donor Small-molecular acceptor Dimeric acceptor Morphological thermal stability

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Thermally insulating and fire-retardant bio-mimic structural composites with a negative Poisson's ratio for battery protection

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Carbon Energy 2023年第12期5卷 83-96页

作者： Fengyin Du Zuquan Jin Ruizhe Yang Menglong Hao Jiawei Wang Gang Xu Wenqiang Zuo Zifan Geng Hao Pan Tian Li Wei Zhang Wei She Jiangsu Key Laboratory of Construction Materials School of Materials Science and EngineeringSoutheast UniversityNanjingPeople's Republic of China School of Mechanical Engineering Purdue UniversityWest LafayetteIndianaUSA State Key Laboratory of High-Performance Civil Engineering Materials Jiangsu Sobute New Materials Co.Ltd.NanjingPeople's Republic of China School of Civil Engineering Qingdao University of TechnologyQingdaoPeople's Republic of China Department of Mechanical and Aerospace Engineering University at BuffaloThe State University of New YorkBuffaloNew YorkUSA School of Energy and Environment Southeast UniversityNanjingPeople's Republic of China Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and EngineeringSoutheast UniversityNanjingPeople's Republic of China

Battery safety has attracted considerable attention worldwide due to the rapid development of wearable electronics and the steady increase in the production and use of electric *** battery failures are often associated with mechanical-thermal coupled behaviors,protective shielding materials with excellent mechanical robustness and flame-retardant properties are highly desired to mitigate thermal ***,most of the thermal insulating materials are not strong enough to protect batteries from mechanical abuse,which is one of the most critical scenarios with catastrophic ***,inspired by wood,we have developed an effective approach to engineer a hierarchical nanocomposite via self-assembly of calcium silicate hydrate and polyvinyl alcohol polymer chains(referred as CSH wood).The versatile protective material CSH wood demonstrates an unprecedented combination of light weight(0.018 g cm-3),high stiffness(204 MPa in the axial direction),negative Poisson's ratio(-0.15),remarkable toughness(6.67×105 J m-3),superior thermal insulation(0.0204 W m-1 K-1 in the radial direction),and excellent fire retardancy(UL94-V0).When applied as a protective cover or a protective layer within battery packages,the tough CSH wood can resist high-impact load and block heat diffusion to block or delay the spread of fire,therefore significantly reducing the risk of property damage or bodily injuries caused by battery *** work provides new pathways for fabricating advanced thermal insulating materials with large scalability and demonstrates great potential for the protection of electronic devices.

关键词： battery protection negative Poisson's ratio thermal insulation toughness wood-inspired materials

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Site-specific fabrication of gold nanocluster-based fluorescence photoswitch enabled by the dual roles of albumin proteins

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Aggregate 2023年第1期4卷 268-276页

作者： Wencheng Zhong Xiaojian Yan Shaohua Qu Li Shang State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene(NPU)Xi’anChina Northwestern Polytechnical University Chongqing Technology Innovation Center ChongqingChina NPU-QMUL Joint Research Institute of Advanced Materials and Structures(JRI-AMAS) Northwestern Polytechnical UniversityXi’anChina

Fluorescence photoswitch is becoming increasingly desirable for many applications,but its controllable fabrication still remains challenging *** this paper,a new strategy is proposed to fabricate fluorescence photoswitch by harnessing dual roles of albumin proteins as both photochrome carriers and biotemplates of *** an example,we demonstrated the successful fabrication of a fluorescence photoswitch by incorporating both the photochromic diarylethene dye(CMTE)and red-emitting fluorescent gold nanoclusters(AuNCs)into the specific domains of bovine serum albumin(BSA)in a highly controllable *** spectral and photophysical characterisation showed that CMTE well-retains the photochromic properties within the CMTE–BSA–AuNC construct,although its photoconversion rate is slightly *** from previously reported photoswitches,the fluorescence of the present system is mainly modulated via the inner filter effect(IFE)mechanism,which exhibits high switching efficiency with an on-off ratio up to 90%,reversible fluorescence response and good antifatigue *** work provides a new,generable albumin protein-assisted strategy of fabricating advanced fluorescence photoswitch,which can find wide applications in biological,optical and information fields.

关键词： albumin protein fluorescence switch gold nanoclusters inner filter effect photochrome

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Single-atom metal-nitrogen-carbon catalysts energize single molecule detection for biosensing

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InfoMat 2023年第6期5卷 44-65页

作者： Xianyang Zhang Pengfei Chen Siwuxie He Bowen Jiang Yong Wang Yonghua Cheng Jian Peng Francis Verpoort John Wang Zongkui Kou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanthe People's Republic of China “ZhuCai”Center of Innovation and Entrepreneurship Wuhan University of TechnologyWuhanthe People's Republic of China West China School of Pharmacy Sichuan UniversityChengduthe People's Republic of China Department of Materials Science and Engineering Faculty of EngineeringNational University of SingaporeSingapore Institute of Materials Research and Engineering A*StarSingapore

Biosensors featuring single molecule detection present huge opportunities as well as challenges in food safety inspection,disease diagnosis,and environmental ***-molecule detection is largely lacking of high enough activity,precision molecule selectivity,and understanding in the exact operating ***-atom catalysts(SACs),especially those metals-nitrogen-carbon that mimic the natural metalloenzyme structure,and with well-defined metal atom bond configurations,high level of molecular selectivity,and easy fabrication,endow single molecule detections with practical-use *** recent advances in single-atom catalysts also present new pathways in the key mechanism *** this short review,we will first visit the brief history and advantages of SACs that have been explored only recently for molecule-scale biosensors,where they are analogous and also differentiated from those nanozymes and natural *** applications in electrochemical,photochemical,and photoelectrochemical sensors are then discussed comprehensively by focusing on the different molecule-scale sensing modes in achieving local coordination-modulated signal ***,we identify new opportunities and challenges faced by these SACs-based single molecule detections in the further development of biosensors.

关键词： biosensors metal-nitrogen-carbon nanozyme single molecule detection single-atom catalysts

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Evolution of pore systems in low-maturity oil shales during thermal upgrading--Quantified by dynamic SEM and machine learning

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Petroleum Science 2024年第3期21卷 1739-1750页

作者： Jun Liu Xue Bai Derek Elsworth Key Laboratory of Deep Underground Science and Engineering(Ministry of Education) Institute of New Energy and Low-Carbon TechnologySichuan UniversityChengdu610065SichuanChina International Quantum Academy Shenzhen518048GuangdongChina Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055GuangdongChina Department of Energy and Mineral Engineering Pennsylvania State University ParkPA 16802USA

In-situ upgrading by heating is feasible for low-maturity shale oil,where the pore space dynamically *** characterize this response for a heated substrate concurrently imaged by *** systematically follow the evolution of pore quantity,size(length,width and cross-sectional area),orientation,shape(aspect ratio,roundness and solidity)and their anisotropy—interpreted by machine *** indicate that heating generates new pores in both organic matter and inorganic ***,the newly formed pores are smaller than the original pores and thus reduce average lengths and widths of the bedding-parallel pore ***,the average pore lengths and widths are increased in the bedding-perpendicular ***,heating increases the cross-sectional area of pores in low-maturity oil shales,where this growth tendency fluctuates at<300℃ but becomes steady at>300℃.In addition,the orientation and shape of the newly-formed heating-induced pores follow the habit of the original pores and follow the initial probability distributions of pore orientation and ***,limited anisotropy is detected in pore direction and shape,indicating similar modes of evolution both bedding-parallel and *** propose a straightforward but robust model to describe evolution of pore system in low-maturity oil shales during heating.

关键词： Low-maturity oil shale Pore elongation Organic matter pyrolysis In-situthermal upgrading Scanning electron microscopy(SEM) Machine learning

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Body-Comfort Cellulose Acetate-Based textiles-Triboelectric Nanogenerators with Radiation Cooling and Moisture Permeability

SSRN

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SSRN 2024年

作者： Xu, Mei Chen, Zhicheng Hu, Ziyao Zhou, Cheng Fu, Xinming Song, Yiheng Wen, Xianjie Wang, Jinfeng Yin, Xianze College of Materials Science and Engineering National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan Textile University Wuhan430200 China Department of Anesthesiology The Second People’s Hospital of Foshan City Guangdong Province Foshan528000 China State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University 430200 China

Wearable textile-triboelectric nanogenerators (t-TENGs) faced impediments in terms of the inadequate heat dissipation and moisture permeability performance. Specifically, actively heat-dissipating TENG devices exhibited intricacies, while passively heat-dissipating t-TENGs were considered unsatisfactory in sustaining optimal body temperature ranges for comfort. Herein, solvent-free titanium dioxide nanofluids (TiO2 nfs) were prepared to in-situ enhance the radiation cooling performance of electrospun TiO2 nfs@cellulose acetate (TiO2 nfs@CA) t-TENGs by grafting flexible chains on the TiO2 surface. TiO2 in the core layer of TiO2 nfs enhanced the infrared emission, hydrophilicity, and dielectric properties of TiO2 nfs@CA t-TENGs. Moreover, TiO2 nfs demonstrated a phase transition by absorbing energy within the physiological temperature ranges of the human body. TiO2 nfs enhanced the infrared emission, hydrophilicity, and dielectric properties of TiO2 nfs@CA t-TENGs by grafting flexible long chains ion on the TiO2 surface. The large-scale fabricated TiO2 nfs@CA membranes showcased remarkable radiation cooling performance (dropped 4 °C ~ 8 °C under 45 °C environments) in authentic and humid environments (like indoors, house and car). And TiO2 nfs@CA endowed a substantial enthalpy change within body temperature ranges, manifesting an exceptionally comfortable skin temperature (34 °C ~ 38 °C) even under scorching sunlight. Besides, TiO2 nfs@CA t-TENGs accurately monitored and pridicted foot movements in humid and enclosed environments by support vector machine (SVM). This made it promising as self-powered wearable devices. TiO2 nfs@CA t-TENGs provided a novel strategy for large scale fabricating of t-TENGs with comfort. © 2024, The Authors. All rights reserved.

关键词： textiles

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