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Multi-level intelligence empowering lithium-ion batteries

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Journal of Energy Chemistry 2024年第10期97卷 535-552,I0011页

作者： Guangxu zhang Jiangong Zhu Haifeng Dai Xuezhe Wei School of Materials Science and engineering Tongji UniversityShanghai 201804China School of Automotive Studies Tongji UniversityShanghai 201804China

With the significant and widespread application of lithium-ion batteries,there is a growing demand for improved performances of lithium-ion *** intricate degradation throughout the whole lifecycle profoundly impacts the safety,durability,and reliability of lithium-ion *** ensure the long-term,safe,and efficient operation of lithium-ion batteries in various fields,there is a pressing need for enhanced battery intelligence that can withstand extreme *** work reviews the current status of intelligent battery technology from three perspectives:intelligent response,intelligent sensing,and intelligent *** intelligent response of battery materials forms the foundation for battery stability,the intelligent sensing of multi-dimensional signals is essential for battery management,and the intelligent management ensures the long-term stable operation of lithium-ion *** critical challenges encountered in the development of intelligent battery technology from each perspective are thoroughly analyzed,and potential solutions are proposed,aiming to facilitate the rapid development of intelligent battery technologies.

关键词： Battery intelligence Intelligent response Intelligent sensing Intelligent management

Directly predicting N_(2) electroreduction reaction free energy using interpretable machine learning with non-DFT calculated features

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Journal of Energy Chemistry 2024年第10期97卷 139-148,I0004页

作者： Yaqin zhang Yuhang Wang Ninggui Ma Jun Fan Department of Materials Science and engineering City University of Hong KongHong Kong 999077China Center for Advanced Nuclear Safety and Sustainable Development City University of Hong KongHong Kong 9077China Department of Mechanical engineering City University of Hong KongHong Kong 999077China

Electrocatalytic nitrogen reduction to ammonia has garnered significant attention with the blooming of single-atom catalysts(SACs),showcasing their potential for sustainable and energy-efficient ammonia ***,cost-effectively designing and screening efficient electrocatalysts remains a *** this study,we have successfully established interpretable machine learning(ML)models to evaluate the catalytic activity of SACs by directly and accurately predicting reaction Gibbs free *** models were trained using non-density functional theory(DFT)calculated features from a dataset comprising 90 graphene-supported *** results underscore the superior prediction accuracy of the gradient boosting regression(GBR)model for bothΔg(N_(2)→NNH)andΔG(NH_(2)→NH_(3.),boasting coefficient of determination(R^(2))score of 0.972 and 0.984,along with root mean square error(RMSE)of 0.051.and 0.085 eV,***,feature importance analysis elucidates that the high accuracy of GBR model stems from its adept capture of characteristics pertinent to the active center and coordination environment,unveilling the significance of elementary descriptors,with the colvalent radius playing a dominant ***,Shapley additive explanations(SHAP)analysis provides global and local interpretation of the working mechanism of the GBR *** analysis identifies that a pyrrole-type coordination(flag=0),d-orbitals with a moderate occupation(N_(d)=5),and a moderate difference in covalent radius(r_(TM-ave)near 1.0 pm)are conducive to achieving high ***,we extend the prediction of activity to more catalysts without additional DFT calculations,validating the reliability of our feature {1.,model training,and design *** findings not only highlight new opportunity for accelerating catalyst design using non-DFT calculated features,but also shed light on the working mechanism of"black box"ML ***,the model provides valuable g

关键词： Nitrogen reduction Single-atom catalyst Interpretable machine learning Graphene Non-DFT features

Utilizing a metal-forging inspired chain combing strategy to enhance properties and expand applications of Nylon 66 plastic via heat inducing

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Nano Research 2024年第3期17卷 2164-2171页

作者： Junyu Yang Jiangwei zhang Nan Wang Guangyuan Zhou Division of Energy Materials Daglian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Innovation Center of Energy Material and Chemistry College of Chemistry and Chemical EngineeringInner Mongolia UniversityHohhot 010021China

The mechanical properties of engineering plastics can be enhanced through effective surface mechanical treatment(SMT),which can be applied to various types of engineering plastics,eliminating the limitations of conventional polymer processing and could potentially extend their applications and improve their performance and reliability as structural-functional *** by metal forging,this work proposes a simple and effective SMT strategy to enhance the mechanical properties of polyamide 66(PA66).Tensile tests have shown that SMTed PA66 samples exhibit significant improvements in both Young’s modulus and ultimate tensile strength(UTS),with a 2{3.4 MPa Young’s modulus,almost double that of the pristine samples,and a 3..56%increase in UTS,reaching {3.3.***,the modulus within the localized SMTed surface layer could reach up to {3. GPa,which is approximately {3. times higher than that of the pristine *** Vickers hardness within the localized SMTed surface layer can be doubled,reaching {3..72 Hv,and the crystallinity can increase by approximately 20%compared to the untreated ***,force field molecular dynamics(FFMD)simulations were conducted to investigate the ternary relationship between the SMT method,PA66’s molecular structure,and its *** combination of MD simulations and versatile structural characterizations provides evidence that the SMT method’s mechanism,under heat induction,results in a chain-combing procedure that changes the polymer’s molecular morphology microscopically and enhances its mechanical properties macroscopically.

关键词： Nylon 66 mechanical properties hardness crystallinity structural characterizations molecular dynamics simulation

NUMERICAL SIMULATION OF WAVE-INDUCED CURRENT WITH VERTICALLY VARIED RADIATION STRESS

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Journal of Hydrodynamics 2010年第2期22卷 254-259页

作者： zhang Jing LIANG Bing-chen LI Hua-jun College of engineering Ocean University of China Qingdao 266100 China

This article analyzes the vertical structure of the onshore current including the wave-induced current by an equation developed for the radiation stress against water depth.A coupled model COHERENS-SED is adopted to calculate the wave,tidal current,wave-induced current and sediment *** applying the new model to Yangpu Bay,its reliability is *** an ideal coastal domain is defined to simulate the nearshore current and wave setup with normal incident *** numerical and experimental results for the vertical structure show two undertows,also a visible setup in the surf *** demonstrates the importance of the radiation stress in wave-induced currents and mean water levels（set-up/down）.

关键词： COHERENS-SED radiation stress wave-induced current setup

Effect of Laser Processing Pattern on the Mechanical Properties of Aluminum Alloy Adhesive Joints

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Automotive Innovation 2023年第4期6卷 622-632页

作者： Yiben zhang Bo Liu {1. Liu Songgang Zheng Chao zhang College of Mechanical engineering University of Science and Technology Beijing30 Xueyuan RoadBeijing 100083China Beijing Key Laboratory of Lightweight Metal Forming 30 Xueyuan RoadBeijing 100083China Hozon New Energy Automobile Co. Ltd232 Tongsheng RoadJiaxing 314500China Master Tianjin Lightweight Technology Co. Ltd15 Jingli RoadTianjin 300000China Nanjing Lightweight Technology Research institute Co. Ltd296 Wenchang RoadNanjing 211200China

Adhesive bonding is a promising joining technology for joining lightweight aluminum structures,offering advantages such as the absence of additional heat input,connection damage,and environmental *** further enhance the strength of aluminum adhesive joints,this study investigates the influence of laser surface treatment on their mechanical ***,the effect of laser processing patterns and their geometric parameters on aluminum alloy adhesive joints is examined.A fiber laser is used to process crater array and multi-groove pattern on A6061.aluminum *** impact of crater overlap ratio and groove distance on various aspects,including aluminum surface morphology,roughness(Sa),adhesive joints shear,tensile strength,and failure modes is *** confocal microscope tests,water contact angle tests,lap shear tests,and cross tensile tests are employed to analyze these *** results indicate that as the crater overlap ratio increases,the S_(a) value of the aluminum surface ***,the shear strength of adhesive joints initially increases and then decreases,while the tensile strength consistently *** the other hand,an increase in groove distance leads to a decrease in S_(a),as well as a reduction in both shear and tensile strength of adhesive *** shear loading conditions,mechanical interlocking is identified as one of the bonding mechanisms in aluminum adhesive joints featuring crater array and multi-groove *** formation of interlocking structures is found to be influenced by the aluminum surface pattern and its associated parameters,as revealed through failure surface ***,adhesive and crater or groove interactions contribute to the formation of interlocking structures in specimens with a crater overlap ratio of -60% or groove distances of 1.0,1.0,3.0,and 400μ***,specimens with overlap ratios of 0%,40%,and 60% exhibit interlocking structures formed by the adhesive a

关键词： Laser processing Aluminum adhesive joint Strength Failure mode Bonding mechanism

Contact Stress reliability Analysis Model for Cylindrical Gear with Circular Arc Tooth Trace Based on an Improved Metamodel

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Computer Modeling in engineering & Sciences 2024年第7期140卷 593-619页

作者： Qi zhang Zhixin Chen Yang Wu Guoqi Xiang Guang Wen Xuegang zhang Yongchun Xie Guangchun Yang School of Intelligent Manufacturing&Automobile Chengdu Industrial Vocational Technical CollegeChengdu610218China School of Intelligent Manufacturing Panzhihua UniversityPanzhihua617000China School of Electrical engineering Chengdu Industry and Trade CollegeChengdu601165China School of Mechanical engineering Sichuan UniversityChengdu601165China Chengdu Technological university Chengdu611730China

Although there is currently no unified standard theoretical formula for calculating the contact stress of cylindrical gears with a circular arc tooth trace(referred to as CATT gear),a mathematical model for determining the contact stress of CATT gear is essential for studying how parameters affect its contact stress and building the contact stress limit state equation for contact stress reliability *** this study,a mathematical relationship between design parameters and contact stress is formulated using the *** enhance the model’s accuracy,we propose a new hybrid algorithm that merges the genetic algorithm with the Quantum Particle Swarm optimization algorithm,leveraging the strengths of ***,the“parental inheritance+self-learning”optimization model is used to fine-tune the KrigingMetamodel’s *** this,amathematicalmodel for calculating the contact stress of Variable Hyperbolic Circular-Arc-Tooth-Trace(VH-CATT)gears using the optimized Kriging model was *** then examined how different gear parameters affect the VH-CATT gears’contact *** simulation results show:(1.Improvements in R2,RMSE,and RMAE.R2 rose from0.9852 to 0.9974(a 1.22%increase),nearing 1.suggesting the optimized Kriging Metamodel’s global error is ***,RMSE dropped from3.921. to 1.6492,a decline of 57.94%.The global error of the GA-IQPSO-Kriging algorithm was also reduced,with RMAE decreasing by 58.69%from 0.1.23.to 0.0753.showing the algorithm’s enhanced *** a comparison of ten experimental groups selected randomly,the GA-IQPSO-Kriging and FEM-based contact analysis methods were used to measure contact *** revealed a maximum error of 1..1.667 MPA,which represents 2.85%of the real value.(2)Several factors,including the pressure angle,tooth width,modulus,and tooth line radius,are inversely related to contact *** descending order of their impact on the contact stress is:tooth line radius>modulus

关键词： CATT gear contact stress finite element method metamodel hybrid algorithm influencing factors

The suppression of seismic source’s multiples in the water seismic reflection

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The suppression of seismic source’s multiples in the water ...

Evaluating the performance of genomic selection on purebred population by incorporating crossbred data in pigs

The 2nd International Conference on Environmental and engineering Geophysics

作者： Xueqiang zhang Xiangpeng Zhu Zhe Yan Xueming Shi {1. of Geophysics and Geomatics china {3. of Geosciences wuhan 43.074 china

＜正＞More and more water exploration tasks are proposed. Seismic reflection method is mostly used for underwater stratigraphic division or investigating and verifying geological structure. The method of multichannel receiving is difficultly applied, because the shotpoint and the geophones are hardly in a straight line, the spread hardly coincides with the survey line too. So the method of single channel receiving is often used. In this method, a ship or a bar is used as the seismic source. The former seismic source can produce great energy, but it is very heavy and needs lifting equipment. The latter seismic source produces energy more weakly, but it is light and convenient and can meet certain depth exploration requirements. Therefore, in the actual work, the seismic bar source is often applied. But multiple reflection produced by beating the top of the bar seismic source significantly reduces the quality of the water seismic data. The reliability of geological interpretation is also affected. Previously, such data was processed generally by the method of low-pass filtering, but the resolution of seismic data was lowered. In this article, we suppress the multiple waves by the method of predictive deconvolution and certify the validity of the method by numerical analogue. And then we propose a improved algorithm. The multiples in the record of the model can be absolutely eliminated by the improved algorithm. After the real-world data in which there is much serious interference produced by multiples is processed by the improved algorithm, the resolution and signal-to-noise ratio of the data is improved and a perfect result is achieved.

关键词： seismic reflection seismic source’s multiples predictive deconvolution bar seismic source resolution

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Journal of Integrative Agriculture 2024年第2期23卷 639-648页

作者： Jun Zhou Qing Lin Xueyan Feng Duanyang Ren Jinyan Teng Xibo Wu Dan Wu Xiaoke zhang Xiaolong Yuan Zanmou Chen Jiaqi Li Zhe zhang Hao zhang College of Animal Science South China Agricultural University/State Key Laboratory of Swine and Poultry Breeding Industry/National Engineering Research Center for Breeding Swine IndustryGuangzhou 510642China Guangxi State Farms Yongxin Animal Husbandry Group Co. Ltd.Nanning 530022China

Genomic selection(GS)has been widely used in livestock,which greatly accelerated the genetic progress of complex *** population size was one of the significant factors affecting the prediction accuracy,while it was limited by the purebred *** to directly combining two uncorrelated purebred populations to extend the reference population size,it might be more meaningful to incorporate the correlated crossbreds into reference population for genomic *** this study,we simulated purebred offspring(PAS and PBS)and crossbred offspring(CAB)base on real genotype data of two base purebred populations(PA and PB),to evaluate the performance of genomic selection on purebred while incorporating crossbred *** results showed that selecting key crossbred individuals via maximizing the expected genetic relationship(REL)was better than the other methods(individuals closet or farthest to the purebred population,CP/FP)in term of the prediction ***,the prediction accuracy of reference populations combining PA and CAB was significantly better only based on PA,which was similar to combine PA and ***,the rank correlation between the multiple of the increased relationship(MIR)and reliability improvement was *** for individuals with low correlation(Cor(Pi,PA or B),the reliability improvement was significantly lower than other *** findings suggested that incorporating crossbred into purebred population could improve the performance of genetic prediction compared with using the purebred population *** genetic relationship between purebred and crossbred population is a key factor determining the increased reliability while incorporating crossbred population in the genomic prediction on pure bred individuals.

关键词： pigs crossbred population genomic selection reference population construction relationship

Effects of Crack Opening Angle and External Loads on reliability of Welded Pipe with Circumferential Crack

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Journal of Shanghai Jiaotong university(Science) 2011年第3期16卷 368-371页

作者：何柏林于影霞霍立兴张玉凤 School of Mechatronics & Electrical engineering East {1. Jiaotong University College of Material Science and engineering Tianjin {1.

The reliability of welded pressure pipe with circumferential surface crack was calculated by using 3. stochastic finite element *** method has overcome the shortcomings of conservative results in safety assessment with deterministic fracture mechanics *** calculation of reliability was based on 3. elasticplastic stochastic finite element program which was developed by *** effects of variables such as fracture toughness,bending moment and depth of the circumferential surface crack on the structure reliability were also *** calculation results indicate that the crack opening angle has certain effect on the reliability of the welded *** the mean value of bending moment is 1.kN·m,with the crack opening angle increasing from 3.°to 1.0°,the failure probability of the welded pipe changes from 3.83.9×1.-8to 3.6943.*** the mean value of bending moment is 1.kN·m,with the crack opening angle increasing from 3.°to 1.0°,the failure probability of the welded pipe changes from 3.986 5×1.-6to 1.93. 7×*** bending moment has great effect on the reliability of the welded *** the mean value of moment is changed from 1. to 1. kN·m,the failure probability of the welded pipe increases dramatically for the same circumferential crack opening *** of changing of moment,the pipe has higher reliability if the crack opening angle is less than 60°.The method has put forward a new way for safety assessment of welded pipe with circumferential surface crack.

关键词： welded pipe circumferential surface crack stochastic finite element method reliability safety assessment