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Journal of Energy Chemistry 2025年第1期100卷 59-65页

作者： Mengyu Xu Shaocong Yan Ting Liang Jia Jia Shengjie Yuan Dongxing kou Zhengji Zhou Wenhui Zhou Yafang Qi Yuena Meng Litao Han Sixin wu Key Laboratory for Special Functional Materials of MOE National & Local Joint Engineering Research Centre for High-efficiency Display and Lighting Technology School of Nanoscience and Materials Engineering Henan University

Solution-processed Cu（In,Ga）Se2（CIGS） solar cells suffer from serious carrier recombination and power conversion efficiency（PCE） loss because of the poor film properties and easy formation of ***, we propose Ag&Se co-selenization strategy to enhance the crystallization and passivate harmful defects of the CIGS films. The formation of Ag-Se phase during the selenization process enables the formation of large grains and suppresses the deep level defects. It is found that Ag doping can enlarge the depletion region width, lower the Urbach energy and prolong the carrier lifetime. As a result, a champion solution-processed CIGS solar cell presents a high efficiency of 16.48% with the highly improved opencircuit voltage（VOC） of 662 m V and fill factor（FF） of 75.8%. This work provides an efficient strategy to prepare high quality solution-processed CIGS films for high-performance CIGS solar cells.

关键词： CIGS solar cells Solution-processed method Ag doping Crystal growth Defects engineering

Theoretical coupling longitudinal-transverse model and experimental verification of transverse vibration of rope for multi-rope friction hoisting system

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International Journal of Coal Science & Technology 2016年第1期3卷 77-84页

作者： Juan wu Ziming kou Mechanical Engineering College Taiyuan University ofTechnology Taiyuan 030024 China Shanxi Provincial Engineering Laboratory for Mine FluidControl Taiyuan 030024 China

Using the mass of time-varying length balance rope focused on the hoisting conveyance, the coupling longi- tudinal-transverse model of mine friction hoist was established by using of the Hamilton＇s principle. The modified Galerkin＇s method was used to discretize partial differential Eqs. The mine hoisting system was used to the example to analysis the relation between the load, velocity and transverse vibration of rope. The in situ tests were illustrated to evaluate the proposed mathematical model. The results showed that the modeling method can well represent the transverse vibration of rope.

关键词： Hoisting system Vibration Rope Longitudinal-transverse Coupling

Stochastic optimization of cost-risk for integrated energy system considering wind and solar power correlated

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Journal of Modern Power Systems and Clean Energy 2019年第6期7卷 1472-1483页

作者： Jiehui ZHENG Yanni kou Mengshi LI Qinghua wu School of Electric Power Engineering South China University of TechnologyGuangzhou 510640China

Due to the growing penetration of renewable energies(REs)in integrated energy system(IES),it is imperative to assess and reduce the negative impacts caused by the uncertain *** this paper,an unscented transformation-based mean-standard(UT-MS)deviation model is proposed for the stochastic optimization of cost-risk for IES operation considering wind and solar power *** unscented transformation(UT)sampling method is adopted to characterize the uncertainties of wind and solar power considering the correlated relationship between *** on the UT,a mean-standard(MS)deviation model is formulated to depict the trade-off between the cost and risk of stochastic optimization for the IES optimal operation *** the UT-MS model is tackled by a multi-objective group search optimizer with adaptive covariance and Levy flights embedded with a multiple constraints handling technique(MGSO-ACL-CHT)to ensure the feasibility of Peratooptimal ***,a decision-making method,improved entropy weight(IEW),is developed to select a final operation point from the set of Perato-optimal *** order to verify the feasibility and efficiency of the proposed UT-MS model in dealing with the uncertainties of correlative wind and solar power,simulation studies are conducted on a test *** results show that the UT-MS model is capable of handling the uncertainties of correlative wind and solar power within much less samples and less computational ***,the MGSOACL-CHT and IEW are also demonstrated to be effective in solving the multi-objective UT-MS model of the IES optimal operation problem.

关键词： Integrated energy system Renewable energies Unscented transformation Mean-standard deviation Multi-objective optimization Decision making

Impact of the synergy between technology management and technological capability on new product development:a system dynamics approach

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Journal of Systems Engineering and Electronics 2022年第1期33卷 105-119页

作者： MA Qian wu Weiwei LIU Yexin LIANG Zhou kou Lingzhi School of Management Harbin Institute of TechnologyHarbin 150001China Beijing Institute of Aerospace Information Beijing 100854China School of Economics and Management Harbin Institute of Technology at WeihaiWeihai 264209China

This paper employs system dynamics to explore how the synergy between technology management and technological capability affects new product *** results show that the synergy between technology management and technological capability has positive impact on new product ***, the leading synergy processes between technology management and technological capability in different new product development stages are *** paper deepens the theoretical understanding of how to achieve new product development, and also provides useful guidance for firms to implement new product development.

关键词： technology management technological capability new product development system dynamics

Novel magnetic silicate composite for lightweight and efficient electromagnetic wave absorption

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Journal of Materials Science & Technology 2021年第33期92卷 51-59页

作者： Di Lan Zehao Zhao Zhenguo Gao Kaichang kou Hongjing wu MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Northwestern Polytechnical UniversityXi’an 710072China

A series of silicates with double shell hollow sphere morphology were prepared by hydrothermal method with ultra-high temperature calcined,and used in the field of electromagnetic(EM)wave *** characterizing the chemical composition,crystal structure,micro morphology and EM parameters of the several materials,the evaluation results of EM wave absorption capacity of the materials were *** the discussion section,we will discuss the reasons for the differences in EM wave absorption capabilities of the several silicates from multiple aspects such as EM wave absorption mechanism in *** for iron-based silicate(HGMs@Fe_(2)SiO_(4))materials,after reasonable composition and morphology design,the minimum reflection loss(RLmin)reached up to-41.14 d B with a matching thickness(d)of 3.4 mm,and the corresponding effective absorption bandwidth(f_(E),RL<-10 d B)was 6.80 *** of the wide EM wave absorption bandwidth,light weight and low water absorption,this kind of double shell silicate material has gained huge application potential in the EM wave absorption field.

关键词： Magnetic silicate composite Electromagnetic wave absorption Impendance matching

Quantum critical duality in two-dimensional Dirac semimetals

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Chinese Physics B 2019年第1期28卷 584-593页

作者： Jiang Zhou Ya-Jie wu Su-Peng kou Department of Physics Guizhou University School of Science Xi’an Technological University Department of Physics Beijing Normal University

Quantum criticality is closely related to the existence of two phases with unrelated symmetry breaking. In this paper,we study Néel and Kekulé valence bond state(VBS) quantum criticality in Dirac semimetals with four-fermion *** results show that all possible dynamical masses yield the same critical coupling, which exhibits the phenomenon that all possible phases meet at a multicritical point(e.g., a tricritical point for the Néel, Kekulé-VBS and semimetallic phases).In terms of the well-established Wess–Zumino–Witten field theory, we investigate the typical criticality for the transition between Néel and Kekulé-VBS phases, and the compatible Néel–Kekulé-VBS mass matrices imply the existence of a nonLandau transition between the Néel and Kekulé-VBS phases. We show the existence of mutual duality in the defect-driven Néel–Kekulé-VBS transition near the non-Landau critical point and find that this mutual duality results from the presence of a mutual Chern–Simons term. We also study the mutual duality based on dual topological excitations.

关键词： quantum criticality duality semimetal–insulator transition spin–charge separation

Study on evaluation standard of uncertainty of design wave height calculation model

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Journal of Oceanology and Limnology 2021年第4期39卷 1188-1197页

作者： Baiyu CHEN Yi kou Fang wu Liping WANG Guilin LIU College of Engineering University of California BerkeleyBerkeley 94720USA Dornsife College University of Southern CaliforniaLos Angeles 90007USA Statistics and Applied Probability University of California Santa BarbaraSanta Barbara 93106USA School of Mathematical Sciences Ocean University of ChinaQingdao 266071China College of Engineering Ocean University of ChinaQingdao 266071China

The accurate calculation of marine environmental design parameters depends on the probability distribution model,and the calculation results of different distribution models are often *** is very important to determine which distribution model is more stable and reasonable when extrapolating the recurrence level of the studied sea *** this paper,we constructed an evaluation method of the overall uncertainty of the calculation results and a measurement of the uncertainty of the design parameters derivation model,by incorporating the influence of sample information on the model information entropy,such as sample size,degree of dispersion,and sampling *** show that the sample data size and the degree of dispersion are directly proportional to the information *** the same group of data,the maximum entropy distribution model has the lowest overall uncertainty,while the Gumbel distribution model has the largest overall *** other words,the maximum entropy distribution model has good applicability in the accurate calculation of marine environmental design parameters.

关键词： uncertainty information entropy extreme value distribution model

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Laminar Composite Solid Electrolyte with Poly(Ethylene Oxide)-Threaded Metal-Organic Framework Nanosheets for High-Performance All-Solid-State Lithium Battery

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Energy & Environmental Materials 2023年第1期6卷 264-273页

作者： Na Peng Weijie kou Wenjia wu Shiyuan Guo Yan Wang Jingtao Wang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450003China

Developing laminar composite solid electrolyte with ultrathin thickness and continuous conduction channels in vertical direction holds great promise for all-solid-state lithium ***,a thin,laminar solid electrolyte is synthesized by filtrating–NH 2 functionalized metal-organic framework nanosheets and then being threaded with poly(ethylene oxide)chains induced by the hydrogen-bonding interaction from–NH_(2) *** is demonstrated that the threaded poly(ethylene oxide)chains lock the adjacent metal-organic framework nanosheets,giving highly enhanced structural stability(Young’s modulus,1.3 GPa)to 7.5-μm-thick laminar composite solid ***,these poly(ethylene oxide)chains with stretching structure serve as continuous conduction pathways along the chains in *** makes the non-conduction laminar metal-organic framework electrolyte highly conductive:3.97×10^(−5) S cm^(−1) at 25℃,which is even over 25 times higher than that of pure poly(ethylene oxide)*** assembled lithium cell,thus,acquires superior cycling stability,initial discharge capacity(148 mAh g^(−1) at 0.5 C and 60℃),and retention(94% after 150 cycles).Besides,the pore size of nanosheet is tailored(24.5–40.9˚A)to evaluate the mechanisms of chain conformation and ion transport in confined *** shows that the confined pore only with proper size could facilitate the stretching of poly(ethylene oxide)chains,and meanwhile inhibit their disorder ***,the pore size of 33.8˚A shows optimized confinement effect with trans-poly(ethylene oxide)and cis-poly(ethylene oxide)conformation,which offers great significance in ion *** design of poly(ethylene oxide)-threaded architecture provides a platform and paves a way to the rational design of next-generation high-performance porous electrolytes.

关键词： all-solid-state lithium battery ion conduction laminar composite solid electrolyte poly(ethylene oxide)-threaded metal-organic framework nanosheet structural stability

A group consensus model for evaluating real estate investment alternatives

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Financial Innovation 2016年第1期2卷 98-107页

作者： Wenshuai wu Gang kou School of Economics and Management East China Jiaotong UniversityNanchangJiangxi 330013China Business School Sichuan UniversityChengduSichuan 610065China School of Business Administration Southwestern University of Finance and EconomicsChengduSichuan 611130China Changbei Economic and Technological Development Zone No.808East Shuanggang StreetNanchangJiangxi 330013China

Background:Individual decision-making largely influences the effectiveness of decisions and benefits of ***:In this article,a consensus model for group decision-making(GDM),based on the analytic hierarchy process(AHP),is developed to gather group ideas and analyze the real estate investment environment under multi-criteria *** evaluation procedures of the developed model,which increase the convergence of the opinions of multiple experts,are ***:An empirical case about the real estate investment environment is applied to certify the feasibility of this developed ***:the evaluation procedures have been fully observed with several rounds of discussions,and have manifested the experiences of ***,the evaluation results are in accordance with real-world situations,which demonstrates that our developed model is a feasible analysis tool for real estate investors to obtain better profits and lower risk.

关键词： Group decision-making Analytic hierarchy process Real estate investment Decision analysis