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Journal of Energy Chemistry 2024年第6期93卷 1-7,I0001页

作者： You Liu Lishuang Zheng Kuanxiang Zhang Kun Xu Weicheng Xie Jue Zhang Yulu Tian Tianyuan Liu Hanzhong Xu Ruoming ma Wei Huang Jiahui Chen jusheng Bao Chen Chen Yongsheng Zhou Xuchun Wang Junming Chen Jungan Wang College of Chemistry and materials Engineering Anhui Science and Technology UniversityBengbu 233000AnhuiChina Anhui Province Quartz Sand Purification and Photovoltaic Glass Engineering Research Center Chuzhou 233100AnhuiChina Triumph Photovoltaic materials Co.Ltd BengbuAnhuiChina National Laboratory of Solid State Microstructures School of PhysicsNanjing UniversityNanjing 210009JiangsuChina JinkoSolar Holding Co.Ltd HainingZhejiangChina

Perovskite solar cells(PSCs)have emerged as a promising photovoltaic technology because of their high light absorption coefficient,long carrier diffusion distance,and tunable ***,PSCs face challenges such as hysteresis effects and stability *** this study,we introduced a novel approach to improve film crystallization by leveraging 4-tert-butylpyridine(TBP)molecules,thereby enhancing the performance and stability of *** findings demonstrate the effective removal of PbI_(2)from the perovskite surface through strong coordination with TBP ***,by carefully adjusting the concentration of the TBP solution,we achieved enhanced film crystallinity without disrupting the perovskite *** TBP-treated perovskite films exhibit a low defect density,improved crystallinity,and improved carrier *** a result,the PSCs manufactured with TBP treatment achieve power conversion efficiency(PCE)exceeding 24%.Moreover,we obtained the PCE of 21.39%for the 12.25 cm^(2)module.

关键词： 4-tert-butylpyridine Film crystallization Perovskite solar cells Power conversion efficiency Stability improvement

PROCESS OF OXIDE FILM FORmaTION ON JOINT INTERFACE OF METAL AND GLASS

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Transactions of Nonferrous Metals Society of China 1991年第1期1卷 66-72页

作者： ma jusheng Kaoru KOJIma masayosi TAKADA Dong Zhili Tang Xiangyun Tsinghua University Bey ing 100084China Sumitomo Special matals Co.Osaka Japan

The *** oxide films on 476 alloy,with a small amount of additive elements such as Si etc.,oxidized in wet hydrogen atmosphere is some times accompanied by the formation of a great many *** form of whiskers grown on the oxide film is of flag pole type with a globe on its *** pole is a spinel single crysul oxide(Fe,Mn)Cr_(2)O_(4) and the globe is a metallic compound(Ni,Fe)_(x)Al_(y) covered with protective Al,Si oxide *** of the metallic globe named while particle is formed at the early stage of heating be tween 700℃ and 900℃.It seems to be extracted from the alloy matrix as a result of arummrum obrusion .Asial growth of pole begins at about 115℃.It is supposed that the whisker grows at the root of a white particle and the interaction effect between the stress of oxide around the particle and the climbing motion of dislocation beneath the *** the alloy surface is covered uniformly with Cr_(2)O_(3) as the ini tai oxide film,its final surface oxide film has no whiskers even after long time oxidation at higher temperature in hydrogen *** surface treatment of base alloy,such mechanical brushing,is very effective for the formation of Cr_(2)O_(3) at initial *** is supposed that the brushed surface may be activated to produce surface reactions by an enrichment of lattice defects.

关键词： sealing alloy oxide film oxide whisker

提高Al_2O_3陶瓷表面化学镀Cu层结合力的研究

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材料保护 1999年第7期32卷 8-10页

作者：李志勇穆道彬马莒生清华大学材料科学与工程系

化学镀Ｃｕ是Ａｌ２Ｏ３陶瓷基板表面金属化的一种颇具优势的方法，但镀层与基板之间的结合力较低影响其广泛应用。本文通过选取适当的腐蚀剂，改善了Ａｌ２Ｏ３陶瓷表面形貌，从而获得了２５ＭＰａ以上的镀层结合强度，可满足电子封装... 详细信息

化学镀Ｃｕ是Ａｌ２Ｏ３陶瓷基板表面金属化的一种颇具优势的方法，但镀层与基板之间的结合力较低影响其广泛应用。本文通过选取适当的腐蚀剂，改善了Ａｌ２Ｏ３陶瓷表面形貌，从而获得了２５ＭＰａ以上的镀层结合强度，可满足电子封装的要求。另外，本文通过ＳＥＭ及ＥＤＡＸ。

关键词：化学镀强度电镀三氧化二铝陶瓷镀铜

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Cu 在 FeCl_3 溶液中的蚀刻研究

清华大学学报（自然科学版） 1998年第3期38卷 82-85页

作者：蔡坚马莒生曹育文唐祥云清华大学材料科学与工程系

研究了ＦｅＣｌ３溶液浓度、温度及样品在溶液中的运动速度对Ｃｕ蚀刻速度的影响。在所研究的溶液浓度范围内，蚀刻过程为扩散控制为主的过程；在溶液相对密度为１．２６～１．３２时Ｃｕ的蚀刻速度具有极值。Ｃｕ在ＦｅＣｌ３溶液中蚀... 详细信息

研究了ＦｅＣｌ３溶液浓度、温度及样品在溶液中的运动速度对Ｃｕ蚀刻速度的影响。在所研究的溶液浓度范围内，蚀刻过程为扩散控制为主的过程；在溶液相对密度为１．２６～１．３２时Ｃｕ的蚀刻速度具有极值。Ｃｕ在ＦｅＣｌ３溶液中蚀刻其表面有ＣｕＣｌ膜的沉积，钝化膜对Ｃｕ的蚀刻有大的影响；蚀刻反应受Ｆｅ３＋通过钝化膜的扩散过程控制。试验拟定了初步的蚀刻工艺。

关键词：铜蚀刻钝化膜集成电路

引线框架用铜合金与Sn-Pb共晶焊料界面组织研究

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功能材料 2000年第5期31卷 494-495页

作者：王谦 Shi-Wei qicky Lee 曹育文唐祥云马莒生清华大学材料科学与工程系北京100084 Department of Mechanical Engineering Hong Kong University of Science&Technology

研究了四种国产引线框架用铜合金与Sn -Pb共晶焊料的界面结构及其在高温保温过程中的变化。发现了铜合金中的微量Zn元素会在铜合金与焊料的界面富集 ,这种富集可以阻碍原子在界面的扩散 ,延缓金属间化合物层的增厚 ,从而可以改善铜合金... 详细信息

研究了四种国产引线框架用铜合金与Sn -Pb共晶焊料的界面结构及其在高温保温过程中的变化。发现了铜合金中的微量Zn元素会在铜合金与焊料的界面富集 ,这种富集可以阻碍原子在界面的扩散 ,延缓金属间化合物层的增厚 ,从而可以改善铜合金与焊料的焊点的耐疲劳性能。

关键词：铜合金焊点金属问化合物层引线框架

Elasticity meets topology

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National Science Review 2024年第6期11卷 84-85页

作者： Guancong ma Department of Physics Hong Kong Baptist University

We are surrounded by environments and items that are made from solid materials in our daily life. Any physical contact with any items is a mechanical disturbance that produces mechanical *** underlines the crucial role that such vibrations play in our daily interactions,highlighting the need for a deeper understanding and improved manipulation of these fundamental phenomena.

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Uniform decomposition of velocity gradient tensor

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Journal of Hydrodynamics 2024年第1期36卷 24-34页

作者： Chenxi ma Chaoqun Liu Department of mathematics University of Texas at ArlingtonArlingtonTXUSA

In this paper,the principal decomposition of the velocity gradient tensor[∇v]is discussed in 3 cases based on the discriminant∆:∆0 with 3 distinct real eigen values,and∆=0 with 1 or 2 distinct real eigen *** velocity gradient tensor can also be classified as rotation point,which can be decomposed into three parts,i.e.,rotation[R],shear[S]and stretching/compression[SC],and non-rotation point,we defined a new resistance term[L],and the tensor can be decomposed into three parts,i.e.,resistance[L],shear[S]and stretching/compression[SC].Example matric are also displayed to demonstrate the new *** of principal decomposition between 3 different cases,and between Resistance and Liutex will also be discussed.

关键词： Velocity gradient Liutex resistance fluid kinematics

VOC emitted by biopharmaceutical industries:Source profiles,health risks,and secondary pollution

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Journal of Environmental Sciences 2024年第1期135卷 570-584页

作者： Jiawei ma Lin Li State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China National Engineering Laboratory for VOCs Pollution Control material&Technology University of Chinese Academy of SciencesBeijing 101408China

The biopharmaceutical industry contributes substantially to volatile organic compounds(VOCs)emissions,causing growing concerns and social developmental *** study conducted an on-site investigation of the process-based emission of VOCs from three biopharmaceutical *** the workshops of the three enterprises,26 VOCs were detected,which could be sorted into 4 classes:hydrocarbons,aromatic hydrocarbons,oxygen-containing compounds,and nitrogen-containing *** were the main components of waste gases,accounting for 44.13%-77.85%of the overall ***-based source profiles were compiled for each process unit,with the fermentation and extraction units of tiamulin fumarate being the main source of VOC *** heptanone,vinyl acetate,diethylamine,propylene glycol methyl ether(PGME),and benzene were screened as priority pollutants through a fuzzy comprehensive evaluation *** level concentration simulation results of the Gauss plume diffusion model demonstrated that the diffusivity of VOCs in the atmosphere was relatively high,indicating potential non-carcinogenic and carcinogenic risks 1.5-2 km ***,the process-based formation potentials of ozone and secondary organic aerosols(SOAs)were determined and indicated that N-methyl-2-pyrrolidone,dimethyl heptanone,and PGME should be preferentially controlled to reduce the ozone formation potential,whereas the control of benzene and chlorobenzene should be prioritized to reduce the generation of *** results provide a basis for understanding the characteristics of VOC emission by biopharmaceutical industries and their diffusion,potentially allowing the development of measures to reduce health risks and secondary pollution.

关键词： Biopharmaceutical Volatile organic compound Priority pollutant Exposure risk Secondary pollution

Deterministic and Robust Volt-var Control Methods of Power System Based on Convex Deep Learning

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Journal of Modern Power Systems and Clean Energy 2024年第3期12卷 719-729页

作者： Qing ma Changhong Deng the School of Electrical Engineering and Automation Wuhan UniversityWuhanChina

Volt-var control(VVC)is essentially a non-convex optimization problem due to the non-convexity of power flow(PF)constraints,resulting in the difficulty in obtaining the optimum without convexity *** existing second-order cone method for the convexity conversion often leads to a sharp increase in PF constraints and optimization variables,which in turn increases the optimization difficulty or even leads to optimization *** paper first proposes a deterministic VVC method based on convex deep learning power flow(DLPF).This method uses the input convex neural network(ICNN)to establish a single convex mapping between state parameters and node voltage to complete the convexity conversion while the optimization variables only correspond to reactive power equipment,which can ensure the global optimum with extremely fast computation *** cope with the impact brought by the uncertainty of distributed energy and omit the additional worst scenario search of traditional robust VVC,this paper proposes robust VVC method based on convex deep learning interval power flow(DLIPF),which continues to adopt ICNN to establish another convex mapping between state parameters and node voltage *** DLIPF with DLPF,this method decreases the modeling and optimization difficulty of robust VVC *** results on 30-bus,118-bus,and 200-bus systems prove the correctness and rapidity of the proposed methods.

关键词： Volt-var control convexity conversion convex deep learning power flow

Copper slag assisted coke reduction of phosphogypsum for sulphur dioxide preparation

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Chinese Journal of Chemical Engineering 2024年第1期65卷 43-53页

作者： Dong ma Qinhui Wang State Key Laboratory of Clean Energy Utilization Institute for Thermal Power EngineeringZhejiang UniversityHangzhou 310027China

The reduction of phosphogypsum(PG)to lime slag and SO_(2)using coke can effectively alleviate the environmental problems caused by ***,the PG decomposition temperature remains high and the product yield remains *** adding additives,the decomposition temperature can be further reduced and PG decomposition rate and product yield can be ***,the use of current additives such as Fe_(2)O_(3)and SiO_(2)brings the problem of increasing economic ***,it is proposed to use solid waste copper slag(CS)as a new additive to reduce PG to prepare SO2,which can reduce the cost and meet the environmental benefits at the same *** effects of proportion,temperature and thermostatic time on PG decomposition are investigated by experimental and kinetic analysis combined with FactSage thermodynamic calculations to optimize the roasting ***,the reaction mechanism is *** is found that adding CS to the coke and PG system can increase the rate of PG decomposition and SO_(2)yield while lowering the PG decomposition *** example,when the CS/PG mass ratio increases from 0 to 1,PG decomposition rate increases from 83.38%to 99.35%,SO_(2)yield increases from 78.62%to 96.81%,and PG decomposition temperature decreases from 992.4℃to 949.6℃.The optimal reaction parameters are CS/PG mass ratio of 1,Coke/PG mass ratio of 0.06 at 1100℃for 20 min with 99.35%PG decomposition rate and 96.81%SO_(2) *** process proceeds according to the following reactions:2CaSO_(4)+ 0.7C + 0.8Fe_(2)SiO_(4)→0.8Ca_(2)SiO_(4)+ 0.2Ca_(2)Fe_(2)O_(5)+ 0.4Fe_(3)O_(4)+2SO_(2)+ 0.7CO_(2)Finally,a process for decomposing PG with coke and CS is proposed.

关键词： Phosphogypsum Sulfur dioxide Copper slag Fluidized-bed Reduction Waste treatment