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Recent progress in perovskite solar cells:from device to commercialization

Science China Chemistry 2022年第12期65卷 2369-2416页

作者： Xinhui Luo Xuesong Lin Feng Gao yang Zhao Xiaodong Li Liqing Zhan Zexiong Qiu Jin Wang Cong chen Lei Meng Xiaofeng Gao yu Zhang Zijian Huang Rundong Fan Huifen Liu yanrun chen Xiaoxue Ren Jiahong Tang Chun-Hao chen Dong yang yongguang Tu Xiao Liu Dongxue Liu Qing Zhao Jingbi you Junfeng Fang yongzhen Wu Hongwei Han Xiaodan Zhang Dewei Zhao Fuzhi Huang Huanping Zhou yongbo yuan Qi chen Zhaokui Wang Shengzhong(frank)Liu Rui Zhu Jotaro Nakazaki yongfang Li Liyuan Han State Key Laboratory of Metal Matrix Composites School of Material Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China School of Physics and Electronic Science Engineering Research Center of Nanophotonics&Advanced InstrumentMinistry of EducationEast China Normal UniversityShanghai 200241China Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage CenterSolar Energy Research CenterNankai UniversityTianjin 300350China College of Materials Science and Engineering&Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationSichuan UniversityChengdu 610065China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Beijing Key Laboratory for Theory and Technology of Advanced Battery Materials Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationSchool of Materials Science and EngineeringPeking UniversityBeijing 100871China School of Physics and Electronics Hunan Key Laboratory of Nanophotonics and DevicesCentral South UniversityChangsha 410083China Experimental Center for Advanced Materials School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Jia

Perovskite solar cells(PSCs) are undergoing rapid development and the power conversion efficiency reaches 25.7% which attracts increasing attention on their commercialization *** this review,we summarized the recent progress of PSCs based on device structures,perovskite-based tandem cells,large-area modules,stability,applications and ***,the challenges and perspectives are discussed,aiming at providing a thrust for the commercialization of PSCs in the near future.

关键词： perovskite solar cells device engineering stability application

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Effect of Powder Particle Size on the Fabrication of Ti-6Al-4V Using Direct Laser Metal Deposition from Elemental Powder Mixture

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Journal of Mechanics Engineering and Automation 2016年第7期6卷 348-355页

作者： Xueyang chen Lei yan Wei Li Zhiyuan Wang frank Liou Joe Newkirk The Department of Mechanical and Aerospace Engineering Missouri University of Science and Technology Rolla MO 65409USA The Department of Materials Science and Engineering Missouri University of Science and Technology Rolla MO 65409 USA

Direct LMD （laser metal deposition） was used to fabricate thin-wall Ti-6Al-4V using the powder mixture of Ti-6 wt.%Al-4 wt.%V. SEM （scanning electron microscopy）, OM （optical microscopy） and EDS （energy dispersive spectroscopy） were employed to examine the chemical composition and microstructure of the as-deposited sections. Vickers hardness tests were then applied to characterize the mechanical properties of the deposit samples which were fabricated using pre-mixed elemental powders. The EDS line scans indicated that the chemical composition of the samples was homogenous across the deposit. After significant analysis, some differences were observed among two sets of deposit samples which varied in the particle size of the mixing Ti-6wt.%Al-4wt.%V powder. It could be found that the set with similar particle number for Ti, Al and V powder made composition much more stable and could easily get industry qualified Ti-6Al-4V components.

关键词： Laser metal deposition Ti-6Al-4V elemental powder EDS composition distribution Vickers hardness.

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Gasoline Catalytic Emission Control Technologies to Meet China 6b RDE Requirements

Gasoline Catalytic Emission Control Technologies to Meet Chi...

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2019中国汽车工程学会年会

作者： SIANI ATTILIO Qi yunlei Jiang Juncong Tang Weiyong chen frank chen Bob BASF Catalysts(Shanghai) Co. Ltd.

Tighter emission regulations in Europe,USA and China are aiming to increase the fuel economy of passenger car fleet and to improve the overall air quality by reducing noxious emission pollutants such hydrocarbon(HC),c... 详细信息

关键词： TWC FWC filtration efficiency China-6b RDE

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Coal decarbonization:A state-of-the-art review of enhanced hydrogen production in underground coal gasification

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Energy Reviews 2022年第1期1卷 9-33页

作者： Liangliang Jiang Dan Xue Zixiang Wei Zhangxing chen Mammad Mirzayev yanpeng chen Shanshan chen Department of Chemical and Petroleum Engineering The University of CalgaryCalgaryAlbertaCanada PetroChina Research Institute of Petroleum Exploration&Development BeijingChina

The world is endowed with a tremendous amount of coal resources,which are unevenly distributed in a few *** sustainable energy resources are being developed and deployed,fossil fuels dominate the current world energy ***,low-carbon clean technologies,like underground coal gasification(UCG),ought to play a vital role in energy supply and ensuring energy security in the foreseeable *** paper provides a state-of-the-art review of the world's development of UCG for enhanced hydrogen *** is revealed that the world has an active interest in decarbonizing the coal industry for hydrogen-oriented research in the context of *** research is ongoing in multiple coal-rich nations,China dominates the world's efforts in both industrial-scale UCG pilots and laboratory experiments.A variety of coal ranks were tested in UCG for enhanced hydrogen output,and the possibilities of linking UCG with other prospective technologies had been proposed and critically ***,it is found that transborder collaborations are in dire need to propel a faster commercialization of UCG in an ever-more carbon-conscious ***,governmental and financial support is necessary to incentivize further UCG development for large-scale hydrogen production.

关键词： Hydrogen production Coal decarbonization Underground coal gasification Climate change Clean coal technology

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畜禽粪便固液分离技术特点及效率评估

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农业工程学报 2016年第S2期32卷 218-225页

作者：江滔温志国马旭光杨娟陈茂霞 frank Schuchardt 李国学乐山师范学院化学学院乐山614004 中国农业大学资源与环境学院北京100193 德国联邦农业科学院农业技术与生态系统工程研究所布伦瑞克38116

该文对常用畜禽粪便固液分离技术进行分析,评估出各分离技术的优缺点、适用对象、分离效果和性价比,为企业选择粪便固液分离设备提供参考。研究结果表明:重力分离技术成本最低,分离粒径小于1 mm的有机物效果最好,但分离后固相含水率过高... 详细信息

该文对常用畜禽粪便固液分离技术进行分析,评估出各分离技术的优缺点、适用对象、分离效果和性价比,为企业选择粪便固液分离设备提供参考。研究结果表明:重力分离技术成本最低,分离粒径小于1 mm的有机物效果最好,但分离后固相含水率过高(>90%),一般作为其他技术的预处理。筛分技术对于分离大粒径的有机颗粒物最有效,投资相对小,运行费用低;但对氮磷等营养元素分离效率较低,分离后的固相的含水率偏高,分离产物可用于固态发酵。压滤技术提高了磷元素的分离效率和固相含水率,但运营成本也增加,分离产物可用于有机肥生产。沉淀离心技术对去除细小颗粒最为有效,并能够去除氮磷元素,但运营成本太高,在中国推广难度大。絮凝剂能和大多数的分离技术结合使用从而提高分离效率。所有固液分离技术都不能分离畜禽粪便中的挥发性脂肪酸,因此也不能有效去除液相中的生化需氧量和臭味。多种分离技术的联合使用,在提高营养物质的分离效率的同时,降低固相的含水率将是未来技术发展的主要方向。

关键词：粪氮固液分离总固含物磷

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Learning the continuous-time optimal decision law from discrete-time rewards

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National Science Open 2024年第5期3卷 130-147页

作者： Ci chen Lihua Xie Kan Xie frank Leroy Lewis yilu Liu Shengli Xie School of Automation Guangdong University of TechnologyGuangdong Key Laboratory of IoT Information TechnologyGuangzhou 510006China Key Laboratory of Intelligent Information Processing and System Integration of IoT Ministry of EducationGuangzhou 510006China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore 111 Center for Intelligent Batch Manufacturing Based on IoT Technology Guangzhou 510006China UTA Research Institute the University of Texas at ArlingtonFort Worth 76118USA Department of Electrical Engineering and Computer Science University of TennesseeKnoxville 37996USA Oak Ridge National Laboratory Oak Ridge 37830USA Guangdong-HongKong-Macao Joint Laboratory for Smart Discrete Manufacturing Guangzhou 510006China

The concept of reward is fundamental in reinforcement learning with a wide range of applications in natural and social *** an interpretable reward for decision-making that largely shapes the system's behavior has always been a challenge in reinforcement *** this work,we explore a discrete-time reward for reinforcement learning in continuous time and action spaces that represent many phenomena captured by applying physical *** find that the discrete-time reward leads to the extraction of the unique continuous-time decision law and improved computational efficiency by dropping the integrator operator that appears in classical results with integral *** apply this finding to solve output-feedback design problems in power *** results reveal that our approach removes an intermediate stage of identifying dynamical *** work suggests that the discrete-time reward is efficient in search of the desired decision law,which provides a computational tool to understand and modify the behavior of large-scale engineering systems using the optimal learned decision.

关键词： continuous-time state and action decision law learning discrete-time reward dynamical systems reinforcement learning

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三维编织工艺及机械的研究现状与趋势

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玻璃钢／复合材料 2018年第5期 109-115页

作者：李政宁陈革 frank Ko 东华大学机械工程学院上海201620 纺织装备教育部工程研究中心上海201620 英属哥伦比亚大学材料工程系温哥华V6T1Z4

详细介绍了三维编织工艺和三维编织机械的发展历史与现状,分析对比了三维编织工艺流程及三维编织机的结构特点和适用性,总结了三维编织技术研究的热点和亟待解决的问题,为三维编织机的设计研究提供了一定参考。

关键词：三维编织工艺三维编织机械现状趋势

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A PI+R Control Scheme Based on Multi-Agent Systems for Economic Dispatch in Isolated BESSs

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IEEE/CAA Journal of Automatica Sinica 2024年第10期11卷 2154-2165页

作者： yalin Zhang Zhongxin Liu Zengqiang chen College of Artificial Intelligence Nankai UniversityTianjin 300350 Tianjin Key Laboratory of Interventional Brain-Computer Interface and Intelligent Rehabilitation Nankai UniversityTianjin 300350China IEEE

Battery energy storage systems(BESSs)are widely used in smart ***,power consumed by inner impedance and the capacity degradation of each battery unit become particularly severe,which has resulted in an increase in operating *** general economic dispatch(ED)algorithm based on marginal cost(MC)consensus is usually a proportional(P)controller,which encounters the defects of slow convergence speed and low control *** order to solve the distributed ED problem of the isolated BESS network with excellent dynamic and steady-state performance,we attempt to design a proportional integral(PI)controller with a reset mechanism(PI+R)to asymptotically promote MC consensus and total power mismatch towards 0 in this *** be frank,the integral term in the PI controller is reset to 0 at an appropriate time when the proportional term undergoes a zero crossing,which accelerates convergence,improves control accuracy,and avoids *** eigenvalues of the system under a PI+R controller is well analyzed,ensuring the regularity of the system and enabling the reset *** ensure supply and demand balance within the isolated BESSs,a centralized reset mechanism is introduced,so that the controller is distributed in a flow set and centralized in a jump *** cope with Zeno behavior and input delay,a dwell time that the system resides in a flow set is *** on this,the system with input delays can be reduced to a time-delay free *** the capacity limitation of the battery,a modified MC scheme with PI+R controller is *** correctness of the designed scheme is verified through relevant simulations.

关键词： Battery energy storage system(BESS) distributed control economic dispatch multi-agent system reset control

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基于三维打印的六角形编织物几何模型的构建

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上海纺织科技 2018年第4期46卷 57-61页

作者：李政宁陈革 frank Ko 东华大学机械工程学院上海201620 英属哥伦比亚大学材料工程系温哥华V6T IZ4

相对于传统的编织技术，六角形编织在织物形状的兼容性、纱线交织率和纱线容积率等方面具有独特的优势。为分析六角形编织物的几何结构，先按照六角形编织方法编织出圆形预制件，由六角形编织预制件编织过程中的纱线轨迹重复性和对称性... 详细信息

相对于传统的编织技术，六角形编织在织物形状的兼容性、纱线交织率和纱线容积率等方面具有独特的优势。为分析六角形编织物的几何结构，先按照六角形编织方法编织出圆形预制件，由六角形编织预制件编织过程中的纱线轨迹重复性和对称性特点，绘制出初始的CAD模型，再利用三维打印技术打印出对应的模型。由于三维打印实体模型具有直观性，可以较为方便地观察并分析其几何结构，利用坐标变换对初始CAD模型进行优化，得到较为接近六角形编织预制件的三维打印模型，并对六角形编织物的微观结构进行了初步分析。

关键词：六角形编织三维打印几何模型构建

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Adaptive Locally Weighted Projection Regression Method for Uncertainty Quantification

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Communications in Computational Physics 2013年第9期14卷 851-878页

作者： Peng chen Nicholas Zabaras Materials Process Design and Control Laboratory 101 Frank H.T.Rhodes HallSibley School of Mechanical and Aerospace EngineeringCornell UniversityIthacaNY 14853-3801USA

We develop an efficient,adaptive locally weighted projection regression(ALWPR)framework for uncertainty quantification(UQ)of systems governed by ordinary and partial differential *** algorithm adaptively selects the new input points with the largest predictive variance and decides when and where to add new *** effectively learns the local features and accurately quantifies the uncertainty in the prediction of the *** developed methodology provides predictions and confidence intervals at any query input and can dealwithmulti-output *** examples are presented to show the accuracy and efficiency of the ALWPR framework including problems with non-smooth local features such as discontinuities in the stochastic space.

关键词： Locally weighted projection regression multi-output adaptivity uncertainty quantification

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