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Nanostructured AlFeO_(3) thin films as a novel photoanode for photoelectrochemical water splitting

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Nano Research 2024年第3期17卷 1075-1085页

作者： Xin Sun Min Wang Qi Geng Shuailin Chen xiaojun lv Xunlei Ding Meicheng Li State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of New EnergyNorth China Electric Power UniversityBeijing 102206China School of Mathematics and Physics North China Electric Power UniversityBeijing 102206China

The earth-abundant and robust aluminum ferrite,AlFeO_(3)(AFO),is mainly studied in the context of ***,we demonstrate that AFO can be used as a stable solar absorber in photoelectrochemical cells for solar water splitting,exhibiting attractive *** is the first report on the photoelectrochemical activity of *** thin-film photoelectrodes prepared by solution-processing methods are composed of vertically oriented thin nanosheets,featuring the rhombohedral symmetry(R3c)and n-type *** as-prepared AFO photoanodes generate a photocurrent density of+0.78 mA·cm^(-2) at 1.23 V *** hydrogen electrode(RHE)with the photocurrent _(onset) potential(U_(onset))close to the flat band potential of 0.5 V *** in the presence of hole ***,the U_(onset) of AFO for solar water splitting coincides with the flat band potential as well,which is rare in n-type inorganic *** also report other properties of AFO associated with photoelectrochemical *** films exhibit a band gap energy of 2.31 eV and positive band edges with low ***,the carrier lifetimes in AFO films are up to millisecond timescales under the mediation of defect *** on the photoelectrochemical behavior and optoelectronic properties,we believe that AFO has great potential for application in photoelectrochemical cells.

关键词： AlFeO_(3) photoanode nanosheets photoelectrochemistry onset potential

Evaluation and Analysis of Battery Technologies Applied to Grid-Level Energy Storage Systems Based on Rough Set Theory

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Transactions of Tianjin University 2020年第3期26卷 228-235页

作者： Zhiyuan Xie Liang Du xiaojun lv Qing Wang Jianglei Huang Tianyi Fu Shengyue Li State Grid Zhejiang Zhedian Tendering Consulting Co. Ltd.Hangzhou 310000ZhejiangChina State Grid Zhejiang Procurement Company Hangzhou 310000ZhejiangChina

Interest in the development of grid-level energy storage systems has increased over the *** one of the most popular energy storage technologies currently available,batteries offer a number of high-value opportunities due to their rapid responses,flexible installation,and excellent ***,because of the complexity,multifunctionality,and wide deployment of power grids,trade-offs in battery performance exist,especially when considering economics,environmental effects,and ***,establishing a comprehensive assessment of battery technologies is an urgent *** this work,we present an analysis of rough sets to evaluate the integration of battery systems(e.g.,lead-acid batteries,lithium-ion batteries,nickel/metal-hydrogen batteries,zinc-air batteries,and Na-S batteries)into a power ***,technological properties,economic significance,environmental effects,and safety of these battery systems are evaluated on the basis of rough set *** addition,some perspectives are provided to promote the development of battery technologies for grid-level energy storage.

关键词： Grid-level energy storage Battery Assessment Rough set theory

An End-To-End Hyperbolic Deep Graph Convolutional Neural Network Framework

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 537-563页

作者： Yuchen Zhou Hongtao Huo Zhiwen Hou Lingbin Bu Yifan Wang Jingyi Mao xiaojun lv Fanliang Bu School of Information Network Security People’s Public Security University of ChinaBeijing100038China Institute of Computing Technology China Academy of Railway Sciences Corporation LimitedBeijing100081China

Graph Convolutional Neural Networks(GCNs)have been widely used in various fields due to their powerful capabilities in processing graph-structured ***,GCNs encounter significant challenges when applied to scale-free graphs with power-law distributions,resulting in substantial ***,most of the existing GCN models are shallow structures,which restricts their ability to capture dependencies among distant nodes and more refined high-order node features in scale-free graphs with hierarchical *** more broadly and precisely apply GCNs to real-world graphs exhibiting scale-free or hierarchical structures and utilize multi-level aggregation of GCNs for capturing high-level information in local representations,we propose the Hyperbolic Deep Graph Convolutional Neural Network(HDGCNN),an end-to-end deep graph representation learning framework that can map scale-free graphs from Euclidean space to hyperbolic *** HDGCNN,we define the fundamental operations of deep graph convolutional neural networks in hyperbolic ***,we introduce a hyperbolic feature transformation method based on identity mapping and a dense connection scheme based on a novel non-local message passing *** addition,we present a neighborhood aggregation method that combines initial structural featureswith hyperbolic attention *** the above methods,HDGCNN effectively leverages both the structural features and node features of graph data,enabling enhanced exploration of non-local structural features and more refined node features in scale-free or hierarchical *** results demonstrate that HDGCNN achieves remarkable performance improvements over state-ofthe-art GCNs in node classification and link prediction tasks,even when utilizing low-dimensional embedding ***,when compared to shallow hyperbolic graph convolutional neural network models,HDGCNN exhibits notable advantages and performance enhanceme

关键词： Graph neural networks hyperbolic graph convolutional neural networks deep graph convolutional neural networks message passing framework

Recent advances in photocatalytic CO_(2) cycloaddition reaction

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Nano Research 2024年第11期17卷 9601-9619页

作者： Xing Chen Ye Liu Guoqiang Wang Yubo Kuang Xiaoqian Xiang Guangran Di Xiaojing Yin Lei Zhang Kaixin Wang Qianqian Cai xiaojun lv New Energy North China Electric Power University Beijing 102206 China

Carbon dioxide (CO_(2)) is a principal greenhouse gas with a substantial impact on global climate change. The photocatalytic reduction of CO_(2) represents an economically viable and environmentally benign approach. This technique involves the catalysis of the reaction between CO_(2) and epoxides under photocatalytic conditions to yield cyclic carbonates. Notably, this process has garnered significant attention due to its high atomic efficiency and alignment with green chemistry principles. Increasingly, photocatalysts are employed to facilitate the synthesis of cyclic carbonates, demonstrating outstanding performance even under natural light. This review evaluates the current state of research on the photocatalytic cycloaddition of CO_(2) with epoxides, analyzes the reaction mechanism and key influencing factors, and provides a comparative summary of the photocatalysts developed in this domain. Additionally, this paper underscores the significance of the reaction devices. The paper explores reaction devices with potential applications for photocatalytic CO_(2) and epoxides and envisions future integrations of CO_(2) photocatalytic cycloaddition reactions with advanced reaction devices for practical applications in this area.

关键词： CO_(2)cycloaddition reaction cycloaddition mechanism green chemistry photocatalytic device

TiO_(2)bunchy hierarchical structure with effective enhancement in sodium storage behaviors

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Carbon Energy 2022年第4期4卷 645-653页

作者： Shen Liu Kai Niu Shuailin Chen Xin Sun Lehao Liu Bing Jiang Lihua Chu xiaojun lv Meicheng Li State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China ElectricPower UniversityBeijingChina

Bronze phase TiO_(2)[TiO_(2)(B)]has great research potential for sodium storage since it has a higher theoretical capacity and ion mobility compared with other phases of TiO_(2).In this case,preparing porous TiO_(2)(B)nanosheets,which can provide abundant sodium insertion channels,is the most effective way to improve transport ***,we use the strong one-dimensional TiO_(2)nanowires as the matrix for stringing these nanosheets together through a simple solvothermal method to build a bunchy hierarchical structure[TiO_(2)(B)-BH],which has fast pseudocapacitance behavior,high structural stability,and effective ion/electron *** the superiorities of this structure design,TiO_(2)(B)-BH has a higher capacity(131 vs.70 mAh g^(−1)[TiO_(2)-NWs]at 0.5 C).And it is worth mentioning that the reversible capacity of up to 500 cycles can still be maintained at 85 mAh g^(−1)at a high rate of 10 ***,we also further analyzed the sodium storage mechanism through the ex-situ X-ray powder diffraction test,which proved the high structural stability of TiO_(2)(B)-BH in the process of sodiumization/*** strategy of uniformly integrating nanosheets into a matrix can also be extended to preparing electrode material structures of other energy devices.

关键词： hierarchical porous sodium-ion batteries TiO_(2) bronze phase nanosheets

Battery Technologies for Grid-Level Large-Scale Electrical Energy Storage

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Transactions of Tianjin University 2020年第2期26卷 92-103页

作者： Xiayue Fan Bin Liu Jie Liu Jia Ding Xiaopeng Han Yida Deng xiaojun lv Ying Xie Bing Chen Wenbin Hu Cheng Zhong Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education) School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Tianjin Key Laboratory of Composite and Functional Materials School of Materials Science and EngineeringTianjin UniversityTianjin 300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou 350207China State Grid Zhejiang Zhedian Tendering Consulting Co. Ltd.Hangzhou 310000China

Grid-level large-scale electrical energy storage(GLEES) is an essential approach for balancing the supply–demand of electricity generation, distribution, and usage. Compared with conventional energy storage methods, battery technologies are desirable energy storage devices for GLEES due to their easy modularization, rapid response, flexible installation, and short construction cycles. In general, battery energy storage technologies are expected to meet the requirements of GLEES such as peak shaving and load leveling, voltage and frequency regulation, and emergency response, which are highlighted in this perspective. Furthermore, several types of battery technologies, including lead–acid, nickel–cadmium, nickel–metal hydride, sodium–sulfur, lithium-ion, and flow batteries, are discussed in detail for the application of GLEES. Moreover, some possible developing directions to facilitate efforts in this area are presented to establish a perspective on battery technology, provide a road map for guiding future studies, and promote the commercial application of batteries for GLEES.

关键词： Battery technologies Grid-level large-scale electrical energy storage Peak shaving and load leveling Voltage and frequency regulation Emergency response

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组织公平感在绩效评估中的作用机制

科技管理研究 2005年第3期25卷 73-75,45页

作者：吕晓俊上海交通大学公共管理系上海200030

绩效评估是重要的人力资源管理手段,也是其他人力资源决策的信息来源。由于绩效评估的结果直接影响组织资源的分配,因此绩效评估的公平问题成为一个颇受关注的研究领域。组织公平感主要包括分配公平、程序公平和互动公平三个方面。本研... 详细信息

绩效评估是重要的人力资源管理手段,也是其他人力资源决策的信息来源。由于绩效评估的结果直接影响组织资源的分配,因此绩效评估的公平问题成为一个颇受关注的研究领域。组织公平感主要包括分配公平、程序公平和互动公平三个方面。本研究对三种公平感进行了理论回顾,并对它们各自与绩效评估满意感间的关系进行了阐述,分析了组织公平感与绩效改进动机、绩效行为以及组织公民行为之间的联系,并在此基础上提出了对绩效评估体系的若干建议。

关键词：组织公平感绩效评估人力资源

A New Path Planning Method for Flying Probe Test Arms

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A New Path Planning Method for Flying Probe Test Arms

第32届中国控制与决策会议

作者： Wentao Li Jingjie Yang xiaojun lv Jianrong Wang School of Mathematics Sciences Shanxi University China Academy of Railway Sciences

Whether the circuit components are soldered correctly is an important part to ensure that a printed circuit board(PCB) can be used *** the path of detecting each component successively can be regarded as a traveling salesman problem(TSP).This paper presents a novel path planning method for PCB testing by flying probe and introduces the flow and rules of our proposed *** a large number of experiments,we can demonstrate that the proposed algorithm reduces the path length and the time required to obtain the best solution effectively.

关键词： Path Planning TSP Insertion Method PCB Flying Probe Test

来源： cnki会议评论

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cnki会议

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程序公平对群体合作行为的影响研究

科技管理研究 2007年第4期27卷 160-161,167页

作者：吕晓俊上海交通大学国际与公共事务学院上海200030

选取280名大学生作为被试,以情境故事法呈现刺激,对程序公平和群体合作行为之间的关系进行探讨。结果表明:在工作过程中员工拥有更多的话语权,就更可能表现出合作行为。研究证实程序公平对合作行为的积极影响,并揭示自我-他人融合程度... 详细信息

选取280名大学生作为被试,以情境故事法呈现刺激,对程序公平和群体合作行为之间的关系进行探讨。结果表明:在工作过程中员工拥有更多的话语权,就更可能表现出合作行为。研究证实程序公平对合作行为的积极影响,并揭示自我-他人融合程度在其中的调节作用。

关键词：程序公平合作行为自我-他人融合