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Journal of Energy Chemistry 2023年第6期81卷 432-442,I0010页

作者： Wenshuo Hou ruilong li Zhenhua Wang li Fang Zhe Bai Tan Wang Yu Bai Kening Sun Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

To obtain high-performance lithium-sulfur(li-S)batteries,it is necessary to rationally design electrocatalytic materials that can promote efficient sulfur electrochemical ***,the robust heterostructured material of nanoscale transition metal anchored on perovskite oxide was designed for efficient catalytic kinetics of the oxidation and reduction reactions of lithium polysulphide(li PSs),and verified by density functional theory(DFT)calculations and experimental *** to the strong interaction of nanoscale transition metals with li PSs through chemical coupling,heterostructured materials(STO@M)(M=Fe,Ni,Cu)exhibit excellent catalytic activity for redox reactions of li *** bifunctional heterostructure material STO@Fe exhibits good rate performance and cycling stability as the cathode host,realizing a high-performance li-S battery that can maintain stable cycling under rapid charge-discharge *** study presents a novel approach to designing electrocatalytic materials for redox reactions of li PSs,which promotes the development of fast charge-discharge li-S batteries.

关键词： Nanoscale transition metal lithium polysulfide Catalytic activity Redox reaction lithium-sulfur battery

Constructing high coordination number of Ir-O-Ru bonds in IrRuO_(x)nanomeshes for highly stable acidic oxygen evolution reaction

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Nano Research 2024年第6期17卷 5073-5079页

作者： Ge Yu ruilong li Yida Zhang Xingen lin Gongming Wang Xun Hong Center of Advanced Nanocatalysis(CAN) Department of Applied ChemistryUniversity of Science and Technology of ChinaHefei 230026China National Synchrotron Radiation Laboratory(NSRL) University of Science and Technology of ChinaHefei 230029China

IrRu bimetallic oxides are recognized as the promising acidic oxygen evolution reaction(OER)catalysts,but breaking the trade-off between their activity and stability is an unresolved ***,addressing the issues of mass transport obstruction of IrRu bimetallic oxides under high current remains a challenge for the development of proton exchange membrane water electrolysis(PEM-WE).Herein,we prepared an IrRuO_(x)nanomeshes(IrRuO_(x)NMs)with high coordination number(CN)of Ir-O-Ru bonds in a mixed molten salt with high solubility of the Ir/Ru precursor.X-ray absorption spectroscopy analysis revealed that the IrRuO_(x)NMs possess high coordination number of Ir-O-Ru bonds(CNIr-O-Ru=5.6)with a distance of 3.18Å.Moreover,the nanomesh structures of IrRuO_(x)NMs provided hierarchical channels to accelerate the transport of oxygen and water,thus further improving the electrochemical ***,the IrRuO_(x)NMs as OER catalysts can simultaneously achieve high activity and stability with low overpotential of 196 mV to reach 10 mA·cm^(−2)and slightly increase by 70 mV over 650 h *** electrochemical mass spectrometry tests suggest that the preferred OER mechanism for IrRuO_(x)NMs is the adsorbent evolution mechanism,which is beneficial for the robust structural stability.

关键词： oxygen evolution reaction IrRuO_(x) Ir-O-Ru bonds two-dimensional(2D)nanomesh proton exchange membrane device mass transport

Supporting IrO_(x) nanosheets on hollow TiO_(2) for highly efficient acidic water splitting

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Nano Research 2024年第8期17卷 6903-6909页

作者： Ge Yu ruilong li Yanmin Hu Xingen lin Ze lin Dongyang Wu Gongming Wang Xun Hong Center of Advanced Nanocatalysis(CAN) Department of Applied ChemistryUniversity of Science and Technology of ChinaHefei 230026China

The efficiency of proton exchange membrane water electrolysis(PEM-WE)for hydrogen production is heavily dependent on the noble metal iridium-based ***,the scarcity of iridium limits the large-scale application of *** address this issue,it is promising to select an appropriate support because it not only enhances the utilization efficiency of noble metals but also improves mass transport under high ***,we supported amorphous IrO_(x) nanosheets onto the hollow TiO_(2) sphere(denoted as IrO_(x)),which demonstrated excellent performance in acidic electrolytic water ***,the annealed IrO_(x)catalyst at 150℃in air exhibited a mass activity of 1347.5 A·gIr^(−1),which is much higher than that of commercial IrO_(2) of 12.33 A·gIr^(−1) at the overpotential of 300 mV for oxygen evolution reaction(OER).Meanwhile,the annealed IrO_(x) exhibited good stability for 600 h operating at 10 mA·cm^(−2).Moreover,when using IrO_(x) and annealed IrO_(x) catalysts for water splitting,a cell voltage as low as 1.485 V can be achieved at 10 mA·cm^(−2).The cell can continuously operate for 200 h with negligible degradation of performance.

关键词： oxygen evolution reaction hydrogen evolution reaction amorphous IrO_(x) hollow TiO_(2) proton exchange membrane water electrolysis

Enhancing electrochemical conversion of lithium polysulfide by 1T-rich MoSe_(2) nanosheets for high performance lithium-sulfur batteries

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Chinese Chemical Letters 2023年第11期34卷 360-366页

作者： ruilong li Zhe Bai Wensuo Hou Zeyu Wu Pingli Feng Yu Bai Kening Sun Zhenhua Wang Beijing Key Laboratory of Chemical Power Source and Green Catalysis School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081China

The sluggish conversion kinetics and shuttle effect of lithium polysulfides(liPSs)severely hamper the commercialization of lithium-sulfur *** electrocatalysts have been used to address these issues,amongst which,transition metal dichalcogenides have shown excellent catalytic performance in the study of lithium-sulfur *** that dichalcogenides in different phases have different catalytic properties,and such catalytic materials in different phases have a prominent impact on the performance of lithium-sulfur ***,1T-phase rich MoSe_(2)(T-MoSe_(2))nanosheets are synthesized and used to catalyze the conversion of *** with the 2H-phase rich MoSe_(2)(H-MoSe_(2))nanosheets,the T-MoSe_(2) nanosheets significantly accelerate the liquid phase transformation of liPSs and the nucleation process of ***-situ Raman and X-ray photoelectron spectroscopy(XPS)find that T-MoSe_(2) effectively captures liPSs through the formation of Mo-S and li-Se bonds,and simultaneously achieves fast catalytic conversion of *** lithium-sulfur batteries with T-MoSe_(2) functionalized separators display a fantastic rate performance of 770.1 mAh/g at 3 C and wonderful cycling stability,with a capacity decay rate as low as 0.065%during 400 cycles at 1 *** work offers a novel perspective for the rational design of selenide electrocatalysts in lithium-sulfur chemistry.

关键词： MoSe_(2) Functionalized separator lithium-sulfur battery Phase Catalytic conversion

Low-Velocity Impact Response of Stitched Multi-layer Foam Sandwich Composites

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Journal of Donghua University(English Edition) 2022年第6期39卷 573-580页

作者： ZHANG lipeng li ruilong WANG Xiaoxu HONG Jinfang Beijing Institute of Space Long March Vehicle Beijing 100076China School of Material Science and Engineering Tiangong UniversityTianjin 300387China

Low-velocity impact damage known as“imperceptible”damage usually destroys the structural integrity of the material and seriously affects the service life of the *** improve the low-velocity impact resistance of foam sandwich composites,an innovative concept of a stitched multi-layer sandwich structure by organically combining the discrete splitting of foam layer with full thickness stitching was proposed,and its low-velocity impact resistance obtained through drop-hammer impact tests was *** results showed that the multi-layer foam sandwich structure acted as a stress disperser and reduced the irreversible impact *** depth and area of low-velocity impact damage of multi-layer foam sandwich composites gradually decreased with increasing the number of the *** stitched structure would improve the integrity of the foam sandwich composites and inhibit the propagation of *** maximum impact load of the stitched foam sandwich composite increased by approximately 5% compared with that of the non-stitched *** addition,the low-velocity impact damage depth,damage area and absorbed energy of the stitched three-layer foam sandwich composite were reduced by 37.7%,34.6% and 20.7%,respectively,compared with those of the non-stitched single-layer sandwich material.

关键词： foam sandwich composite stitching multi-layer sandwich low-velocity impact

Fast portrait automatic segmentation with coarse-to-fine CNNs

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Computer Aided Drafting,Design and Manufacturing 2017年第2期27卷 39-49页

作者： Zhang Xijin li ruilong Zhang Songhai Department of Computer Science and Technology Tsinghua University

In this paper, we propose a coarse-to-fine convolutional network framework designed with problem specific knowledge for fast automatic portrait segmentation. We built up a dataset of 7 100 portrait images which are frames from personal live show videos. The proposed network includes a coarse network which can learn global information and a fine network which utilizes local information to refine the coarse output. Additionally, an auxiliary contour loss is introduced to help training the coarse network. The proposed framework shows higher accuracy than the widely-used fully convolutional network. With light-weight post-processing, the predicted foreground mask can be used in real-time portrait video editing tasks such as background replacement.

关键词： convolutional neural network image segmentation machine learning

一种适用于大幅值Quasi周期轨道的数值构造方法

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宇航学报 2023年第1期44卷 52-61页

作者：李瑞龙朱战霞西北工业大学航天学院西安710072

针对现有方法在构造大幅值quasi周期轨道时收敛性和通用性不足等问题,提出一种适用于大幅值quasi周期轨道的数值构造方法。首先针对2维不变环面的计算问题,设计了映射间隔约束的环面多步微分修正算法。在此基础上,采用自然参数延拓法和... 详细信息

针对现有方法在构造大幅值quasi周期轨道时收敛性和通用性不足等问题,提出一种适用于大幅值quasi周期轨道的数值构造方法。首先针对2维不变环面的计算问题,设计了映射间隔约束的环面多步微分修正算法。在此基础上,采用自然参数延拓法和伪弧长延拓法两种不同的思路构造等映射间隔的quasi周期轨道族。接着以quasi-Vertical为对象分析了两种思路各自的特点。最后以quasi-Axial,quasi-DRO等为对象验证了方法对三角平动点及多对复特征值情况的适用性。仿真结果表明,所提出的方法能够简单有效地解决多种类型幅值比超过1.2的大幅值quasi周期轨道的数值计算问题。

关键词： quasi周期轨道不变环面数值延拓轨道设计

物质形态与文本意义:麦肯锡文本社会学理论与方法述评

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中国图书馆学报 2020年第4期46卷 115-125页

作者：李明杰李瑞龙武汉大学信息管理学院

以齐马提出的文本"互文性"为基础,麦肯锡的文本社会学强调文本包括书籍以外的其他非书籍的物质形态,而这些物质形态保存了人类社会在印刷、阅读、收藏和校订等活动中留下的各种印记。对文本物质形态的制作及使用过程的历史考察,构成了... 详细信息

以齐马提出的文本"互文性"为基础,麦肯锡的文本社会学强调文本包括书籍以外的其他非书籍的物质形态,而这些物质形态保存了人类社会在印刷、阅读、收藏和校订等活动中留下的各种印记。对文本物质形态的制作及使用过程的历史考察,构成了实物目录学的重要内容。麦肯锡的文本社会学理论将文本的物质形态与文本意义紧密结合在一起,跨越了目录学和文学批评的界限。一方面超越了以格雷格为代表的只关注文本内容的"纯粹"的目录学理论;另一方面指出研究文本形式的表达功能对文学批评的价值。在研究方法上,麦肯锡针对目录学界长期习惯使用的归纳法在逻辑上的不足,提出以演绎法取而代之。麦肯锡文本社会学理论和方法对欧美书籍史和阅读史研究产生了深远的影响。参考文献23。

关键词：麦肯锡文本社会学实物目录学文学批评演绎法

对《申报》中图书馆报道的叙事研究(1925-1937)

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图书馆论坛 2022年第4期42卷 27-37页

作者：李明杰李瑞龙武汉大学信息管理学院

本文以1925-1937年《申报》刊载的有关图书馆的新闻报道为研究对象,对其每年报道的数量和主题进行统计分析,然后以《申报》总经理史量才为中心,分析《申报》的图书馆叙事动机。在此基础上,从主观叙事和客观叙事两个维度研究《申报》中... 详细信息

本文以1925-1937年《申报》刊载的有关图书馆的新闻报道为研究对象,对其每年报道的数量和主题进行统计分析,然后以《申报》总经理史量才为中心,分析《申报》的图书馆叙事动机。在此基础上,从主观叙事和客观叙事两个维度研究《申报》中关于图书馆的叙事内容,从不同于图书馆从业者的记者视角,考察这一时期上海图书馆界乃至全国图书馆事业的发展状况。

关键词：图书馆叙事叙事研究申报图书馆史史量才

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民国大藏书家徐行可的“朋友圈”

中国图书馆学报 2021年第5期47卷 116-131页

作者：李明杰李瑞龙郑翔武汉大学信息管理学院

徐行可以其藏书保存的完整性、版本价值的学术性、阅读利用的开放性,以及"书为士所用""书非赀财,自当化私为公""不为一家之蓄,俟诸三代之英"等藏书思想,成为民国时期湖北乃至全国藏书家的优秀代表。本文根据前代学者遗存的日记、信札、... 详细信息

徐行可以其藏书保存的完整性、版本价值的学术性、阅读利用的开放性,以及"书为士所用""书非赀财,自当化私为公""不为一家之蓄,俟诸三代之英"等藏书思想,成为民国时期湖北乃至全国藏书家的优秀代表。本文根据前代学者遗存的日记、信札、徐氏后人的回忆及访谈资料,按照藏书界、学术界、图书馆界三大职业圈子的划分,对徐行可的交游情况进行叙事性的历史考察,从徐氏与其友人之间的抄书、借书、鬻书、藏书、读书、校书、编书、刻书、论书等活动中,探寻徐行可藏书思想的形成轨迹,在一定程度上揭示了民国时期的学术生态。图1。参考文献44。

关键词：藏书史藏书家徐行可藏书思想民国时期