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Core-shell mesoporous carbon hollow spheres as Se hosts for advanced Al-Se batteries

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 899-906页

作者： Haiping Lei Tianwei Wei Jiguo Tu shuqiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

Incorporating a selenium(Se)positive electrode into aluminum(Al)-ion batteries is an effective strategy for improving the overall battery ***,the cycling stability of Se positive electrodes has challenges due to the dissolution of intermediate reaction *** this work,we aim to harness the advantages of Se while reducing its limitations by preparing a core-shell mesoporous carbon hollow sphere with a titanium nitride(C@TiN)host to load 63.9wt%Se as the positive electrode material for Al-Se *** the physical and chemical confinement offered by the hollow mesoporous carbon and TiN,the obtained core-shell mesoporous carbon hollow spheres coated with Se(Se@C@TiN)display superior utilization of the active material and remarkable cycling *** a result,Al-Se batteries equipped with the as-prepared Se@C@TiN composite positive electrodes show an initial discharge specific capacity of 377 mAh·g^(-1)at a current density of 1000 mA·g^(-1)while maintaining a discharge specific capacity of 86.0 mAh·g^(-1)over 200 *** improved cycling performance is ascribed to the high electrical conductivity of the core-shell mesoporous carbon hollow spheres and the unique three-dimensional hierarchical architecture of Se@C@TiN.

关键词： aluminum-selenium batteries intermediate products core-shell mesoporous carbon hollow sphere cycling performance

Challenges confronting spider taxonomy in Asia

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Zoological Systematics 2024年第1期49卷 1-3页

作者： shuqiang Li Yejie Lin Institute of Zoology Chinese Academy of SciencesBeijing 100101China

As the largest continent in the world,bound by the Pacific,Indian,and Arctic Oceans and the Mediterranean Sea,Asia is well-endowed in its geological and biological *** surprisingly,spiders abound in the vast expanses of its tropic and temperate forests,lofty mountain ranges and plateaus,and flood plains of its many river ***,it is only over the past two decades that we have begun to make a concerted effort to undertake the study of spider taxonomy,and correspondingly,to discuss the issue of conservation of their habitats.

关键词： flood Arctic plateau

Thirty-eight spider species (Arachnida: Araneae) from China, Indonesia, Japan and Vietnam

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Zoological Systematics 2024年第1期49卷 4-98页

作者： Yejie Lin shuqiang Li Haolin Mo Xihao Wang Institute of Zoology Chinese Academy of SciencesBeijing 100101China Key Laboratory of Wildlife Evolution and Conservation in Mountain Ecosystem of Guangxi Nanning Normal UniversityNanning 530001China Jinan Licheng No.2 High School Jinan 250109China

Four new genera in three spider families are reported, namely Langlibaitiao Lin &Li, gen. nov., of Dictynidae O. Pickard-Cambridge, 1871, with Lathys inaffecta Li, 2017(♂♀,China: Guangxi) as the type species;Huoyanluo Lin & Li, gen. nov., of Macrobunidae Petrunkevitch, 1928, with Huoyanluo ruanxiaoqi Lin & Li, sp. nov.(♂, China: Yunnan) as the type species and Gushangzao Lin & Li, gen. nov. and Gyro Lin & Li, gen. nov., of Theridiidae Sundevall, 1833, with Gushangzao shiqian Lin & Li, sp. nov.(♂♀, China: Xizang) and Gyro zeppeli Lin & Li, sp. nov.(♀, China: Yunnan) as the type species, respectively. Further 31 new species in 19 spider families are reported, including Agelenidae C.L. Koch, 1837:Troglocoelotes doul Lin & Li, sp. nov.(♀, China: Guangxi) and T. ruanxiaowu Lin & Li, ***.(♀, China: Guangxi);Dictynidae: Langlibaitiao zhangshun Lin & Li, sp. nov.(♂, China:Hainan);Hahniidae Bertkau, 1878: Hahnia zhuyifani Lin & Li, sp. nov.(♀, China: Yunnan);Liocranidae Simon, 1897: Platnick xintongi Lin & Li, sp. nov.(♂♀, China: Xizang);Macrobunidae: Funny yanqing Lin & Li, sp. nov.(♂♀, China: Xizang) and Huoyanluo zhangzezhongi Lin & Li, sp. nov.(♂, China: Yunnan);Mysmenidae Petrunkevitch, 1928:Phricotelus yangxiong Lin & Li, sp. nov.(♂♀, China: Chongqing);Nemesiidae Simon, 1889:Raveniola shixiu Lin, Wang & Li, sp. nov.(♀, China: Guangxi) and R. xiezhen Lin, Wang & Li,sp. nov.(♂♀, China: Yunnan);Nesticidae Simon,1894: Speleoticus sicet Lin & Li, sp. nov.(♂♀,China: Sichuan);Ochyroceratidae Fage, 1912: Speocera yiduoi Lin & Li, sp. nov.(♂, China:Guangdong);Oecobiidae Blackwall, 1862: Uroctea chenyui Lin & Li, sp. nov.(♂♀, China:Guangxi);Oonopidae Simon, 1890: Orchestina xiebao Lin & Li, sp. nov.(♀, China:Chongqing);Philodromidae Thorell, 1869: Apollophanes lujiani Lin & Li, sp. nov.(♂♀, China:Guangxi) and Psellonus dawanqu Lin & Li, sp. nov.(♂♀, China: Guangdong);Salticidae Blackwall, 1841: Coccorchestes spark Lin & Li, sp. nov.(♂♀, Indonesia, West Papua),Onomastus zhuwu

关键词： Diagnosis new combination new genus new species Asia.

Shaking table test study on performance and functionality of a typical telecommunication room after earthquakes

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Earthquake Engineering and Engineering Vibration 2024年第2期23卷 455-474页

作者： Li Bo Guo Endong Sun Guoliang Ji shuqiang Mao Chenxi Wang Tao Han Di Li Xiaofei Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina Earthquake AdministrationHarbin 150080China Key Laboratory of Earthquake Disaster Mitigation Ministry of Emergency ManagementHarbin 150080China China Academy of Information and Communications Technology Beijing 100191China School of Architecture Engineering Binzhou UniversityBinzhou 256600China

Large numbers of basic transceiver stations,where the telecommunication room is one of the main components,comprise an important part of the telecommunication *** earthquakes,considerable economic loss from telecommunication systems is often associated with seismic damage and functional loss of the telecommunication ***,research related to this has been *** this study,shaking table tests were conducted for a full-scale typical telecommunication room,including a light-steel house and the necessary communication and power supply *** tests not only focused on the seismic damage to all the structures but also considered the functions of the communication and power supply of the *** interactions between these facilities and their effects on communication function were also *** with the damage to structures,the interruption of the power supply due to earthquakes is a weak ***,the damage indexes,together with their threshold values of different damage states for the communication and power supply equipment,were derived from the test *** results of this research can contribute to the literature gaps regarding seismic performance studies of telecommunication rooms,and can serve as a valuable reference for future research on its seismic fragility and economic losses evaluation.

关键词： telecommunication light-steel house communication equipment power supply equipment seismic performance functionality

An efficient molten-salt electro-deoxidation strategy enabling fast-kinetics and long-life aluminum-selenium batteries

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SusMat 2024年第1期4卷 126-139页

作者： Jiguo Tu Zheng Huang Cheng Chang Haiping Lei Shuai Wang shuqiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijingChina School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological UniversitySingaporeSingapore School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijingChina School of Electrical and Electronic Engineering Nanyang Technological UniversitySingaporeSingapore

Aluminum-selenium(Al-Se)batteries have been considered as one of the most promising energy storage systems owing to their high capacity,energy density,and cost effectiveness,but Se falls challenges in addressing the shuttle effect of soluble intermediate product and sluggish reaction kinetics in the solid-solid conversion process during ***,we propose an unprecedented design concept for fabricating uniform Se/C hollow microspheres with controllable morphologies through low-temperature electro-deoxidation in neutral NaCl-AlCl_(3) molten salt *** Se/C hollow microspheres are demonstrated to hold a favorable hollow structure for hosting Se,which can not only suppress the dissolution of soluble intermediate products into the electrolyte,thereby maintaining the structural integrity and maximizing Se utilization of the active material,but also promote the electrical/ionic conductivity,thus facilitating the rapid reaction kinetics during ***,the as-prepared Se/C hollow microspheres exhibit a high reversible capacity of 720.1 mAh g^(−1)at 500 mA g^(−1).Even at the high current density of 1000 mA g^(−1),Se/C delivers a high discharge capacity of 564.0 mAh g^(−1),long-term stability over 1100 cycles and high Coulombic efficiency of 98.6%.This present work provides valuable insights into short-process recovery of advanced Se-containingmaterials and value-added utilization for energy storage.

关键词： aluminum-ion batteries hollow Se/C microspheres long-term cycling stability lowtemperature electro-deoxidation NaCl-AlCl_(3)molten salt

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基于丰度反演及光谱变换的书画霉斑虚拟修复

文物保护与考古科学 2023年第2期35卷 8-18页

作者：侯妙乐王庆民谭丽武望婷吕书强北京建筑大学测绘与城市空间信息学院北京100044 建筑遗产精细重构与健康监测北京市重点实验室(北京建筑大学) 北京100044 青海省基础测绘院青海西宁810008 青海省地理空间信息技术与应用重点实验室(青海省地理信息和自然资源综合调查中心) 青海西宁810008 北京市规划和自然资源委员会西城分局北京100054 首都博物馆北京100045

古书画在保存过程中容易滋生霉斑病害,霉斑不仅影响书画的外观,还会对纸质文物造成不可逆转的永久性破坏。为了给霉斑清洗提供直观参考,提出基于丰度反演及光谱变换的书画霉斑提取与虚拟修复方法。选取与霉斑区域光谱曲线存在明显差异的... 详细信息

古书画在保存过程中容易滋生霉斑病害,霉斑不仅影响书画的外观,还会对纸质文物造成不可逆转的永久性破坏。为了给霉斑清洗提供直观参考,提出基于丰度反演及光谱变换的书画霉斑提取与虚拟修复方法。选取与霉斑区域光谱曲线存在明显差异的450~600 nm之间244个波段作为特征波段,通过连续最大角凸锥端元提取与灰度分割,提取霉斑区域。再对高光谱影像进行主成分变换,选取包含信息量最大的前三主成分合成影像,利用Criminisi算法对霉斑区域进行修复,再将修复后的影像进行主成分逆变换,完成高光谱影像的虚拟修复。以中国近现代画家倪田的《捕鱼图》为例进行了研究,发现修复后的霉斑区域与画体融入性较好,边界自然平滑,均方根误差值普遍变小。研究结果可为书画霉斑清洗提供直观的修复依据,具有较强的实用性。

关键词：虚拟修复高光谱成像连续最大角凸锥 Criminisi算法

基于流形学习与光谱解混的文物表面字迹增强——以云冈第38窟为例

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文物保护与考古科学 2023年第5期35卷 75-82页

作者：王诗涵吕书强李丽红侯妙乐宁波北京建筑大学测绘与城市空间信息学院北京100044 建筑遗产精细重构与健康监测北京市重点实验室(北京建筑大学) 北京100044 天津中科谱光信息技术有限公司天津300380 云冈石窟研究院山西大同037007

文物表面的文字是了解历史的关键信息,对文物表面文字信息的探索成为文物保护的重要环节。结合流形学习与光谱解混,提出一种新的文物表面字迹增强方法。首先,利用基于流形学习的等距映射方法对预处理后的高光谱图像进行非线性降维,得到... 详细信息

文物表面的文字是了解历史的关键信息,对文物表面文字信息的探索成为文物保护的重要环节。结合流形学习与光谱解混,提出一种新的文物表面字迹增强方法。首先,利用基于流形学习的等距映射方法对预处理后的高光谱图像进行非线性降维,得到信息量最大的灰度图像;其次,分析文字与背景的光谱特征,通过多层非负矩阵分解方法得到字迹丰度图;然后,将二者进行加权平均得到字迹增强图像,再与合成真彩色影像进行HSV融合,得到字迹融合影像;最后,为更好地辨认文字,在字迹增强图像上裁剪文字并做形态学变换,得到字迹提取图。以云冈石窟第38窟的一景褪色文字高光谱图像为例进行了验证,结果表明,该方法能够有效地增强出文物表面的褪色文字,且较其他增强方法效果更好。

关键词：高光谱图像字迹增强流形学习多层非负矩阵分解等距映射

基于光谱增强指数与LeNet-5的古书画褪色文字提取与识别

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文物保护与考古科学 2022年第5期34卷 72-80页

作者：侯妙乐孙鹏宇杨雪韵武望婷吕书强北京建筑大学测绘与城市空间信息学院北京100044 建筑遗产精细重构与健康监测北京市重点实验室(北京建筑大学) 北京100044 江苏星月测绘科技股份有限公司江苏盐城224600 首都博物馆北京100045

古书画中所记载的文字是了解历史的珍贵资料,对褪色文字进行提取和识别是挖掘和展示历史价值的基础。本工作首次提出基于光谱增强指数与LeNet-5相结合的古书画褪色文字提取与识别方法:利用高光谱成像无损检测、光谱范围广等优点,获取古... 详细信息

古书画中所记载的文字是了解历史的珍贵资料,对褪色文字进行提取和识别是挖掘和展示历史价值的基础。本工作首次提出基于光谱增强指数与LeNet-5相结合的古书画褪色文字提取与识别方法:利用高光谱成像无损检测、光谱范围广等优点,获取古书画的高光谱数据,分析文字与背景的光谱特征,构建字迹增强指数,实现古书画中褪色文字的增强;构建LeNet-5卷积神经网络,利用手写汉字集进行训练,对密度分割后的字迹图像进行自动识别。以清代画家张士保所作《论道图》中部分褪色文字为例进行了验证,文字识别的正确率为70.8%。结果表明,本工作所提出方法可有效提高古书画褪色文字提取与识别的智能化程度。

关键词：高光谱褪色文字字迹增强指数 LeNet-5 文字识别

A recyclable method for titanium extraction and oxygen evolution from Ti-bearing slags

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Fundamental Research 2024年第1期4卷 86-94页

作者： Zhenghao Pu Wei Wang Zhe Wang Mingyin Kou Yiwa Luo Jianbang Ge Xin Tao Mingyong Wang shuqiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China

Despite its existence for more than 80 years,the titanium industry is still challenged by massive carbon emissions,high production costs,and large resource *** than one hundred million tons of Ti-bearing blast furnace slag(TB-slag)has been discarded in China because of the difficulty of reutilization,which requires efficient titanium extraction and recovery *** paper describes a low-cost,carbon-emission-free method for Ti extraction and oxygen evolution via molten oxide electrolysis(MOE)vacuum *** a comprehensive analysis of the binding energies and activities of liquid metals,the highlights of our study are as follows.1)Sb has the best preferential deposition of Ti among a series of high-Ti-affinitive liquid metal cathodes(Cu,Ni,Pb,Sn,and Sb).2)The Ir anode was first used in TB-slag with IrO_(2) formed on its surface to protect it from further corrosion.3)An alloy containing Ti and Ca can be obtained by MOE,and Ti and Ca metals can be refined by further vacuum distillation.4)A closed loop is formed in the overall process owing to the recyclable Sb cathode and continuous feeding of TB-slag into the *** simple,low-cost,and environmentally friendly method can realize the efficient utilization of Ti resources and achieve carbon neutrality.

关键词： Titanium Molten oxide electrolysis Inert anodeLiquid cathode Depolarization