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Engineering homotype heterojunctions in hard carbon to induce stable solid electrolyte interfaces for sodium-ion batteries

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Carbon Energy 2023年第1期5卷 181-193页

作者： Chengxin Yu Yu Li Haixia Ren Ji Qian Shuo Wang Xin Feng Mingquan Liu ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of TechnologyBeijingPeople's Republic of China Yangtze Delta Region Academy of Beijing Institute of Technology JiaxingPeople's Republic of China Department of Materials Science and Engineering Peking UniversityBeijingPeople's Republic of China

Developing effective strategies to improve the initial Coulombic efficiency(ICE)and cycling stability of hard carbon(HC)anodes for sodium-ion batteries is the key to promoting the commercial application of *** this paper,homotype heterojunctions are designed on HC to induce the generation of stable solid electrolyte interfaces,which can effectively increase the ICE of HC from 64.7%to 81.1%.The results show that using a simple surface engineering strategy to construct a homotypic amorphous Al_(2)O_(3) layer on the HC could shield the active sites,and further inhibit electrolyte decomposition and side effects ***,due to the suppression of continuous decomposition of NaPF 6 in ester-based electrolytes,the accumulation of NaF could be reduced,leading to the formation of thinner and denser solid electrolyte interface films and a decrease in the interface *** HC anode can not only improve the ICE but elevate its sodium storage performance based on this homotype heterojunction composed of HC and Al_(2)O_(3).The optimized HC anode exhibits an outstanding reversible capacity of 321.5mAhg^(−1) at 50mAg^(−1).The cycling stability is also improved effectively,and the capacity retention rate is 86.9%after 2000 cycles at 1Ag^(−1) while that of the untreated HC is only 52.6%.More importantly,the improved sodium storage behaviors are explained by electrochemical kinetic analysis.

关键词： hard carbon anodes homotype heterojunctions sodium-ion batteries solid electrolyte interface surface engineering

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Shale oil resource evaluation with an improved understanding of free hydrocarbons:Insights from three-step hydrocarbon thermal desorption

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Geoscience Frontiers 2023年第6期14卷 464-477页

作者： Gang Yan Yao-Hui Xu Wang-Lin Xu Bin bai ying bai Yun-Peng Fan Shan-Shan Li Ming Zhong Yan Liu Zhi-Yao Xu Cooperative Innovation Center of Unconventional Oil and Gas Yangtze University(Ministry of Education&Hubei Province)Wuhan 430100China Hubei Key Laboratory of Petroleum Geochemistry and Environment Yangtze UniversityWuhan 430100China Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China School of Energy and Resources China University of GeosciencesBeijing 100083China Suzhou Grand Energy Technology Co.Ltd Suzhou 215129China

The pyrolysis parameter S1,which indicates the amount of free hydrocarbons present in shale,is often underestimated due to hydrocarbon loss during sample handling and measurement *** remedy this issue,we strongly recommend an immediate three-step hydrocarbon thermal desorption(HTD)approach to be conducted on oil shale at the drilling *** approach measures S_(g),S_(O),and S_(1)^(*),which refer to gaseous,light,and free hydrocarbons,*** new shale oil content value,calculated from the total of these three parameters,is far more precise and reliable than traditional pyrolysis ***,we thoroughly investigated the components and microscopic occurrence features of hydrocarbons thermally desorbed at three temperature stages using gas chromatography(GC)and X-ray microcomputed tomography(CT).For example,we selected Chang 7_(3)mud *** experimental results irrefutably indicate that the ultimate shale oil content of poor resource rocks is significantly impacted by evaporative loss,with this effect being greater when the total organic carbon(TOC)is ***,C_(1-5)and C_(1-7)hydrocarbons constitute almost all of S_(g)and S_(O),respectively.S_(g)and S_(O)are predominantly composed of C_(1-3)gaseous hydrocarbons,with a maximum proportion of 42.93%.In contrast,S_(1)^(*)contains a substantial amount of C_(16-31)hydrocarbons.A three-dimensional reconstruction model of an X-ray micro-CT scan shows that while the amount of shale organic matter greatly decreases from the frozen state to 300℃,the pore volume significantly increases,particularly between 90 and 300℃.The increased pore volume is mainly due to macropores and *** is imperative to note that the shale oil triple-division boundaries must be adjusted based on more accurate oil content,although this would not affect the resource zones to which the samples already belong(ineffective,low-efficient,and enriched resources).In conclusion,we strongly advise conducting an immediat

关键词： Shale oil Hydrocarbon thermal desorption Resource evaluation Component Microscopic occurrence feature

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电火花加工金刚石-镍复合电极制备参数优化研究

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模具技术 2024年第3期 57-63页

作者：王文建常皓拜颖乾赵涛周栋陕西铁路工程职业技术学院陕西渭南714000 郑州职业技术学院河南南郑州450000

研究了化学复合镀镀液的制备参数对复合电极制备的影响,阐述了金刚石微粉预处理步骤。分析了金刚石微粉的等效粒径对复合电极镀层的影响,得出最佳镀层金刚石等效粒径为10μm。进行了镀液温度变化下的复合电极制备速度关系试验,得出最佳... 详细信息

研究了化学复合镀镀液的制备参数对复合电极制备的影响,阐述了金刚石微粉预处理步骤。分析了金刚石微粉的等效粒径对复合电极镀层的影响,得出最佳镀层金刚石等效粒径为10μm。进行了镀液温度变化下的复合电极制备速度关系试验,得出最佳制备温度为74~76℃。对制备的电极进行加工试验,结果表明:参数优化复合电极的电极角损耗比普通紫铜电极降低了74.74%;参数优化复合电极的电极角损耗比参数未优化复合电极降低了57.29%。

关键词：电火花加工(EDM) 复合电极制备参数优化

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Dynamic changes of genomic methylation profiles at different growth stages in Chinese Tan sheep

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Journal of Animal Science and Biotechnology 2022年第1期13卷 82-93页

作者： Yufang Liu Qiao Xu Xiaolong Kang Kejun Wang Jve Wang Dengzhen Feng ying bai Meiying Fang Department of Animal Genetics and Breeding National Engineering Laboratory for Animal BreedingMOA Laboratory of Animal Genetics and BreedingCollege of Animal Science and TechnologyChina Agricultural UniversityNo.2 Yuanmingyuan West RdBeijing 100193People’s Republic of China College of Life Sciences and Food Engineering Hebei University of EngineeringHandan 056021People’s Republic of China Biotechnology Institute Nanchang Normal UniversityNanchang 330029People’s Republic of China College of Agriculture Ningxia UniversityYinchuan 750021People’s Republic of China College of Animal Science and Veterinary Medicine Henan Agricultural UniversityZhengzhou 450002People’s Republic of China Beijing Key Laboratory for Animal Genetic Improvement Beijing 100193People’s Republic of China

Background:Tan sheep,an important local sheep breed in China,is famous for their fur ***-month-old Tan sheep have white,curly hair with beautiful flower spikes,commonly known as“nine bends”,which has high economic ***,the“nine bends”characteristic gradually disappears with age;consequently,the economic value of the Tan sheep ***-related changes in DNA methylation have been reported and may be responsible for age-induced changes in gene *** now,no genome-wide surveys have been conducted to identify potential DNA methylation sites involved in different sheep growth *** this study we investigated the dynamic changes of genome-wide DNA methylation profiles in Tan sheep using DNA from skin and deep whole-genome bisulfite sequencing,and compared the DNA methylation levels at three different growth stages:1,24,and 48 months old(mon1,mon24,and mon48,respectively).Results:In this study,11 skin samples from three growth stages(four for mon1,four for mon24,and three for mon48)were used for DNA methylation analysis and gene expression *** were 52,288 and 236 differentially methylated genes(DMGs)identified between mon1 and mon24,mon1 and mon48,and mon24 and mon48,*** the differentially methylated regions,1.11%,7.61%,and 7.65% were in the promoter in mon1 ***24,mon24 ***48,and mon1 ***48,*** were enriched in the MAPK and WNT signaling pathways,which are related to age growth and hair follicle morphogenesis *** were 51 DMGs associated with age growth and curly fleece *** DMGs between mon1 and mon48(KRT71,CD44,ROR2 and ZDHHC13)were further validated by bisulfite ***:This study revealed dynamic changes in the genomic methylation profiles of mon1,mon24,and mon48 sheep,and the percentages of methylated cytosines were 3.38%,2.85% and 4.17%,*** the DMGs,KRT71 and CD44 were highly methylated in mon1,and ROR2 and ZDHHC13 were highly methylated

关键词： Chinese tan sheep Different growth stages DNA methylation Whole genome bisulfite sequencing

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3D Urban Visualization with LOD Techniques

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Journal of China University of Mining and Technology 2006年第1期16卷 64-67页

作者： Wang Yin-xing Li bai-ying Liu Wen-bao Shi Xing-xi College ofGeosciences Shandong University of Science and Technology Taian Shandong 271019 China Nanjing University of Science and Technology Nanjing Jiangsu 210000 China

In 3D urban visualization, large data volumes related to buildings are a major factor that limits the delivery and browsing speed in a web-based computer system. This paper proposes a new approach based on the level of detail （LOD） technique advanced in 3D visualization in computer graphics. The key idea of LOD technique is to generalize details of object surfaces without losing details for delivery and displaying objects. This technique has been successfully used in visualizing one or a few multiple objects in films and other industries. However, applying the technique to 3D urban visualization requires an effective generalization method for urban buildings. Conventional two-dimensional （2D） generalization method at different scales provides a good generalization reference for 3D urban visualization, Yet, it is difficult to determine when and where to retrieve data for displaying buildings. To solve this problem, this paper defines an imaging scale point and image scale region for judging when and where to get the fight data for visualization. The results show that the average response time of view transformations is much decreased.

关键词： digital city level of detail (LOD) generalization visualization image scale point/region

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低合金高强钢拉伸断口分层的原因分析

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山东冶金 2024年第1期46卷 39-41页

作者：陈萌孙乾白莹刘亚儒徐延岭吴群南京钢铁股份有限公司江苏南京210035 山东钢铁股份有限公司莱芜分公司山东济南271104 山东金鼎集团有限公司山东济南271104

针对420 MPa级别低合金钢板室温横向拉伸断口出现分层现象,通过断口形貌、非金属夹杂物及金相组织观察以及扫描电镜、能谱检验等分析技术手段,对其宏观形貌、微观组织等综合分析,并对断口分层的原因及影响因素进行探讨。结果表明,试样... 详细信息

针对420 MPa级别低合金钢板室温横向拉伸断口出现分层现象,通过断口形貌、非金属夹杂物及金相组织观察以及扫描电镜、能谱检验等分析技术手段,对其宏观形貌、微观组织等综合分析,并对断口分层的原因及影响因素进行探讨。结果表明,试样存在心部偏析及MnS夹杂物,割裂基体,形成应力集中区域是该试样拉伸断口分层的主要原因。通过提高钢水的纯净度,严控钢液中的硫、磷等有害元素含量;配合连铸低过热度浇注工艺,合理控制拉坯速度,优化控轧控冷工艺,可有效减少该类缺陷发生概率。

关键词：低合金钢板拉伸断口分层偏析过热度

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Multispectral imaging in detecting early retinal pigment epithelial atrophy

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International Journal of Ophthalmology(English edition) 2018年第6期11卷 1071-1074页

作者： Jie Zhang ying-bai Chen Zi-Kui Yu Lin Liu Department of Ophthalmology Renji Hospital School of Medicine Shanghai Jiao Tong University

Dear Editor,Idiopathic choroidal neovascularization （CNV） is described as a rare but potentially blinding fundus disease wherein a choroidal neovascular membrane develops in the apparent absence of any coexistent oc... 详细信息

关键词： GROWTH-FACTOR THERAPY IDIOPATHIC CHOROIDAL NEOVASCULARIZATION MACULAR DEGENERATION PHOTODYNAMIC THERAPY GEOGRAPHIC ATROPHY PROGRESSION

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以矮小隐匿起病的周围神经病患儿4例

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中华儿科杂志 2024年第7期62卷 686-688页

作者：刘梦瑶谢文文白莹王筱崔营盼甘璐孔惠敏侯雅勤张好好吴静郑州大学第一附属医院小儿内科郑州450052 郑州大学第一附属医院妇产医学部遗传与产前诊断中心郑州450052 郑州大学第一附属医院内分泌科郑州450052

4例患儿以身材矮小就诊,其中男2例、女2例,就诊年龄分别为7岁、11岁6月龄、9岁11月龄和9岁3月龄。2例表现为短肢畸形,1例曾有数次因双下肢无力跌倒病史,1例出现双下肢感觉异常。查体发现3例双侧膝反射消失、1例减弱,行神经电生理检查均... 详细信息

4例患儿以身材矮小就诊,其中男2例、女2例,就诊年龄分别为7岁、11岁6月龄、9岁11月龄和9岁3月龄。2例表现为短肢畸形,1例曾有数次因双下肢无力跌倒病史,1例出现双下肢感觉异常。查体发现3例双侧膝反射消失、1例减弱,行神经电生理检查均提示周围神经病。4例患儿最终经遗传学分析均确诊遗传性周围神经病,3例为腓骨肌萎缩症1A型,1例为遗传性感觉和自主神经病1D型。

关键词：身材矮小神经电生理检查膝反射周围神经病短肢畸形遗传学分析自主神经病双下肢无力

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Construct NiSe/NiO Heterostructures on NiSe Anode to Induce Fast Kinetics for Sodium-Ion Batteries

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Energy Material Advances 2023年第1期4卷 393-401页

作者： Yu Li Ripeng Zhang Ji Qian Yuteng Gong Huanyu Li Chuan Wu ying bai Feng Wu School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081PR China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019PR China

It is of great significance to design and innovate electrode materials with unique structures to effectively optimize the electrochemical properties of the secondary ***,inspired by neuron networks,an ingenious synthesis is proposed to fabricate NiSe with multidimensional micro-nano structures,followed by in situ construction of NiSe/NiO heterostructures via a temporary *** major structure of bulk NiSe synthesized by the solvothermal method is 3-dimensional micron cluster spherical particles interwoven by uniform one-dimensional *** structures possess the synergistic advantages of nano and micro *** a temporary calcination in air,NiSe/NiO heterostructures should be formed in the bulk NiSe,which provides a built-in electric field to enhance diffusion kinetics of sodium *** special neural-like network and heterojunction structures ensure the excellent structural stability combined with rapid kinetics of the electrode,releasing 310.9 mAh g^(−1) reversible capacity after 2,000 cycles at 10 A g^(−1).Furthermore,the electrochemical storage and ion transport mechanisms are elaborated by electrochemical analysis and theoretical calculation in more detail.

关键词： materials. kinetics calcination

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Systematic measurement and spatiotemporal evolution of agricultural versatility in China

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Chinese Journal of Population,Resources and Environment 2022年第1期20卷 80-90页

作者： Yafei Wang Qijia Zhang Ming Xu ying bai Xiaohang Wu School of Economics and Management Chongqing Normal UniversityChongqing401331China

In this study,the entropy weight method was used to measure the agricultural versatility of 30 provinces in China(excluding Tibet,Hong Kong,Macao,and Taiwan)from 2008 to *** addition,the Theil index method and kernel density estimation were used to analyze the spatiotemporal characteristics of the agricultural versatility in each *** results show that the agricultural product supply and social security functions rapidly developed,but the economic development was *** 2008 to 2019,the total functional index of agriculture increased by 6.74%;the functional index of the agricultural product supply,social security,and ecological services increased by 12.72%,5.53%,and 2.05%,respectively;and the functional index of economic development decreased by 1.32%.The development of agricultural multifunctions in China is regionally *** on the Theil index method,the differences in the agricultural functions of the three regions are mainly due to intragroup *** contribution of intragroup differences of the eight economic regions is significantly lower than that of the three ***,intragroup differences dominate the agricultural product supply,economic development,and social security functions and intergroup differences control the ecological service *** kernel density estimation curve shows that the overall agricultural functional evaluation index increased,among which the agricultural product supply function increased the most.

关键词： Agricultural versatility Entropy weight method Theil index Kernel density estimation

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