检索结果-南通市图书馆

Dielectric-ion-conductive ZnNb2O6 layer enabling rapid desolvation and diffusion for dendrite-free Zn metal batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 693-701页

作者： Haifeng Yang Jian Wang Panpan Zhang Xiaomin Cheng Qinghua Guan Jing Dong Bixian Chen Lujie Jia Jing Zhang Yongzheng Zhang Yunjian liu Hongzhen lin School of Materials Science and Engineering Jiangsu University i-Lab & CAS Key Laboratory of Nanophotonic Materials and Devices Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences Helmholtz Institute Ulm (HIU) Karlsruhe Institute of Technology (KIT) School of Materials Science and Engineering Xi'an University of Technology State Key Laboratory of Chemical Engineering East China University of Science and Technology

Rechargeable aqueous zinc-metal batteries （AZMBs） are promising candidates for large-scale energy storage systems due to their low cost and high ***,their performance and sustainability are significantly hindered by the sluggish desolvation kinetics at the electrode/electrolyte interface and the corresponding hydrogen evolution reaction where active water molecules tightly participate in the Zn（H2O）62+solvation ***,learnt from self-generated solid electrolyte interphase （SEI） in anodes,the dielectric but ion-conductive zinc niobate nanoparticles artificial layer is constructed on metallic Zn surface （ZNB@Zn）,acting as a rapid desolvation *** zincophilic and dielectric-conductive properties of ZNB layer accelerate interfacial desolvation/diffusion and suppress surface corrosion or dendrite formation,achieving uniform Zn plating/stripping behavior,as confirmed by electronic/optical microscopies and interface spectroscopical measurements together with theoretical ***,the as-prepared ZNB@Zn electrode exhibits excellent cycling stability of over 2000 h and robust reversibility （99.54%） even under high current density and depth of discharge ***,the assembled ZNB@Zn-based full cell displays high capacity-retention rate of 80.21%after 3000 cycles at 5 A g-1and outstanding rate performance up to 10 A *** large-areal pouch cell is stabilized for hundreds of cycles,highlighting the bright prospects of the dielectric but ion-conductive layer in further application of AZMBs.

关键词： Zn metal battery Dielectric artificial layer Rapid ion diffusion Zincophilic diffusion Active water inhibition

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

土卫七的运动理论

天文学报 1982年第2期 185-197页

作者：章圣泮刘林南京大学

本文用适当的方法解决了α≈α1和通约（n/n1≈3/4）的困难,给出了土卫七运动的一阶解。根据结果,可解释土卫七运动中的两个特殊现象:拱线后退以及土卫七和土卫六的合只能发生在远心点。

关键词：土卫七一阶根数通约土卫六短周期项运动理论海卫二平衡解摄动法振动分析方法长期项

Multi-dimensional Bi@C electrocatalyst for Cr3+/Cr2+ redox reaction boosting high-performance iron-chromium flow batteries

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Min Wu Mingjun Nan Shumin liu Caihe Zhong lin Qiao Huamin Zhang Xiangkun Ma Department of Materials Science and Engineering Dalian Maritime University Division of Energy Storage Dalian National Laboratory for Clean Energy Dalian Institute of Chemical Physics Chinese Academy of Sciences

With the increasing demand for energy storage technology, iron-chromium flow batteries（ICFBs） have been widely concerned because of their price advantage. However, the low electrochemical activity of Cr3+/Cr2+redox couples and the side hydrogen evolution reaction limit the industrial application of ICFBs. A multi-dimensional Bi/carbon composite electrocatalyst（Bi@C）for ICFB is designed and prepared to improve the electrochemical activity of Cr3+/Cr2+redox couples. Benefiting by using the Bimetal organic framework（Bi-MOF） with solid matrix as precursors, Bi nanospheres are highly dispersed on the Bi@C electrocatalyst that effectively enhances the electrochemical activity. The special morphology of Bi@C electrocatalyst helps the transfer of electrons and ions, significantly reducing the polarization of battery. Herein, the 3D porous carbon frames accelerate mass transfer, and the 2D carbon nanobelts and carbon layer coating on 0D Bi nanospheres improve the conductivity of Bi nanospheres. Therefore, the ICFB with multi-dimensional Bi@C electrocatalyst exhibits coulombic efficiency of 98.10% and energy efficiency of 79.14% at 140 mA cm-2, which is higher than ICFBs with commercial graphite carbon electrocatalyst and with heat treatment carbon felt. This work provides a simple and economical method to fabricate a high-performance multidimensional Bi@C electrocatalyst for Cr3+/Cr2+redox couples, boosting the development of ICFBs.

关键词：

Echo-dynamographic analysis of left ventricular filling flow by vector flow mapping:a new approach for evaluation of left ventricular diastolic function

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Echo-dynamographic analysis of left ventricular filling flow...

第二届长三角超声医学论坛暨2009年浙江省超声医学学术年会

作者： Department of Ultrasound and Function,East Hospital Affiliated to Tongji University Shanghai 200120,China Ai-yu MIAO Ming CHEN Yi liu Bo ZHANG Yu-hui ZHANG Jian-hua ZHENG Jin-kang HUANG sheng-lin liu Jing MA

Objective Inflow pattern of echo-dynamographic in left ventricle(LV) during left ventricular diastolic dysfunction was investigated by Vector Flow Mapping(VFM).Accuracy of LV inflow fluid-dynamic changes in assessment...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

从含锂废渣中回收制备碳酸锂的工艺研究

稀有金属与硬质合金 2017年第4期45卷 16-20,41页

作者：周有池王林生刘帆文小强江西理工大学冶金与化学工程学院江西赣州341000 江西江钨稀土科技开发有限公司江西赣州341000 赣州有色冶金研究所江西赣州341000

针对含Li废渣中Li资源得不到充分利用的问题,采用H_2SO_4浸出、NaOH除杂及EDTA深度除杂、Na_2CO_3沉锂工艺从含Li废渣中回收制备Li_2CO_3。实验结果表明,优化的工艺参数为:H_2SO_4酸浸过程,H_2SO_4浓度5%(体积分数)、浸出温度70℃、浸... 详细信息

针对含Li废渣中Li资源得不到充分利用的问题,采用H_2SO_4浸出、NaOH除杂及EDTA深度除杂、Na_2CO_3沉锂工艺从含Li废渣中回收制备Li_2CO_3。实验结果表明,优化的工艺参数为:H_2SO_4酸浸过程,H_2SO_4浓度5%(体积分数)、浸出温度70℃、浸出时间60min;NaOH除杂及EDTA深度除杂过程,加入NaOH至酸浸液pH值为12,之后加入2.0g/L的固体EDTA进行深度除杂;Na_2CO_3沉锂过程,溶液中Li+浓度23g/L,Na_2CO_3浓度为300g/L、用量为理论量的1.10倍,水浴温度95℃,反应时间40min。在优化工艺参数条件下,制备出的Li_2CO_3各项指标基本达到Li_2CO_3-0级要求,且Li综合回收率达到95%以上。

关键词：含Li废渣 Li2CO3 H2SO4浸出 NaOH除杂及EDTA深度除杂 Na2CO3沉锂回收工艺

维普期刊数据库

Exosomes originating from neural stem cells undergoing necroptosis participate in cellular communication by inducing TSC2 upregulation of recipient cells following spinal cord injury

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第11期20卷 3273-3286页

作者： Shiming Li Jianfeng Li Guoliang Chen Tao lin Penghui Zhang Kuileung Tong Ningning Chen Shaoyu liu Shenzhen Key Laboratory of Bone Tissue Repair and Translational Research Department of Orthopedic SurgeryThe Seventh Affiliated HospitalSun Yat-sen UniversityShenzhenGuangdong ProvinceChina Department of Orthopedic Surgery The First Affiliated Hospital of Jinan UniversityGuangzhouGuangdong ProvinceChina Department of Orthopedics and Traumatology Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina Department of Orthopedic Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina Department of Orthopedic Surgery The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdong ProvinceChina

We previously demonstrated that inhibiting neural stem cells necroptosis enhances functional recovery after spinal cord *** exosomes are recognized as playing a pivotal role in neural stem cells exocrine function,their precise function in spinal cord injury remains *** investigate the role of exosomes generated following neural stem cells necroptosis after spinal cord injury,we conducted singlecell RNA sequencing and validated that neural stem cells originate from ependymal cells and undergo necroptosis in response to spinal cord ***,we established an in vitro necroptosis model using neural stem cells isolated from embryonic mice aged 16-17 days and extracted *** results showed that necroptosis did not significantly impact the fundamental characteristics or number of *** sequencing of exosomes in necroptosis group identified 108 differentially expressed messenger RNAs,104 long non-coding RNAs,720 circular RNAs,and 14 microRNAs compared with the control *** of a competing endogenous RNA network identified the following hub genes:tuberous sclerosis 2(Tsc2),solute carrier family 16 member 3(Slc16a3),and forkhead box protein P1(Foxp1).Notably,a significant elevation in TSC2 expression was observed in spinal cord tissues following spinal cord ***2-positive cells were localized around SRY-box transcription factor 2-positive cells within the injury ***,in vitro analysis revealed increased TSC2 expression in exosomal receptor cells compared with other *** assessment of cellular communication following spinal cord injury showed that Tsc2 was involved in ependymal cellular communication at 1 and 3 days post-injury through the epidermal growth factor and midkine signaling *** addition,Slc16a3 participated in cellular communication in ependymal cells at 7 days post-injury via the vascular endothelial growth factor and macrophage migration inhibitory factor signaling

关键词： cellular communication competing endogenous RNA exosomes Foxp1 necroptosis neural stem cells Slc16a3 spinal cord injury transcriptome sequencing Tsc2

维普期刊数据库

The Study on Skiing Tourist Destination Integrated Marketing

在线全文

学校读者我要写书评

暂无评论

The Study on Skiing Tourist Destination Integrated Marketing

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

第五届全国青年体育科学学术会议、第二届中国体育博士高层论坛

作者： HE Yan~1 DONG Chuan-sheng~1 liu lin~2 (1.Research Center of Sport Social Sciences,Shenyang Sport University,Shenyang 110102 2.Department of Humanities,Shenyang Sport University,Shenyang 110102)

1. The Study Purpose Skiing tourist destination marketing can be treated as a kind of particular marketing of tourist destination. With the advent of tourism transformation from sightseeing tour to vacationing and leisure activities, skiing is becoming a popular kind of vacation. Skiing tourist destinations have also been constructed and developed. But skiing development in our country is still in its infancy. In many respects,

关键词： The Study on Skiing Tourist Destination Integrated Marketing

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan Wang Fan Zhang Xingyu Zhou Qian Wang Changyu liu Yangyang liu Hui Wang Xiaojie liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

钻孔测斜技术在某电站锚索施工中的应用实践

施工技术 2006年第S1期35卷 160-162页

作者：张德圣林舸刘士林龚发雄周叶中国科学院广州地球化学研究所广东广州510640

对CQ型磁球定向单点测斜仪和CQ型光电多点连续测斜仪2种仪器作简单介绍。根据某电站边坡锚索孔测斜施工情况,阐述锚索孔钻孔测斜技术,并对测斜结果进行分析和讨论。经现场测斜,以上测斜仪能基本满足施工要求,但也存在一些不足。

关键词：锚索孔钻孔测斜技术测斜仪

维普期刊数据库