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A cellulose-based lithium-ion battery separator with regulated ionic transport and high thermal stability for extreme environments

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Nano Research 2025年第1期18卷 315-322页

作者： Kun-Peng Yang Song Xie Zi-Meng Han Hao-Cheng Liu Chong-Han Yin Wen-Bin sun Zhang-Chi Ling Huai-Bin Yang De-Han Li Qing-Fang Guan Shu-Hong Yu Department of Chemistry New Cornerstone Science LaboratoryInstitute of Biomimetic Materials&ChemistryAnhui Engineering Laboratory of Biomimetic MaterialsDivision of Nanomaterials&ChemistryHefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China Institute of Innovative Materials Department of Materials Science and EngineeringDepartment of ChemistrySouthern University of Science and TechnologyShenzhen 518055China

Separators play a critical role in lithium-ion ***,the restrictions of thermal stability and inferior electrical performance in commercial polyolefin separators significantly limit their applications under harsh ***,we report a cellulose-assisted self-assembly strategy to construct a cellulose-based separator massively and *** an ultrahigh ionic conductivity in electrolytes of 3.7 mS·cm^(-1) and the ability to regulate ion transport,the obtained separator is a promising alternative for high-performance lithium-ion *** addition,integrated with high thermal stability,the cellulose-based separator endows batteries with high safety at high temperatures,greatly expanding the application scenarios of energy storage devices in extreme environments.

关键词： lithium-ion batteries bio-inspired materials battery separators cellulose nanofiber ultrahigh ionic conductivity high safety

基于特征图谱的金银花与山银花(灰毡毛忍冬)质量表征比较研究

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环球中医药 2020年第4期13卷 600-610页

作者：黄玉娟舒一崧孔静李思潼范圆圆孙仁弟黄广伟高园园刘路路陈思玉李文静郭小趁姜艳艳石任兵北京中医药大学中药学院国家中医药管理局中药经典名方有效物质发现重点研究室 102488 上海绿谷生命园医药有限公司北京市教委中药质量控制技术工程中心

目的阐明金银花与山银花药学质量表征的共性与特性。方法采用HPLC-DAD法,Waters XBridge C18分析柱(250 mm×4.6 mm,5μm),以乙腈-0.4%磷酸水溶液为流动相梯度洗脱,流速1.0 mL/min,检测波长为211 nm,柱温30℃,建立金银花和山银花特征图... 详细信息

目的阐明金银花与山银花药学质量表征的共性与特性。方法采用HPLC-DAD法,Waters XBridge C18分析柱(250 mm×4.6 mm,5μm),以乙腈-0.4%磷酸水溶液为流动相梯度洗脱,流速1.0 mL/min,检测波长为211 nm,柱温30℃,建立金银花和山银花特征图谱质量表征方法;基于特征图谱中的特征峰的所属化学类型及代表性成分的峰面积和含量对15批金银花和10批山银花饮片进行药学质量表征,并对二者的药学质量特点进行比较分析。结果(1)建立的金银花和山银花的特征图谱及质量表征方法表征了二者质量表征特征值:特征峰、相对保留时间、相对峰面积、代表性成分含量及其相对含量。(2)金银花和山银花均具有特征峰30个,其药学架构涵盖4种化学类型,其中金银花/山银花各类型特征峰数目分别为:环烯醚萜类16/6,酚酸类8/11,黄酮类4/5,三萜皂苷类2/8个。(3)二者具有共有特征峰15个,其中环烯醚萜类6个、酚酸类6个、黄酮类2个、三萜皂苷类1个。(4)在金银花/山银花特征峰中指认了11个代表性成分:环烯醚萜类3/2、酚酸类6/6、黄酮类1/1、三萜皂苷类1/2;其代表性成分含量(mg/g)分别为:断氧化马钱子苷(21.756~29.826)/(6.936~14.643)、獐芽菜苦苷(12.204~30.139)/(26.109~31.608)、当药苷(13.806~23.27/(-),绿原酸(24.686~36.595)/(36.796~42.979)、异绿原酸A(14.010~20.452)/(50.544~58.013)、异绿原酸C(2.896~4.681)/(6.986~7.960)、异绿原酸B(0.935~1.260)/(1.389~1.738)、新绿原酸(0.888~1.560)/(2.025~2.635)、隐绿原酸(0.565~0.852)/(0.947~1.122),木犀草苷(0.579~0.690)/(0.527~0.642),灰毡毛忍冬皂苷乙(14.471~20.243)/(35.487~54.576)、川续断皂苷乙(-)/(31.191~35.731)。结论建立的特征图谱质量表征方法可准确地表征金银花与山银花的药学质量,二者质量表征共性为:具有相同的药学架构及部分共有特征成分;又具有明显的特性:金银花环烯醚萜类特征峰较多,当药苷为其特有环烯醚萜类成分,断氧化马钱子苷和木犀草苷的含量高于山银花;而山银花酚酸类和三萜皂苷类特征峰较多,川续断皂苷乙为其特有三萜皂苷类成分,异绿原酸A、灰毡毛忍冬皂苷乙、绿原酸、獐芽菜苦苷、异绿原酸C、新绿原酸、异绿原酸B和隐绿原酸的含量均高于金银花。研究结果可为金银花与山银花的质量控制及合理应用提供科学依据。

关键词：金银花山银花特征图谱质量表征关联分析含量测定

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刃宽对硬岩掘进影响的仿真及试验研究

工程科学学报 2025年第1期47卷 13-24页

作者：尚勇孙靖东姜海峰许顺海段红磊孙朝阳北京科技大学机械工程学院北京100083 中铁工程装备集团隧道设备制造有限公司河南453000

滚刀在硬岩掘进中极易发生崩刃、偏磨等异常失效,研究硬岩掘进条件下刃型参数对滚刀破岩载荷和破岩效率的影响十分重要.本文采用滚刀破岩试验和仿真分析相结合的方法,从载荷曲线、破岩体积、破岩比能等方面分析了刃宽对滚刀破岩的影响.... 详细信息

滚刀在硬岩掘进中极易发生崩刃、偏磨等异常失效,研究硬岩掘进条件下刃型参数对滚刀破岩载荷和破岩效率的影响十分重要.本文采用滚刀破岩试验和仿真分析相结合的方法,从载荷曲线、破岩体积、破岩比能等方面分析了刃宽对滚刀破岩的影响.基于双线性本构模型及Benzeggagh–Kenane损伤断裂准则建立了岩石材料的内聚力本构模型,通过单轴抗压试验及巴西劈裂试验对内聚力本构模型的微观参数进行了校准,并进一步建立了滚刀破岩的内聚力仿真模型.结果表明:内聚力本构模型可以准确的模拟破岩过程中岩石裂纹的萌生和扩展过程.依据裂纹的萌生和扩展情况,滚刀破岩过程主要分为三个阶段:弹性阶段、裂纹萌生–扩展阶段及岩石破坏卸载阶段.滚刀破岩载荷和破岩体积随着贯入度、刀间距和刃宽的增加而增加;破岩比能随刃宽的增加呈先减小后增大的趋势.对于所选取的硬岩,采用13 mm刃宽滚刀破岩时比能最小,破岩效率最高;7 mm刃宽滚刀破岩时无法形成贯通岩片,相邻滚刀之间仍存在岩脊,破岩效率较低.

关键词：滚刀刃宽 Cohesive模型线切割试验破岩载荷破岩效率

Single-Walled Carbon Nanotubes for Flexible Electronics and Sensors

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Journal of Materials Science & Technology 2008年第4期24卷 569-577页

作者： Xiuyun sun Yugang sun Department of Mechanical and Electronic Engineering Dezhou University Dezhou 253023 China Center for Nanoscale Materials Argonne National Laboratory 9700 South Cass Avenue Argonne Illinois 60439 USA

This article reviews the use of electronic quality single-walled carbon nanotubes grown via chemical vapor deposition （CVD） approaches at high temperatures as building blocks for fabricating flexible field-effect devices, such as thin-film transistors （TFTs） and chemical sensors. Dry transfer printing technique is developed for forming films of CVD nanotubes on low-temperature plastic substrates. Examples of TFTs with the use of nanotubes and thin dielectrics and hydrogen sensors with the use of nanotubes decorated with palladium nanoparticles are discussed in detail to demonstrate the promising potentiality of single-walled carbon nanotubes for building high performance flexible devices, which can find applications where traditional devices on rigid substrates are not suitable.

关键词： Single-walled carbon nanotubes Flexible Electronics Sensors

Novel approach to GPS/SINS integration for IMU alignment

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Journal of Systems Engineering and Electronics 2011年第3期22卷 513-518页

作者： Wei sun Feng sun School of Geomatics Liaoning Technical UniversityFuxin 123000P.R.China College of Automation Harbin Engineering UniversityHarbin 150001P.R.China

Strapdown inertial navigation system（SINS） requires an initialization process that establishes the relationship between the body frame and the local geographic *** process,called alignment,is generally used to estimate the initial attitude *** is possible because an accurate determination of the inertial measurement unit（IMU） motion is available based on the measurement obtained from global position system（GPS）.But the update frequency of GPS is much lower than *** to the non-synchronous data streams from GPS and SINS,the initial attitude angles may not be computed accurately *** addition,the estimated initial attitude angles may have relatively large uncertainties that can affect the accuracy of other navigation *** paper presents an effective approach of matching the velocities which are provided by GPS and *** this approach,a digital high-pass filter,which implements a pre-filtering scheme of the measured signal,is used to filter the Schuler cycle of discrete velocity difference between the SINS and *** results show that this approach improves the accuracy greatly and makes the convergence time satisfy the required accuracy.

关键词： strapdown inertial navigation system(SINS) global position system(GPS) integration alignment high-pass filter.

Light People: Professor Liangcai Cao

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Light(Science & Applications) 2023年第6期12卷 965-971页

作者： Tingting sun Light Publishing Group Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesNo.3888 Dong Nanhu RoadChangchun 130033China

Editorial Holography utilizes the principles of wave interference and diffraction to record and reconstruct images,which can highly restore the three-dimensional features of objects and provide an immersive visual *** Gabor proposed the concept of holography in 1947 and was awarded the Nobel Prize in Physics in *** has gradually developed into two major research directions:digital holography(DH)and computer-generated holography(CGH).

关键词： Holography utilize holography

Assessment of advanced RANS turbulence models for prediction of complex flows in compressors

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Chinese Journal of Aeronautics 2023年第9期36卷 162-177页

作者： Wei sun China Academy of Aerospace Science and Innovation Beijing 100176China

Reynolds-Averaged Navier-Stokes(RANS) Computational Fluid Dynamics(CFD) has been widely used in compressor design and analysis. However, reasonable prediction of compressor flow and its impact on compressor performance remains challenging. In this study, Menter’s Shear Stress Transport(SST) model and its variants, as well as the ω-based Reynolds stress model(Stress-BSL) are assessed. For a single rotor(Rotor 67), under the peak efficiency operating condition, all studied turbulence models predict its performance with reasonable accuracy;under the off-design conditions, SST with Helicity correction(SST-Helicity) shows superiority in predicting the effect of flow on the spanwise distribution of aerodynamic parameters. For Darmstadt’s 1.5-stage transonic axial compressor, SST-Helicity outperforms SST, SST with the Quadratic Constitutive Relation(SST-QCR) and Stress-BSL in predicting the performance as well as the spanwise distribution of aerodynamic parameters. At the design rotating speed, the stall margin given by SST-Helicity(20.90%) is the closest to the experimental measurement(24.81%), which is more than twice that by SST(8.71%) and 1.5 times that by SST-QCR(14.14%). This paper demonstrates that SSTHelicity model, together with a good quality and sufficiently refined grid, can capture the compressor flow features with reasonable accuracy, which results in a credible prediction of compressor performance and stage matching.

关键词： Compressor flow Computational Fluid Dynamics(CFD) Reynolds-Averaged Navier-Stokes(RANS) Reynolds stress model Stall margin Shear Stress Transport(SST)model Turbulence modelling

Light People:Profes Cheng-Wei

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Light(Science & Applications) 2023年第5期12卷 709-715页

作者： Tingting sun Light Publishing Group Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of Sciences3888 Dong Nan Hu RoadChangchun 130033China

“Mind-controlled information transmission”is one of human’s ultimate fantasies for the development of science and *** June 11,2022,eLight Journal simultaneously published two research papers on brainwave-based metasurfaces,and proposed a new concept of metasurface controlled by mind for the first time in the *** major scientific breakthrough rushed up to the hot search list of public *** was read more than ten million times,and the related video has been played 600,000 times,which aroused the audience’s strong interest and discussion,and really made a significant leap toward“mind control”.We are greatly honored to invite ***-Wei Qiu from National University of Singapore,the corresponding author of both above-mentioned articles and the co-Editor-in-Chief of eLight Journal,to have an exclusive ***-Wei Qiu showed us the profound interpretation of his research works and shared his unique insights on journal development and talent cultivation.

关键词： breakthrough interview journal

Light People:*** Hu,exploring the light

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Light(Science & Applications) 2024年第10期13卷 2002-2007页

作者： Tingting sun Light Publishing Group Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesNo.3888 Dong Nanhu RoadChangchun 130033China

Editorial Professor Juejun Hu was admitted by Tsinghua University as top scorer in the science college entrance examination of Fujian *** graduating,he went to MIT to pursue further studies,where he continued to excel and became a faculty *** step of his journey has been marked by extraordinary achievements,setting a standard that few can ***,*** is recognized as a leading expert in integrated photonics and optical *** pioneering research has not only advanced the frontiers of academia but also made significant impacts on industrial *** this interview,we invite you to delve into ***'s research world,exploring his unique insights into technological innovation and how he uses the power of science to shape the future.

关键词： admitted frontier interview