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Boosting reversible charging of li-ion batteries at low temperatures by a synergy of propylene carbonate-based electrolyte and defective graphite

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Nano Research 2024年第3期17卷 1491-1499页

作者： Yingqiang Wu Jiao Zhang Jinli liu li Sheng Bo Zhang limin Wang Siqi Shi li Wang Hong Xu Xiangming He Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of Sciences(CAS)Changchun 130022China China National Quality Supervision and Inspection Center for Industrial Explosive Materials Nanjing University of Science and TechnologyNanjing 210094China School of Materials Science and Engineering Materials Genome InstituteShanghai UniversityShanghai 200444China

Propylene carbonate(PC)-based electrolytes have exhibited significant advantages in boosting the low-temperature discharging of graphite-based li-ion ***,it is still unclear whether they can improve the charging property and suppress lithium *** this topic is challenging due to the problem of electrochemical *** overcome this issue,we introduced graphite with phase *** results show that the pouch-type full batteries using PC-based electrolyte exhibit steady performance over 500 cycles and can be reversibly charged over 30 times at-20℃ with an average Coulombic efficiency of 99.95%,while the corresponding value for the conventional ethylene carbonate(EC)-based electrolyte sample is only 31.20%.This indicates that the use of PC-based electrolyte significantly suppresses lithium plating during low-temperature *** further demonstrate that the improved performance is mainly attributed to the unique solvation structure,where PF-6more anions participate in solvation,leading to the formation of a stable F-rich solid state electrolyte interface on the graphite surface and a lower reduction tendency of li+*** work inspires new ideas for the design of PC-based electrolytes for low-temperature charging and fast-charging batteries.

关键词： lithium-ion batteries graphite propylene carbonate low-temperature charging

西秦岭北缘关子镇蛇绿岩的形成时代:来自辉长岩中LA-ICP-MS锆石U-Pb年龄的证据

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地质学报 2007年第11期81卷 1550-1561页

作者：裴先治丁仨平李佐臣刘战庆李高阳李瑞保王飞李夫杰西部地质资源与地质工程教育部重点实验室长安大学地球科学与资源学院西安710054

西秦岭北缘天水地区关子镇蛇绿岩由变质基性火山岩(斜长角闪片岩)和蛇纹岩、变辉石岩、变辉长岩等构造岩块组成。其中的变质基性火山岩具有N-MORB的地球化学特征,显示关子镇蛇绿岩是洋脊型蛇绿岩残片。对蛇绿岩中的辉长岩进行了LA-ICP-M... 详细信息

西秦岭北缘天水地区关子镇蛇绿岩由变质基性火山岩(斜长角闪片岩)和蛇纹岩、变辉石岩、变辉长岩等构造岩块组成。其中的变质基性火山岩具有N-MORB的地球化学特征,显示关子镇蛇绿岩是洋脊型蛇绿岩残片。对蛇绿岩中的辉长岩进行了LA-ICP-MS锆石U-Pb定年,得到206Pb/238U加权平均年龄为(499.7±1.8)Ma(MSWD=2.2),代表了辉长岩的结晶年龄,表明关子镇蛇绿岩是晚寒武世在西秦岭北缘李子园—关子镇—武山洋盆扩张过程中岩浆活动的产物,代表了东秦岭早古生代商丹古洋盆在西秦岭造山带北缘向西延伸的组成部分。

关键词：蛇绿岩辉长岩 LA-ICP-Ms 锆石U-Pb年龄晚寒武世天水地区西秦岭

li-current collector interface in lithium metal batteries

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Nano Research 2024年第10期17卷 8706-8728页

作者： Tian-Yu Wang Dingyi Zhao Keyue liang Yuzhang li Department of Chemical and Biomolecular Engineering University of CaliforniaLos AngelesLos AngelesCalifornia 90095USA

Interfaces within batteries,such as the widely studied solid electrolyte interface(SEI),profoundly influence battery *** these interfaces,the solid-solid interface between electrode materials and current collectors is crucial to battery performance but has received less discussion and *** review highlights the latest research advancements on the solid-solid interface between lithium metal(the next-generation anode)and current collectors(typically copper),focusing on factors affecting the li-current collector interface and improvement strategies from perspectives of current collector substrate(lithiophilicity,crystal facets,mechanical properties,and topological structure),electrolyte chemistry,current density,stacking pressure,SEI,electric field and temperature,and provides a future directions and opportunities on this topic.

关键词： lithium metal anode current collectors li-current collector interface solid-solid interface improvement strategies

东昆仑南缘布青山复合增生型构造混杂岩带组成特征及其形成演化过程

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地球科学 2018年第12期43卷 4498-4520页

作者：裴先治李瑞保李佐臣刘成军陈有炘裴磊刘战庆陈国超李小兵王盟长安大学地球科学与资源学院西部矿产资源与地质工程教育部重点实验室自然资源部岩浆作用成矿与找矿重点实验室陕西西安710054 桂林理工大学地球科学学院广西桂林541004 南阳理工学院土木工程学院河南南阳473000 山西师范大学地理科学学院山西临汾041000

为了研究东昆仑南缘布青山复合增生型构造混杂岩带的物质组成、构造属性及形成演化历史,在前人资料基础上从构造混杂岩带物质组成、形成时代、构造属性等方面对其进行综合研究.研究结果表明,布青山复合增生型构造混杂岩带是一条分隔东... 详细信息

为了研究东昆仑南缘布青山复合增生型构造混杂岩带的物质组成、构造属性及形成演化历史,在前人资料基础上从构造混杂岩带物质组成、形成时代、构造属性等方面对其进行综合研究.研究结果表明,布青山复合增生型构造混杂岩带是一条分隔东昆仑造山带与巴颜喀拉造山带的增生型构造边界,主要由元古代-古生代不同构造属性的大型构造混杂岩块与混杂基质组成.构造混杂岩块包括中元古代中深变质基底岩块(苦海岩群)、寒武纪蛇绿岩岩块、奥陶纪蛇绿岩岩块、石炭纪蛇绿岩岩块、石炭纪洋岛/海山玄武岩岩块、奥陶纪中酸性弧岩浆岩岩块、格曲组磨拉石沉积等.基质岩系主要为一套强烈构造变形的早中二叠世马尔争组浊积岩系.该混杂岩带记录了东昆仑南缘布青山地区东特提斯洋(布青山洋)自新元古代晚期开启以来,从晚寒武世-中三叠世长期持续向北的洋壳消减及俯冲增生过程,并于中三叠世晚期布青山洋消减完毕而使巴颜喀拉地块与东昆仑地块碰撞拼合.该次造山事件导致了不同类型、不同时代构造岩块与马尔争组浊积岩强烈混杂,最终形成了布青山复合增生型构造混杂岩的基本构造格架.

关键词：东昆仑蛇绿岩布青山构造混杂岩俯冲作用原特提斯洋构造地质学

东秦岭东段五垛山花岗岩基白草垛花岗伟晶岩微量元素富集型锆石特征及岩浆热液过程

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地质学报 2023年第3期97卷 688-704页

作者：陈国超张晓飞裴先治李瑞保李佐臣魏均启陈孝珍季宪军张勇南阳理工学院河南南阳473000 长安大学西部矿产资源与地质工程教育部重点实验室陕西西安710054 自然资源部成矿作用与资源评价重点实验室北京100037 资源与生态环境地质湖北省重点实验室湖北省地质局湖北武汉430034 中国地质调查局发展研究中心北京100037

锆石是岩石中常见的副矿物,锆石晶体结构和地球化学特征的变化可以记录热液蚀变过程。东秦岭东段白草垛花岗伟晶岩中识别出三种类型锆石。类型一锆石具有明显的振荡环带,部分锆石边部有少量裂隙,微量元素含量相对较低,重稀土元素(HREE)... 详细信息

锆石是岩石中常见的副矿物,锆石晶体结构和地球化学特征的变化可以记录热液蚀变过程。东秦岭东段白草垛花岗伟晶岩中识别出三种类型锆石。类型一锆石具有明显的振荡环带,部分锆石边部有少量裂隙,微量元素含量相对较低,重稀土元素(HREE)富集,具明显Ce的正异常和Eu的负异常,指示其为岩浆锆石。类型二锆石具核-幔-边结构,边部裂隙发育,核部与类型一锆石具有相似的CL和微量元素特征,为岩浆锆石;幔部呈深色海绵状,内部结构不均匀,偶见环带锆石残留,微量元素含量较高,具有较高的U和Th含量,Ce异常不明显,具热液锆石特征,为热液沿着裂隙进入锆石内部不完全热液改造的结果。类型三锆石的结构特征和微量元素含量与类型二锆石的幔部相似,具有异常高U和Th含量以及较高的Dα值,为类型二锆石近完全热液改造的结果。花岗伟晶岩作为岩浆演化晚期的产物,经过结晶分异,残留的岩浆热液富集微量元素,岩浆热液沿着锆石的裂隙进入晶体内部对锆石经过不同程度热液改造,形成了花岗伟晶岩中不同类型的锆石。

关键词：东秦岭花岗伟晶岩锆石LA-ICP-MS定年黑云母原位Rb-Sr定年热液锆石

南秦岭勉略构造带横现河地区变质沉积岩形成时代及物源——来自LA-ICP-MS碎屑锆石U-Pb年龄的证据

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西北地质 2020年第2期53卷 77-101页

作者：刘宝星裴先治李瑞保陈有炘王盟赵少伟长安大学地球科学与资源学院陕西西安710054 西部矿产资源与地质工程教育部重点实验室陕西西安710054

朱家山岩组、乔子沟岩片位于南秦岭勉略构造带横现河以北,是勉略构造带中强烈韧性变形的沉积岩系,是勉略构造混杂岩带的基质岩系,研究其形成时代、沉积物源,对于深入了解勉略构造带的形成时代与构造演化具有重要意义。笔者以横现河以北... 详细信息

朱家山岩组、乔子沟岩片位于南秦岭勉略构造带横现河以北,是勉略构造带中强烈韧性变形的沉积岩系,是勉略构造混杂岩带的基质岩系,研究其形成时代、沉积物源,对于深入了解勉略构造带的形成时代与构造演化具有重要意义。笔者以横现河以北地区朱家山岩组、乔子沟岩片中的变质沉积岩(绢英千枚岩)为研究对象,进行碎屑锆石LA ICP MS锆石U Pb年代学研究,探讨其形成时代及沉积物源。所获得的碎屑锆石年龄可以分为3组:古生代年龄组(375~542 Ma),可以划分为晚古生代早期—早古生代晚期年龄组(375~424 Ma),主要峰值为390 Ma、394 Ma,早古生代早期年龄组(530~542 Ma);新元古代年龄组(552~977 Ma),可以划分为新元古代晚期年龄组(552~797 Ma),主要峰值为758 Ma、787 Ma,新元古代早中期年龄组(800~977 Ma),主要峰值为855 Ma、951 Ma;中元古代晚期年龄组(1008~1124 Ma)。朱家山岩组、乔子沟岩片碎屑锆石最小年龄组分别为375~385 Ma(平均年龄为380.3 Ma)、377~389 Ma(平均年龄为383 Ma),说明朱家山岩组、乔子沟岩片浅变质沉积岩系的沉积时代不早于中—晚泥盆世。综合研究认为2件样品物源主要都来自勉略构造带、碧口微地块和扬子板块北缘地区的岩浆岩,沉积环境为裂陷盆地且由伸展裂陷过渡为稳定的台盆台地沉积。

关键词：南秦岭勉略构造带朱家山岩组乔子沟岩片碎屑锆石U Pb定年

Process intensification for the synthesis and purification of battery-grade li_(2)CO_(3)with microfluidics

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Particuology 2024年第7期90卷 106-117页

作者： Haodu li Jie Zhang lin Dai Le Du Jiqin Zhu The State Key Laboratory of Chemical Resource Engineering College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Battery-grade lithium carbonate(li_(2)CO_(3))with a purity of higher than 99.5 wt%is of great importance as a high value-added lithium ***,influences of different reaction systems and process control on product purity remain ***,a membrane dispersion microreactor was used to enhance the mass transfer of preparation and purification processes in homogeneous and heterogeneous *** systems of Na_(2)CO_(3)–liCl,NH_(4)HCO_(3)–liCl,and NH_(3)·H_(2)O−CO_(2)−liCl,CO_(2)purification based on carbonation and decomposition were *** li_(2)CO_(3)purity was increased by the improvement of mixing *** carbonation time was reduced by 62.5%and 58.3%for the NH_(3)·H_(2)O−CO_(2)and CO_(2)purification systems,*** the two ammonia-based systems,li_(2)CO_(3)particles with a purity of 99.7–99.8 wt%were one-step prepared with a size of 3–5μm,which also met the requirement of the battery-grade *** purity was further increased to 99.9 wt%by CO_(2)purification and liHCO_(3)*** investigation could provide a feasible alternative for the controllable preparation of battery-grade li_(2)CO_(3)in one or multiple steps.

关键词： Microfluidics Battery grade li_(2)CO_(3) Process intensification High purity

Ultrahigh strength and uniform corrosion in Zn-li alloys through ultrahigh pressure supersaturated solid solution treatment for biodegradable orthopedic applications

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Rare Metals 2024年第10期43卷 5284-5304页

作者： Wan-Ying li Yi-Long Dai Wen-Hao Cai Si-Han lin lin Guo De-Chuang Zhang Yuncang li Cuie Wen School of Materials Science and Engineering Xiangtan University Department of Prosthodontics Shanghai Ninth People′s HospitalShanghai Jiao Tong University Key Laboratory of Low Dimensional Materials&Application Technology Ministry of EducationXiangtan University School of Engineering RMIT UniversityMelbourne

Zn-li alloys are considered promising candidate materials for biodegradable orthopedic implant applications due to their high mechanical performance and good ***,the presence of a large number of second-phase particles in this class of Zn alloys can lead to severe localized degradation due to micro-galvanic corrosion,which is detrimental to the mechanical integrity of the alloys during tissue healing in the human *** this study we report ultrahigh strength,uniform corrosion,good cytocompatibility,and effective antibacterial ability in Zn-x li（x=0.3,0.5,0.7;wt%） alloys achieved through supersaturated solid solution treatment （SSST） at 375℃ under ultrahigh pressure of 3 GPa.A high concentration of β-liZn4phases coexisted with the-Zn matrix in the as-cast Zn-x li alloys,whereas almost all the li dissolved into the-Zn matrix of SSST *** yield strength was 437 MPa for SSST Zn-0.3li,592 MPa for SSST Zn-0.5 li and 686 MPa for SSST *** SSST Zn-li alloys showed uniform degradation with remarkably reduced degradation rates compared to their as-cast *** 25% concentration extracts of the Zn-x li alloys demonstrated no cytotoxicity toward MC3T3-E1 cells,and the alloys exhibited effective antibacterial ability agains methicillin-resistant staphylococcus aureus.

关键词： Corrosion behavior Mechanical property Supersaturated solid solution treatment (SSST) Ultrahigh pressure Zn-li alloy

Semi-automated detection of rangeland runoff and erosion control berms using high-resolution topography data

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International Soil and Water Conservation Research 2024年第1期12卷 217-226页

作者： li li Changjiang River Scientific Research Institute of Changjiang Water Resources Commission Wuhan430010China Research Center on Mountain Torrent&Geologic Disaster Prevention Ministry of Water ResourcesWuhan430010China University of Arizona School of Natural Resources and the EnvironmentTucsonAZ85719USA

An inventory of topographic modifications is essential to addressing their impacts on hydrological and morphological processes in human-altered ***,such inventories are generally *** study presents two workflows for semi-automatic detection of linear earthen runoff and erosion control berms in rangelands using high-resolution topographic *** workflows consist of initial object identification by applying either morphological grayscale reconstruction(MGR)or the Geomorphon(GEO)method,followed by identification refinements through filters based on objects’horizontal and vertical *** sites were selected within the Altar Valley,Arizona,in the southwestern United *** site was used for developing workflows and optimizing filter thresholds,and the other two sites were used to validate *** results showed that:1)The MGR-based workflow methodology could produce final precision and detection rates of up to 92%and 75%,respectively,and take less than 5 s for a 10.1 km^(2) site;2)The workflow based on the MGR method yielded greater identification accuracy than did the GEO workflow;3)Object length,orientation,and eccentricity were important characteristics for identifying earthen berms,and are sensitive to general channel flow direction and berm shape;4)Manual interrogation of topographic data and imagery can significantly improve identification precision *** proposed workflows will be useful for developing inventories of runoff and erosion control structures in support of sustainable rangeland management.

关键词： Earthen berm Rangeland Grayscale morphological reconstruction Geomorphon liDAR