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Hierarchical pomegranate-structure design enables stress management for volume release of Si anode

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Journal of Materials Science & Technology 2023年第26期157卷 1-10页

作者： Fang Di Zhenxing Wang Chong Ge Lixiang Li Xin Geng Chengguo Sun Haiming Yang weimin Zhou Dongying ju Baigang An Feng Li Key Laboratory of Energy Materials and Electrochemistry Liaoning Province School of Chemical EngineeringUniversity of Science and Technology LiaoningAnshan 114051China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Hainan Provincial Key Lab of Fine Chemistry School of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China Jihua Laboratory Guangdong ProvinceFoshan 528200China

Si is a promising anode material for lithium-ion batteries owing to its high theoretical ***-ever,large stress during(de)lithiation induces severe structural pulverization,electrical contact failure,and unstable solid-electrolyte interface,which hampers the practical application of Si ***,a Si-based anode with a hierarchical pomegranate-structure(HPS-Si)was designed to modulate the stress variation,and a sub-micronized Si-based sphere was assembled by the nano-sized Si nanospheres with sub-nanometer-sized multi-phase modification of the covalently linked SiO_(2-x),SiC,and *** sub-micronized HPS-Si stacked with Si nanospheres can avoid agglomerates during cycling due to the high surface energy of ***,the reasonable pore structure from SiO_(2) reduction owing to density difference is enough to accommodate the limited volume *** Si spheres with a size of about 50 nm can prevent ***_(2-x),and SiC as flexible and rigid layers,have been syner-gistically used to reduce the surface stress of conductive carbon layers to avoid *** covalent bonding immensely strengthens the link of the modification with Si nanospheres,thus resisting stress ***,a full cell comprising an HPS-Si anode and a LiCoO_(2) cathode achieved an energy density of 415 Wh kg^(-1) with a capacity retention ratio of 87.9%after 300 cycles based on the active *** is anticipated that the hierarchical pomegranate-structure design can provide inspiring insights for further studies of the practical application of silicon anode.

关键词： Stress management Silicon anode Hierarchical structure Covalent bonding Volume release

3D spiny AlF_(3)/Mullite heterostructure nanofiber as solid-state polymer electrolyte fillers with enhanced ionic conductivity and improved interfacial compatibility

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Journal of Energy Chemistry 2023年第1期76卷 503-515,I0013页

作者： Weicui Liu Lingshuai Meng Xueqiang Liu Lu Gao Xiaoxiao Wang junbao Kang Jingge ju Nanping Deng Bowen Cheng weimin Kang State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes School of Textile Science and Engineering Tiangong UniversityTianjin 300387China Institute of Systems Engineering Beijing 100010Chin

Lithium metal batteries assembled with solid-state electrolyte can offer high safety and volumetric energy density compared to liquid *** polymer solid-state electrolytes of poly(ethylene oxide)(PEO)are widely used in lithium metal solid-state batteries due to their unique ***,there are still some defects such as low ionic conductivity at room temperature and weak inhibition of lithium dendrite ***,the spiny inorganic nanofibers heterostructure with mullite whiskers grown on the surface of aluminum fluoride(AlF_(3))nanofibers are introduced into the PEOLi TFSI electrolytes for the first time to prepare composite solid-state *** AlF_(3)as a strong Lewis acid can adsorb anions and promote the dissociation of Li ***,the specially threedimensional(3D)structure enlarges the effective contacting interface with the PEO polymer,which allows the lithium ions to be transported not only along the large aspect ratio of AlF3nanofibers,but also along the mullite phase in the transmembrane direction ***,the transport channel of lithium ions at the spiny inorganic nanofibers-polymer interface is further *** from these advantages,the obtained composite solid-state electrolyte has a high ionic conductivity of 1.58×10^(-4)S cm^(-1)at 30℃and the lithium ions transfer number of *** addition,the AlF3has strong binding energy with anions,low electronic conductivity and wide electrochemical stability window,and reduced nucleation overpotential of lithium during cycling,which is positive for lithium dendrite suppression in solid-state ***,the assembled symmetric Li/Li symmetric batteries exhibit stable cycling performance at different area capacities of 0.15,0.2,0.3 and 0.4 m A h cm^(-2).More importantly,the LiFePO_(4)(LFP)/Li battery still has 113.5 m A h g-1remaining after 400 cycles at 50℃and the Coulomb efficiency is nearly 100%during the long ***,the interconnected struct

关键词： 3D spiny inorganic nanofibers Heterostructures Composite solid-state electrolytes Ionic conductivity

Organosilicon modified method to improve Li^+ storage capacity of graphene oxide (GO)

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Science China(Technological Sciences) 2020年第12期63卷 2709-2716页

作者： WANG Kun ju DongYing XU GuiYing HAN BeiBei CHAI MaoRong WANG YingXin Li LiXiang ZHANG XueHu UCIDA Masaya ZHOU weimin Key Laboratory of Energy Materials and Electrochemistry Research Liaoning Province School of Chemical EngineeringUniversity of Science and Technology LiaoningAnshan 114051China School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051China Advanced Science Research Laboratory Saitama Institute of Technology1690 FusaijiFukayaJapan JiXi Weida New Material Technology Co. LtdJixi 158100China

Organosilicon modified reduced graphene oxide(Mr GO) has been fabricated by direct organosilicon modification of graphene oxide(GO). Interestingly,it is observed that 3D rGO-like structures occurred after directly carrying out the organosilicon modification on the surface of GO. The obtained organosilicon Mr GO displays the more remarkable improvement of electrochemical performances than GO,which was verified by electrochemical measurements in detail. For instance,the organosilicon MrGO shows the cycling performances at 901 mA hg^-1 after 200 cycles at 0.1 Ag^-1 and 446 mA hg^-1 after 300 cycles at 2.0 Ag^-1,respectively. These results unveil that organic modification method is an effective way to improve the Li^+ storage capacity of general carbon materials.

关键词： graphene oxide(GO) surface modification organosilicon modification 3D rGO-like structure organic-inorganic concept lithium ion batteries(LIBs)

日光诱导叶绿素荧光估算中国典型生态系统总初级生产力的能力

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遥感技术与应用 2017年第2期32卷 363-373页

作者：刘青瑞居为民张永光张雷明王绍强周艳莲赵风华闫俊华韩士杰郝彦宾陈世苹李英年项文化南京大学国际地球系统科学研究所江苏南京210023 南京大学地理与海洋科学学院江苏南京210023 江苏省地理信息技术重点实验室江苏南京210023 中国科学院地理科学与资源研究所北京100101 中国科学院华南植物园广东广州510650 中国科学院沈阳应用生态研究所辽宁沈阳110000 中国科学院大学北京100049 中国科学院植物研究所北京100093 中国科学院西北高原生物研究所青海西宁810008 湖南会同杉木林生态系统国家野外科学观测研究站湖南会同438107

陆地生态系统总初级生产力(GPP,Gross Primary Productivity)是陆地生态系统碳循环的重要分量,提高其估算精度具有重要的科学意义。由于受多种因子的影响,GPP的时空变异明显,其估算结果存在较大的不确定性。日光诱导叶绿素荧光(SIF,Sun-... 详细信息

陆地生态系统总初级生产力(GPP,Gross Primary Productivity)是陆地生态系统碳循环的重要分量,提高其估算精度具有重要的科学意义。由于受多种因子的影响,GPP的时空变异明显,其估算结果存在较大的不确定性。日光诱导叶绿素荧光(SIF,Sun-Induced Chlorophyll Fluorescence)与GPP密切相关,近年来被应用于估算区域和全球GPP,但其在中国生态系统的适用性尚不清楚。以中国8个典型植被生态系统为研究对象,驱动两叶光能利用率模型(TL-LUE,TwoLeaf Light Use Efficiency Model)模拟以站点为中心0.5°×0.5°区域内的月GPP,验证SIF估算GPP的能力。结果表明,SIF具有监测中国典型植被生态系统GPP的能力,月SIF与TL-LUE模拟的月GPP之间显著相关,其中5个生态系统中两者的R2高于0.8,最高达到0.91,GPP与SIF变化的斜率随生态系统类型变化。模拟的GPP与SIF遥感数据的季节变化特征相同,两者之间的一致性在生长季节好于非生长季节;SIF能更好地监测农田GPP的季节变化。

关键词：陆地生态系统总初级生产力日光诱导叶绿素荧光(SIF) 两叶光能利用率模型(TL-LUE)

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中国碳收支:1980~2021年

Science Bulletin 2024年第1期69卷 114-124页

作者：夏晓圣任培阳王旭辉刘丹陈修治丹利何斌何洪林居为民梁敏琪陆星劼彭静覃章才夏江周郑博魏静乐旭于贵瑞朴世龙袁文平 School of Atmospheric Sciences Guangdong Province Data Center of Terrestrial and Marine Ecosystems Carbon CycleSun Yat-sen UniversityZhuhai 510245China Sino-French Institute for Earth System Science College of Urban and Environmental SciencesPeking UniversityBeijing 100091China State Key Laboratory of Tibetan Plateau Earth System Resources and EnvironmentInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Regional Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China State Key Laboratory of Earth Surface Processes and Resource Ecology College of Global Change and Earth System ScienceBeijing Normal UniversityBeijing 100875China Synthesis Research Center of China’s Ecosystem Research Network Key Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China International Institute for Earth System Science Nanjing UniversityNanjing 210023China Tianjin Key Laboratory of Water Resources and Environment Tianjin Normal UniversityTianjin 300387China Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science&TechnologyNanjing 210044China

As one of the world's largest emitters of greenhouse gases,China has set itself the ambitious goal of achieving carbon peaking and carbon ***,it is crucial to quantify the magnitude and trend of sources and sinks of atmospheric carbon dioxide(CO_(2)),and to monitor China's progress toward these *** state-of-the-art datasets and models,this study comprehensively estimated the anthropogenic CO_(2)emissions from energy,industrial processes and product use,and waste along with natural sources and sinks of CO_(2)for all of China during *** recognize the differences among various methods of estimating greenhouse emissions,the estimates are compared with China's National Greenhouse Gas Inventories(NGHGIs)for 1994,2005,2010,2012,and *** CO_(2)emissions in China have increased by 7.39 times from 1980 to 12.77 Gt CO_(2)a^(-1)in *** benefiting from ecological projects(e.g.,Three Norths Shelter Forest System Project),the land carbon sink in China has reached 1.65 Gt CO_(2)a^(-1)averaged through 2010-2021,which is almost 15.81 times that of the carbon sink in the *** average,China's terrestrial ecosystems offset 14.69%±2.49%of anthropogenic CO_(2)emissions through *** provincial-level administrative regions of China,Xizang and Qinghai,have achieved carbon neutrality according to our estimates,but nearly half of the administrative regions of China have terrestrial carbon sink offsets of less than 10%of anthropogenic CO_(2)*** study indicated a high level of consistency between NGHGIs and various datasets used for estimating fossil CO_(2)emissions,but found notable differences for land carbon *** estimates of the terrestrial carbon sinks of NGHGIs urgently need to be verified with process-based models which integrate the comprehensive carbon cycle processes.

关键词： CO_(2)emission Land carbon sink China Carbon neutrality Carbon budget

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全球碳盘点卫星遥感监测方法、进展与挑战

遥感学报 2022年第2期26卷 243-267页

作者：刘良云陈良富刘毅杨东旭张兴嬴卢乃锰居为民江飞尹增山刘国华田龙飞胡登辉毛慧琴刘思含张建辉雷莉萍范萌张雨琮周翔吴一戎中国科学院空天信息创新研究院北京100094 中国科学院大气物理研究所北京100029 中国气象局国家卫星气象中心北京100081 南京大学南京210023 中国科学院微小卫星创新研究院上海201203 生态环境部卫星环境应用中心北京100094

以全球变暖为主要特征的气候变化已成为全球性环境问题,对全球可持续发展带来严峻挑战。2015年《巴黎协定》确定了自2020年后国家自主贡献的减排方式,并从2023年开始每5 a开展一次全球碳盘点。2019年第49届IPCC全会明确增加了基于卫星... 详细信息

以全球变暖为主要特征的气候变化已成为全球性环境问题,对全球可持续发展带来严峻挑战。2015年《巴黎协定》确定了自2020年后国家自主贡献的减排方式,并从2023年开始每5 a开展一次全球碳盘点。2019年第49届IPCC全会明确增加了基于卫星遥感的排放清单校验方法。欧盟、美国、日本、加拿大等正在大力发展温室气体排放的MVS(Monitoring and Verification Support)能力。本文调研分析了全球碳盘点对卫星遥感技术的需求,介绍了全球碳盘点卫星遥感的技术原理,梳理了温室气体卫星遥感、生态系统碳源汇卫星遥感估算、人为源碳排放卫星遥感、碳通量同化估算等全球碳盘点卫星遥感核心环节的研究现状与进展,分析了当前卫星遥感技术对全球碳盘点任务的支撑能力,并结合国内外发展趋势,针对性地提出中国的碳监测卫星计划方案,并展望了中国开展全球碳盘点卫星遥感监测重点任务,期望为中国全球碳盘点卫星遥感体系建设提供思路与方案。

关键词：全球变暖碳盘点碳排放碳源汇卫星遥感同化

Cretaceous source to sink system reconstruction of northeastern Asian continental margin:Insight from integrated detrital geochronology in NE China

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Geoscience Frontiers 2023年第5期14卷 213-232页

作者： Jianping Zhou István Dunkl Yongjiang Liu Sanzhong Li weimin Li Hilmar von Eynatten University of Göttingen Geoscience CenterDepartment of Sedimentology and Environmental GeologyGoldschmidtstrasse 3Göttingen D-37077Germany Frontiers Science Center for Deep Ocean Multispheres and Earth System Key Lab of Submarine Geosciences and Prospecting Techniquesand College of Marine GeosciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Mineral Resources Laoshan LaboratoryQingdao 266100China College of Earth Sciences Jilin UniversityJianshe Str.2199Changchun 130061China

The Cretaceous sedimentary successions in NE China are largely incomplete as the basins are inverted and younger strata are *** for the Songliao Basin,whose depositional record has remained relatively intact,the burial record to the east was interrupted in the late Early or Late *** is still controversy on the possible connection between the Songliao Basin and the eastern basin group,as well as the extent of the previously suggested“pan-Sanjiang”proto-basin that covered most current eastern satellite *** address these questions,we studied modern river catchments of variable sizes from sediment-supplying basement highs that cover most of eastern NE China to track the intense denudation events and provenance changes through the *** found a great inconsistency between detrital age patterns of the modern river sands and the spatial proportions of the source *** detrital age distributions allow to re-evaluate the basement units that are mostly composed of the Triassic–jurassic igneous suite and some metasedimentary units with Paleozoic ages,but the contribution from Proterozoic formations is *** the newly dated modern catchment detrital U-Pb ages,the region-wide compilation of the basement emplacement ages,and the U-Pb ages in the Cretaceous formations in NE China,we systematically refine the Cretaceous provenance *** the Early Cretaceous,the eastern satellite basins accumulated sediments from the Lesser Xing’an range(LXR)in the west,Zhangguangcai range(ZGCR)in the south,and the Nadanhada terrane(NT)in the *** sediment of the southern Songliao Basin derived from the North China Craton(NCC)and from ZGCR but barely from the Great Xing’an Range(GXR).The Jiamusi uplift(ju)did not provide sediments to the eastern satellite basins and the Songliao *** the Late Cretaceous,the eastern satellite basins received sediments from the exhumed ju but barely from ZGCR and *** Songliao Basin still accumula

关键词： Detrital zircon U-Pb Modern sediment Source to sink Provenance change NE China

Candidate therapeutic agents in a newly established triple wild-typemucosalmelanoma cell line

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Cancer Communications 2022年第7期42卷 627-647页

作者： Chaoji Shi Ziyue Gu Shengming Xu Houyu ju Yunteng Wu Yong Han Jiayi Li Chuwen Li Jing Wu Lizhen Wang Jiang Li Guoyu Zhou weimin Ye Guoxin Ren Zhiyuan Zhang Rong Zhou Department of Oral and Maxillofacial-Head Neck Oncology Shanghai Ninth People’s HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineShanghai 200011P.R.China National Clinical Research Center for Oral Diseases Shanghai 200011P.R.China Shanghai Key Laboratory of Stomatology&Shanghai Research Institute of Stomatology Shanghai 200011P.R.China Research Unit of Oral and Maxillofacial Regenerative Medicine Chinese Academy of Medical SciencesShanghai 200011P.R.China Department of Oral Pathology Ninth People’s HospitalShanghai Jiao Tong UniversitySchool of MedicineShanghai 200011P.R.China

Background:Mucosalmelanoma has characteristically distinct genetic features and typically poor *** lack of representativemucosal melanoma models,especially cell lines,has hindered translational research on this melanoma *** this study,we aimed to establish and provide the biological properties,genomic features and the pharmacological profiles of a mucosal melanoma cell line that would contribute to the understanding and treatment optimization of molecularly-defined mucosal melanoma ***:The sample was collected from a 67-year-old mucosal melanoma patient and processed into pieces for the establishment of cell line and patientderived xenograft(PDX)*** proliferation and tumorigenic property of cancer cells from different passageswere evaluated,andwhole-genome sequencing(WGS)was performed on the original tumor,PDX,established cell line,and the matched blood to confirm the establishment and define the genomic features of this cell *** was conducted to depict the architecture of amplified regions detected by ***-throughput drug screening(HTDS)assay including a total of 103 therapeutic agents was implemented on the established cell line,and selected candidate agents were validated in the corresponding PDX ***:A mucosal melanoma cell line,MM9H-1,was established which exhibited robust proliferation and tumorigenicity after more than 100 serial *** analysis of MM9H-1,corresponding PDX,and the original tumor showed genetic fidelity across genomes,and MM9H-1 was defined as a triple wild-type(TWT)melanoma subtype lacking well-characterized“driver mutations”.Instead,the amplification of several oncogenes,telomerase reverse transcriptase(TERT),v-Rafmurine sarcoma viral oncogene homolog B1(BRAF),melanocyte Inducing transcription factor(MITF)and INO80 complex ATPase subunit(INO80),via large-scale genomic rearrangement potentially contributed to oncogenesis of ***,HTDS identified proteasome

关键词： bortezomib cell line extrachromosomal DNA high-throughput drug screening mucosal melanoma patient derived tumor cells patient-derived xenograft whole-genome sequencing

基于多源卫星遥感的高分辨率全球碳同化系统研究

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地球科学进展 2016年第11期31卷 1105-1110页

作者：居为民方红亮田向军江飞占文凤刘洋王正兴何剑锋王绍强彭书时张永光周艳莲贾炳浩杨东旭符瑜李荣柳竟先王海鲲李贵才陈卓奇江苏省地理信息技术重点实验室南京大学国际地球系统科学研究所江苏南京210023 中国科学院地理科学与资源研究所北京100101 中国科学院大气物理研究所北京100029 北京大学城市与环境科学学院北京100871 南京大学地理与海洋科学科学学院江苏南京210023 南京大学大气科学学院江苏南京210023 南京大学环境学院江苏南京210023 国家卫星气象中心北京100081 北京师范大学全球变化与地球系统科学学院北京100875

2016年4月签署的"巴黎协定"的目标是到21世纪下半叶全球人为碳排放与生态系统碳汇持平,为了实现这一目标需要精确计量全球不同地区的碳通量,而全球碳同化系统是有效的技术手段。为此,国家科学技术部在"十三五"期间部署的国家重点研发计... 详细信息

2016年4月签署的"巴黎协定"的目标是到21世纪下半叶全球人为碳排放与生态系统碳汇持平,为了实现这一目标需要精确计量全球不同地区的碳通量,而全球碳同化系统是有效的技术手段。为此,国家科学技术部在"十三五"期间部署的国家重点研发计划"全球变化及应对"专项资助了"基于多源卫星遥感的高分辨率全球碳同化系统研究"项目。将发展生物圈和大气圈关键参数多源遥感协同反演技术体系、多源卫星与地面观测数据联合碳同化算法,进而建立耦合生态系统模型的高分辨率全球碳同化系统,联合同化多源观测数据,优化生态系统模型关键参数、光合和呼吸碳通量、重点区域人为源碳通量,定量揭示全球陆地生态系统和重点区域人为源碳通量时空格局、生态系统碳源汇驱动机制,为全球变化与应对专项目标的实现和国家决策提供技术与数据支持。

关键词：协同反演联合同化碳同化系统时空格局