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Engineering Strategies for Suppressing the Shuttle Effect in lithium–Sulfur Batteries

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Nano-Micro Letters 2024年第1期16卷 187-221页

作者： jiayi li li Gao Fengying Pan Cheng Gong limeng Sun Hong Gao Jinqiang Zhang Yufei Zhao Guoxiu Wang Hao liu Joint International Laboratory On Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghaiPeople’s Republic of China Centre for Clean Energy Technology University of Technology SydneyBroadwaySydneyNSW 2007Australia

lithium–sulfur(li–S)batteries are supposed to be one of the most potential next-generation batteries owing to their high theoretical capacity and low ***,the shuttle effect of firm multi-step two-electron reaction between sulfur and lithium in liquid electrolyte makes the capacity much smaller than the theoretical *** methods were proposed for inhibiting the shuttle effect of polysulfide,improving corresponding redox kinetics and enhancing the integral performance of li–S ***,we will comprehensively and systematically summarize the strategies for inhibiting the shuttle effect from all components of li–S ***,the electrochemical principles/mechanism and origin of the shuttle effect are described in ***,the efficient strategies,including boosting the sulfur conversion rate of sulfur,confining sulfur or lithium polysulfides(LPS)within cathode host,confining LPS in the shield layer,and preventing LPS from contacting the anode,will be discussed to suppress the shuttle ***,recent advances in inhibition of shuttle effect in cathode,electrolyte,separator,and anode with the aforementioned strategies have been summarized to direct the further design of efficient materials for li–S ***,we present prospects for inhibition of the LPS shuttle and potential development directions in li–S batteries.

关键词： Shuttle effect Designed strategies li-S battery lithium polysulfides

Degree of shade tolerance shapes seasonality of chlorophyll, nitrogen and phosphorus levels of trees and herbs in a temperate deciduous forest

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Journal of Forestry Research 2024年第4期35卷 60-72页

作者： Jiajia Zeng Fan liu Yuan Zhu jiayi li Ying Ruan Xiankui Quan Chuankuan Wang Xingchang Wang Aulin College Northeast Forestry UniversityHarbin 150040People’s Republic of China Center for Ecological Research Northeast Forestry UniversityHarbin 150040People’s Republic of China Key Laboratory of Agricultural Water Resources Center for Agricultural Resources ResearchInstitute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuang 050021People’s Republic of China Institute of Applied Ecology Chinese Academy of SciencesShenyang 110016People’s Republic of China Key Laboratory of Sustainable Forest Ecosystem Management Ministry of EducationNortheast Forestry UniversityHarbin 150040People’s Republic of China

Forest productivity is closely linked to seasonal variations and vertical differentiation in leaf ***,leaf structural and chemical traits variation among co-existing species,and plant functional types within the canopy are poorly *** this study,the seasonality of leaf chlorophyll,nitrogen(N),and phosphorus(P)were quantified vertically along the canopy of four major tree species and two types of herbs in a temperate deciduous *** role of shade tolerance in shaping the seasonal variation and vertical differentiation was *** the entire season,chlorophyll content showed a distinct asymmetric unimodal pattern for all species,with greater chlorophyll levels in autumn than in spring,and the timing of peak chlorophyll per leaf area gradually decreased as shade tolerance *** a:b ratios gradually decreased with increasing shade *** N and P contents sharply declined during leaf expansion,remained steady in the mature stage and decreased again during leaf *** the seasons,the lower canopy layer had significantly higher chlorophyll per leaf mass but not chlorophyll per leaf area than the upper canopy layer regardless of degree of shade ***,N and P per leaf area of intermediate shade-tolerant and fully shade-tolerant tree species were significantly higher in the upper canopy than in the *** variations in N:P ratios suggest changes in N or P *** findings indicate that shade tolerance is a key feature shaping inter-specific differences in leaf chlorophyll,N,and P contents as well as their seasonality in temperate deciduous forests,which have significant implications for modeling leaf photosynthesis and ecosystem production.

关键词： Leaf traits Leaf nutrients Seasonal variations Chlorophyll Nitrogen Phosphorus Shade tolerance Canopy layers

LSM6 promotes cell proliferation and migration regulated by HMGB1 in laryngeal squamous cell carcinoma

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Engineered Regeneration 2024年第2期5卷 247-254页

作者： Dengbin Ma jiayi li Hui li Yao Tang Xia Gao Hong Chen Xiaoyun Qian Xiaohui Shen Department of Otolaryngology Head and Neck Surgery Research Institute of OtolaryngologyNanjing Drum Tower HospitalJiangsu Provincial Key Medical DisciplineAffiliated Hospital of medical SchoolNanjing UniversityNanjing210008China Department of Otorhinolaryngology Minda Hospital of Hubei Minzu UniversityEnshi445000China Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University 321 Zhongshan RoadNanjing210008China

Elevated levels of high mobility group protein B1(HMGB1)play a significant role in the pathogenesis of many diseases,but is particularly important for the formation of malignant ***,the function of HMGB1 and the underlying mechanism of laryngeal squamous cell carcinoma(LSCC)remain incompletely understood,causing *** we found immunohistochemistry from 97 LSCC tissues showed HMGB1 was upreg-ulated,which was associated with poor ***1 knockdown could significantly inhibit wound closure and colony *** full-genome gene expression microarray was performed to investigate the *** knockdown of HMGB1 by siRNA,among the expressed differential genes,10 genes were ran-domly selected for ***,shRNA lentivirus targeting these genes were constructed to explore their role in LSCC by cell proliferation ***6 downregulation was dramatically promoted by HMGB1 knockdown,resulting in higher expression in LSCC ***,downregulation of LSM6 could significantly suppress cell proliferation,migration and colony *** study indicated that HMGB1 promoted LSCC cell malig-nant phenotypes through regulation of *** anticipate that HMGB1-LSM6 could be a putative therapeutic target for LSCC.

关键词： HMGB1 LSM6 Laryngeal squamous cell carcinoma Cell proliferation Migration

980 nm Near-Infrared light-Emitting Diode Using All-Inorganic Perovskite Nanocrystals Doped with Ytterbium Ions

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Tsinghua Science and Technology 2024年第1期29卷 207-215页

作者： Zhenglan Ye Taoran liu Dan Chen Yazhou Yang jiayi li Yaqing Pang Xiangquan liu Yuhua Zuo Jun Zheng Zhi liu Buwen Cheng State Key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Intelligent Network Research Institute Zhejiang LabHangzhou 311100China

All-inorganic perovskite(CsPbX3)nanocrystals(NCs)have recently been widely investigated as versatile solution-processable light-emitting *** to its wide-bandgap nature,the all-inorganic perovskite NC light-Emitting Diode(LED)is limited to the visible region(400-700 nm).A particularly difficult challenge lies in the practical application of perovskite NCs in the infrared-spectrum *** this work,a 980 nm NIR all-inorganic perovskite NC LED is demonstrated,which is based on an efficient energy transfer from wide-bandgap materials(CsPbCl3 NCs)to ytterbium ions(Yb3+)as an NIR emitter doped in perovskite *** optimized CsPbCl3 NC with 15 mol%Yb3+doping concentration has the strongest 980 nm photoluminescence(PL)peak,with a PL quantum yield of 63%.An inverted perovskite NC LED is fabricated with the structure of ITO/PEDOT:PSS/poly-TPD/CsPbCl3:15 mol%Yb3+NCs/TPBi/liF/*** LED has an External Quantum Efficiency(EQE)of 0.2%,a Full Width at Half Maximum(FWHM)of 47 nm,and a maximum luminescence of 182 cd/m?.The introduction of Yb3+doping in perovskite NCs makes it possible to expand its working wavelength to near-infrared band for next-generation light sources and shows potential applications for optoelectronic integration.

关键词： perovskite nanocrystals rare-earth doping light-Emitting Diode(LED) near-infrared optical interconnection

Surface engineering of P2-type cathode material targeting long-cycling and high-rate sodium-ion batteries

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Journal of Energy Chemistry 2024年第10期97卷 444-452,I0009页

作者： Jun Xiao Yang Xiao Shijian Wang Zefu Huang jiayi li Cheng Gong Guilai Zhang Bing Sun Hong Gao Huiqiao li Xin Guo Yong Wang Hao liu Guoxiu Wang Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyBroadwaySydneyNew South Wales 2007Australia Joint International Laboratory on Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China State Key Laboratory of Materials Processing and Die and Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074HubeiChina

The widespread interest in layered P2-type Mn-based cathode materials for sodium-ion batteries(SIBs)stems from their cost-effectiveness and abundant ***,the inferior cycle stability and mediocre rate performance impede their further development in practical ***,we devised a wet chemical precipitation method to deposit an amorphous aluminum phosphate(AlPO_(4),denoted as AP)protective layer onto the surface of P2-type Na_(0.55)Ni_(0.1)Co_(0.7)Mn_(0.8)O_(2)(NCM@AP).The resulting NCM@5AP electrode,with a 5 wt%coating,exhibits extended cycle life(capacity retention of78.4%after 200 cycles at 100 mA g^(-1))and superior rate performance(98 mA h g^(-1)at 500 mA g^(-1))compared to pristine ***,our investigation provides comprehensive insights into the phase stability and active Na^(+)ion kinetics in the NCM@5AP composite electrode,shedding light on the underlying mechanisms responsible for the enhanced performance observed in the coated electrode.

关键词： Layered metal oxides Sodium-ion batteries P2-type structure Surface engineering

列宁对俄国革命主题的首次解答及其意义——基于《什么是“人民之友”以及他们如何攻击社会民主党人?》的研究

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马克思主义理论学科研究 2024年第4期10卷 51-60页

作者：吕佳翼南开大学马克思主义学院天津300350

列宁的《什么是“人民之友”以及他们如何攻击社会民主党人?》批判了自由主义民粹派对马克思主义的曲解和抨击及其关于俄国发展前途的错误观点,并揭露了这一错误思潮的本质。在这部著作中,列宁在马克思主义的指导下,通过对俄国经济关系... 详细信息

列宁的《什么是“人民之友”以及他们如何攻击社会民主党人?》批判了自由主义民粹派对马克思主义的曲解和抨击及其关于俄国发展前途的错误观点,并揭露了这一错误思潮的本质。在这部著作中,列宁在马克思主义的指导下,通过对俄国经济关系的政治经济学分析,对俄国革命的主题作出了首次解答。如果说列宁在此前只是从“客观趋势”的层面论述了俄国资本主义经济的发展,那么在这部著作中,列宁更进一步地从俄国马克思主义者的“主体立场”论述了对此应采取的辩证观点和革命实践的基本定向。这一著作不仅对列宁的思想具有奠基意义,发展了马克思主义革命理论,并且对俄国等其他经济文化相对落后国家的革命实践具有重要的指导意义,蕴含着重要的方法论价值。它启示我们在坚持马克思主义指导的同时必须充分研究当今时代和本国实际,大胆探索自己的独特道路,走出一条既吸纳现代社会文明成果又超越西方现代化弊端的中国式现代化道路。

关键词：列宁俄国革命工人阶级自由主义民粹派

塔里木盆地西北缘寒武系第二统肖尔布拉克组内的颤藻化石

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北京大学学报（自然科学版） 2024年第3期60卷 475-488页

作者：李佳益董琳石开波造山带与地壳演化教育部重点实验室北京大学地球与空间科学学院北京100871

通过岩石切片观察,在新疆塔里木盆地西北缘寒武纪第二世的肖尔布拉克组白云岩中发现大量丝状蓝菌化石,共鉴定出可归入颤藻目的丝状蓝菌类化石3属4种,包括Obruchevella meishucunensis,Oscillatorio-psis longa,Oscillatoriopsis sp.和Si... 详细信息

通过岩石切片观察,在新疆塔里木盆地西北缘寒武纪第二世的肖尔布拉克组白云岩中发现大量丝状蓝菌化石,共鉴定出可归入颤藻目的丝状蓝菌类化石3属4种,包括Obruchevella meishucunensis,Oscillatorio-psis longa,Oscillatoriopsis sp.和Siphonophycus typicum,均为肖尔布拉克组内的首次发现。化石保存精美,可以观察到Obruchevella内清晰的三层结构,即钙化的胶质鞘、有机质的管体壁和管内黑色丝状物,对这类化石的内部结构和鉴定特征起到补充作用。此次发现的颤藻化石丰富了肖尔布拉克组的生物多样性,为塔里木盆地的化石研究和生命演化研究提供了新材料。

关键词：颤藻肖尔布拉克组塔里木盆地寒武纪第二世

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中心城市科技创新能促进城市群协调发展吗?——兼论收入房价比的调节作用

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经济经纬 2024年第4期41卷 16-28页

作者：梁军李佳艺山东大学商学院山东威海264209

利用2007—2019年127个地级市的数据,系统检验了中心城市科技创新对城市群协调发展的影响机制,并讨论了收入房价比对二者关系的调节作用。研究发现:第一,中心城市科技创新水平的提高不仅显著促进了城市群协调发展,还加快了外围城市经济... 详细信息

利用2007—2019年127个地级市的数据,系统检验了中心城市科技创新对城市群协调发展的影响机制,并讨论了收入房价比对二者关系的调节作用。研究发现:第一,中心城市科技创新水平的提高不仅显著促进了城市群协调发展,还加快了外围城市经济增长收敛,并在不同地区和不同发展阶段的城市群表现出明显的异质性。第二,中心城市科技创新通过深化产业分工促进城市群协调发展。第三,收入房价比能够调节中心城市科技创新与城市群协调发展之间的关系,但调节效果存在区域异质性,仅在中部地区显著增强了中心城市科技创新对城市群协调发展的促进作用,对东部和西部地区没有明显的调节作用。研究结论不仅丰富了中心城市科技创新影响城市群协调发展的理论研究,且在提高收入房价比方面提供了政策启示。

关键词：中心城市科技创新城市群协调发展收入房价比产业分工调节效应

H_(2)S-releasing adhesive hydrogel as oral radioprotectant for gastrointestinal tract radioprotection

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Chinese Chemical Letters 2024年第1期35卷 392-400页

作者： Peng Shan Jing liao jiayi li Chengyan Wang Jie Zhou linqiang Mei Yunlu Dai Qiang Wang Wenyan Yin Laboratory for Micro-sized Functional Materials Department of Chemistry and College of Elementary EducationCapital Normal UniversityBeijing 100048China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Department of Pharmacy Southwest HospitalThe Third Military Medical UniversityChongqing 400038China Cancer Centre and Institute of Translational Medicine Faculty of Health SciencesUniversity of MacaoMacao SAR 999078China

Radiation damage can cause a series of gastrointestinal(GI)tract *** development of safe and effective GI tract radioprotectants still remains a great challenge ***,we firstly report an oral radioprotectant Gel@GYY that integrates a porous gelatin-based(Gel)hydrogel and a pH-responsive hydrogen sulfide(H2S)donor GYY4137(morpholin-4-ium 4 methoxyphenyl(morpholino)phosphinodithioate).Gel@GYY has a remarkable adhesion ability and long retention time,which not only enables responsive release of low-dose H2S in stomach and subsequently sustained release of H2S in the whole intestinal tract especially in the colon,but also ensures a close contact between H2S and GI *** released H2S can effectively scavenge free radicals induced by X-ray radiation,reduce lipid peroxidation level,repair DNA damage and recover vital superoxide dismutase and glutathione peroxidase ***,the released H2S inhibits radiation-induced activation of nuclear factorκB(NF-κB),thus reducing inflammatory cytokines levels in GI *** treatment,Gel@GYY displays efficient excretion from mice body due to its *** work provides a new insight for therapeutic application of intelligent H2S-releasing oral delivery system and potential alternative to clinical GI physical damage protectant.

关键词： Radiation Gastrointestinal tract radioprotection Hydrogen sulfide gas therapy Gelatin-based hydrogel Free radicals scavenging