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A perspective on the key factors of safety for rechargeable magnesium batteries

Journal of Energy Chemistry 2024年第7期94卷 656-676页

作者： Shuangshuang Tan Jie Xu Rongrui Deng qiannan zhao Chaohe Xu Guangsheng Huang Jingfeng Wang Fusheng Pan National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China National Innovation Center for Industry-Education Integration of Energy Storage Technology College of Materials Science and EngineeringChongqing UniversityChongqing 400044China Chongqing Institute of New Energy Storage Materials and Equipment Chongqing 401135China

Rechargeable Mg batteries(RMBs)have become one of the best subsitutes for lithium-ion batteries due to the high volumetric capacity,abundant resources,and uniform plating behavior of Mg metal anode.However,the safety hazard induced by the formation of high-modulue Mg dendrites under a high current density(10 mA cm^(-1))was still revealed in recent years.It has forced researchers to re-examine the safety of RMBs.In this review,the intrinsic safety factors of key components in RMBs,such as uneven plating,pitting and flammability of Mg anode,heat release and crystalline water decomposition of cathode,strong corrosion,low oxidition stability and flammability of electrolytes,and soforth,are systematacially summarized.Their origins,formation mechanisms,and possible safety hazards are deeply discussed.To develop high-performance Mg anode,current strategies including designing artificial SEl,three-dimensional substrates,and Mg alloys are summarized.For practical electrolytes,the configurations of boron-centered anions and simple Mg salts and the functionalized solvent with high boiling point and low flammability are suggested to comprehensively design.In addition,the future study should more focus on the investigation on the thermal runaway and decomposition of cathode materials and separa-tors.This review aims to provide fundamental insights into the relationship between electrochemistry and safety,further promoting the sustainable development of RMBs.

关键词： Rechargeable Mg batteries Battery safety Mg dendrites Electrolyte decomposition Intrinsic safety issues

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Planktonic microbial eukaryotes in polar surface waters: recent advances in high-throughput sequencing

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Marine Life Science & Technology 2021年第1期3卷 94-102页

作者： Qian Liu qiannan zhao Andrew McMinn Eun Jin Yang Yong Jiang Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China College of Marine Life Sciences Ocean University of ChinaQingdao 266003China Key Lab of Polar Oceanography and Global Ocean Change Ocean University of ChinaQingdao 266003China Institute for Marine and Antarctic Studies University of TasmaniaHobartAustralia Division of Polar Ocean Environment Korea Polar Research Institute213-3 Songdo-dongYeonsu-guIncheon 406-840Korea

Marine microbial eukaryotes are important primary producers and play critical roles in key biogeochemical cycles.Recent advances in sequencing technology have focused attention on the extent of microbial biodiversity,revealing a huge,previously underestimated phylogenetic diversity with many new lineages.This technology has now become the most important tool to understand the ecological signifcance of this huge and novel diversity in polar oceans.In particular,high-throughput sequencing technologies have been successfully applied to enumerate and compare marine microbial diversity in polar environments.Here,a brief overview of polar microbial eukaryote diversity,as revealed by in-situ surveys of the high-throughput sequencing on 18S rRNA gene,is presented.Using these‘omic’approaches,further attention still needs to be focused on diferences between specifc locations and/or entire polar oceans and on bipolar comparisons of diversity and distribution.

关键词： Marine microbial eukaryotes High-throughput sequencing Molecular surveys Bipolar

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纵横结合与返本开新——中国传统精神哲学的新书写

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中国哲学史 2024年第2期 18-26页

作者：丁四新赵乾男清华大学哲学系

张学智《中国哲学概论》富含中国哲学(史)书写的历史背景、生成脉络和当代指向,作者具有极强的使命意识。中国哲学是中国人对自己所处环境的觉解和对自己的行动及其结果的有系统的反思,这个定义是作者撰作《概论》的指导思想。《概论》... 详细信息

张学智《中国哲学概论》富含中国哲学(史)书写的历史背景、生成脉络和当代指向,作者具有极强的使命意识。中国哲学是中国人对自己所处环境的觉解和对自己的行动及其结果的有系统的反思,这个定义是作者撰作《概论》的指导思想。《概论》特别强调“哲学是靠概念思维的”,根据中国哲学的概念范畴体系,对于全书章节作了精心布局。《概论》的书写采用纵横结合的方法,横法五章是对于中国哲学之基本理论形态的解析,纵法一章通论了天人视域中的中国哲学。纵法与横法的运用都是由其书写内容决定的,两者在《概论》中都达到了契合地步。《概论》具有突出哲学性、纵横结合和返本开新等特点,发扬光大了冯友兰、张岱年的中国哲学(史)书写传统。

关键词：张学智《中国哲学概论》哲学性纵横结合

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The design of Co_(3)S_(4)@MXene heterostructure as sulfur host to promote the electrochemical kinetics for reversible magnesium-sulfur batteries

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Journal of Magnesium and Alloys 2021年第1期9卷 78-89页

作者： qiannan zhao Ronghua Wang Yuxin Zhang Guangsheng Huang Bin Jiang Chaohe Xu Fusheng Pan College of Aerospace Engineering Chongqing UniversityChongqing 400044China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China State Key Laboratory of High Performance Ceramics and Superfine Microstructures Shanghai 200050China

The rechargeable Mg-S batteries are attractive because of their resource abundances of Mg and S,high volumetric energy density,and less dendrite property of Mg anodes.However,the development is barred by the intrinsic low electronic conductivity of S and the discharge products as well as the lack of understanding the hidden electrochemical kinetics.Here,a Co_(3)S_(4)@MXene heterostructure is proposed as effective sulfur host for reversible Mg-S batteries.XPS results and density functional theory(DFT)calculation confirm that the chemical interaction between the decorated Co_(3)S_(4)nanocrystals host and polysulfide intermediates could well absorb and catalyze the polysulfides conversion,thus improve the electrochemical redox kinetics.Meanwhile,the MXene matrix could promote Mg ion diffusion dynamics greatly.As a result,the developed Mg-S batteries using the Co_(3)S_(4)@MXene-S as the cathode material could demonstrate high sulfur utilization with specific capacity of 1220 mAh g^(-1) and retain a capacity of 528 mAh g^(-1) after 100 cycles,together with a satisfactory rate performance even at 2 C.This work shed light on the advanced cathode design for reversible high energy Mg-S batteries.

关键词： Magnesium sulfur batteries MXene Co_(3)S_(4) Electrochemical sulfur conversion Mg ion diffusion

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国有企业改革与新兴产业布局:助推高质量转型发展的新策略

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商业观察 2024年第16期10卷 109-112,116页

作者：赵倩楠张凯济南城市建设集团有限公司山东济南250000

国有企业改革在我国经济改革中始终占有举足轻重的地位。文章围绕国有企业改革及新兴产业布局这一主题,论述其在实现高质量转型发展过程中的作用及影响。国有企业改革既是促进我国经济转型升级发展的重要途径,又是优化产业布局,加快新... 详细信息

国有企业改革在我国经济改革中始终占有举足轻重的地位。文章围绕国有企业改革及新兴产业布局这一主题,论述其在实现高质量转型发展过程中的作用及影响。国有企业改革既是促进我国经济转型升级发展的重要途径,又是优化产业布局,加快新兴产业发展的一项关键战略。文章旨在为国有企业改革提供一个新视角与新思路,推动我国经济更快、更好地可持续发展。

关键词：国有企业改革新兴产业高质量转型产业布局经济发展

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Rational Design of Layered SnS2 on Ultralight Graphene Fiber Fabrics as Binder-Free Anodes for Enhanced Practical Capacity of Sodium-Ion Batteries

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Nano-Micro Letters 2019年第4期11卷 173-184页

作者： Zongling Ren Jie Wen Wei Liu Xiaoping Jiang Yanheng Dong Xiaolong Guo qiannan zhao Guipeng Ji Ronghua Wang Ning Hu Baihua Qu Chaohe Xu College of Aerospace Engineering The State Key Laboratory of Mechanical TransmissionsChongqing UniversityChongqing 400044People’s Republic of China Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005People’s Republic of China College of Materials Science and Engineering Chongqing UniversityChongqing 400044People’s Republic of China MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems CQU-NUS Renewable Energy Materials and Devices Joint LaboratoryChongqing UniversityChongqing 400044People’s Republic of China

Generally,the practical capacity of an electrode should include the weight of non-active components such as current collector,polymer binder,and conductive additives,which were as high as 70 wt%in current reported works,seriously limiting the practical capacity.This work pioneered the usage of ultralight reduced graphene fiber(rGF)fabrics as conductive scaffolds,aiming to reduce the weight of nonactive components and enhance the practical capacity.Ultrathin SnS2 nanosheets/rGF hybrids were prepared and used as binder-free electrodes of sodium-ion batteries(SIBs).The interfused graphene fibers endow the electrode a porous,continuous,and conductive network.The in situ phase transformation from SnO2 to SnS2 could preserve the strong interfacial interactions between SnS2 and graphene.Benefitting from these,the designed binder-free electrode delivers a high specific capacity of 500 mAh g?1 after 500 cycles at a current rate of 0.5 A g?1 with almost 100%Coulombic efficiency.Furthermore,the weight percentage of SnS2 in the whole electrode could reach up to 67.2 wt%,much higher than that of common electrode configurations using Cu foil,Al foil,or carbon cloth,significantly highlighting the ultralight characters and advantages of the rGF fabrics for using as binder-free electrodes of SIBs.

关键词： SnS2 Graphene fiber fabric Binder-free electrode Practical capacity Sodium-ion batteries

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Freestanding polypyrrole nanotube/reduced graphene oxide hybrid film as flexible scaffold for dendrite-free lithium metal anodes

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Journal of Energy Chemistry 2021年第7期30卷 285-291页

作者： Gan Luo Xiaolin Hu Wei Liu Guanjie Lu qiannan zhao Jie Wen Jian Liang Guangsheng Huang Bin Jiang Chaohe Xu Fusheng Pan College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiChina College of Aerospace Engineering Chongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China

Lithium metal anode is the most potential anode material for the next generation high-energy rechargeable batteries owing to its highest specific capacity and lowest redox potential.Unfortunately,the uneven deposition of Li during plating/stripping and the formation of uncontrolled Li dendrites,which might cause poor battery performance and serious safety problems,are demonstrating to be a huge challenge for its practical application.Here,we show that a flexible and free-standing film hybriding with polypyrrole(PPy) nanotubes and reduced graphene oxide(rGO) can significantly regulate the Li nucleation and deposition,and further prohibit the formation of Li dendrites,owing to the large specific surface area,rich of nitrogen functional groups and porous structures.Finally,the high Coulombic efficiency and stable Li plating/stripping cycling performance with 98% for 230 cycles at 0.5 mA cm^(-2) and more than 900 hours stable lifespan are achieved.No Li dendrites form even at a Li deposition capacity as high as4.0 mA h cm^(-2).Besides,the designed PPy/rGO hybrid anode scaffold can also drive a superior battery performance in the lithium-metal full cell applications.

关键词： Lithium metal anode Polypyrrole nanotube Coulombic efficiency Lithium dendrites Uniform lithium deposition

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Distinct neuroanatomic subtypes in antipsychotic-treated patients with schizophrenia classified by the predefined classification in a never-treated sample

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Psychoradiology 2021年第4期1卷 212-224页

作者： qiannan zhao Jiao Li Yuan Xiao Hengyi Cao Xiao Wang Wenjing Zhang Siyi Li Wei Liao Qiyong Gong Su Lui Huaxi MR Research Center(HMRRC) Department of RadiologyWest China Hospital of Sichuan UniversityChengdu 610041China Research Unit of Psychoradiology Chinese Academy of Medical SciencesChengdu 610041China Functional and Molecular Imaging Key Laboratory of Sichuan Province West China Hospital of Sichuan UniversityChengdu 610041China The Clinical Hospital of Chengdu Brain Science Institute School of Life Science and TechnologyUniversity of Electronic Science and Technology of ChinaChengdu 610054China MOE Key Lab for Neuroinformation High-Field Magnetic Resonance Brain Imaging Key Laboratory of Sichuan ProvinceUniversity of Electronic Science and Technology of ChinaChengdu 610054China Center for Psychiatric Neuroscience Feinstein Institute for Medical ResearchManhassetNY 11030United States Division of Psychiatry Research Zucker Hillside HospitalGlen OaksNY 11004United States

Background:Distinct neuroanatomic subtypes have been identified in never-treated patients with schizophrenia based on cerebral structural abnormalities,but whether antipsychotic-treated patients would be stratified under the guidance of such previously formed classification remains unclear.Objective:The present study aimed to investigate alterations of brain structures in antipsychotic-treated patients with schizophrenia based on a predefined morphological classification and their relationships with cognitive performance.Methods:Cortical thickness,surface area,and subcortical volume were extracted from 147 antipsychotictreated patients with schizophrenia using structural magnetic resonance imaging for classification.The Brief Assessment of Cognition in Schizophrenia(BACS)and Positive and Negative Syndrome Scale(PANSS)were used to assess cognition and symptoms.Results:Antipsychotic-treated patients were categorized into three subtypes with distinct patterns of brain morphological alterations.Subtypes 1 and 2 were characterized by widespread deficits in cortical thickness but relatively limited deficits in surface area.In contrast,subtype 3 demonstrated cortical thickening mainly in parietal-occipital regions and widespread deficits in surface area.All three subgroups demonstrated cognitive deficits compared with healthy controls.Significant associations between neuroanatomic and cognitive abnormalitieswere only observed in subtype 1,where cortical thinning in the left lingual gyruswas conversely related to symbol coding performance.Conclusions:Similar to drug-naıve patients,neuroanatomic heterogeneity exists in antipsychotic-treated patients,with disparate associations with cognition.These findings promote our understanding of relationships between neuroanatomic abnormalities and cognitive performance in the context of heterogeneity.Moreover,these results suggest that neurobiological heterogeneity needs to be considered in cognitive research in schizophrenia.

关键词： schizophrenia neuroanatomic heterogeneity psychoradiology cognitive function antipsychotic medication

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SPOC+思维导图在急诊护理教学中的应用探究

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中国高等医学教育 2024年第1期 89-90页

作者：卢兵赵倩男吴伟中国医科大学附属第一医院辽宁沈阳110000

目的:探究SPOC联合思维导图教学模式在急诊临床护士护理教学中的应用。方法:2020年1月至2021年6月选取我科室护理人员54人,根据扑克牌抽签法随机抽取:抽到黑色卡牌的27人为对照组,按照传统培训方法进行教学;抽到红色卡牌的27人为试验组... 详细信息

目的:探究SPOC联合思维导图教学模式在急诊临床护士护理教学中的应用。方法:2020年1月至2021年6月选取我科室护理人员54人,根据扑克牌抽签法随机抽取:抽到黑色卡牌的27人为对照组,按照传统培训方法进行教学;抽到红色卡牌的27人为试验组,在传统培训方法基础上应用SPOC+思维导图培训方法进行教学。结果:试验组护士的理论、实践操作成绩均明显高于对照组,差异有统计学意义(P<0.001);试验组批判性思维能力测量成绩明显低于对照组,差异有统计学意义(P<0.001)。结论:SPOC教学方法增加护士的缝隙学习时间,SPOC+思维导图有利于护士对疾病护理流程的理解与记忆,提高学习兴趣。

关键词： SPOC+思维导图教学方法急诊护理临床护士

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Naturally occurring PA^(E206K)point mutation in 2009 H1N1 pandemic influenza viruses impairs viral replication at high temperatures

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Virologica Sinica 2024年第1期39卷 71-80页

作者： Mengmeng Cao qiannan Jia Jinghua Li Lili zhao Li zhu Yufan Zhang Shan Li Tao Deng National Institute of Pathogen Biology Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing100730China CAS Key Laboratory of Pathogen Microbiology and Immunology Institute of MicrobiologyChinese Academy of SciencesBeijing100101China

The emergence of influenza virus A pandemic H1N1 in April 2009 marked the first pandemic of the 21st century.In this study,we observed significant differences in the polymerase activities of two clinical 2009 H1N1 influenza A virus isolates from Chinese and Japanese patients.Sequence comparison of the three main protein subunits(PB2,PB1,and PA)of the viral RNA-dependent RNA polymerase complex and subsequent mutational analysis revealed that a single amino acid substitution(E206K)was responsible for the observed impaired replication phenotype.Further in vitro experiments showed that presence of PAE206K decreased the replication of influenza A/WSN/33 virus in mammalian cells and a reduction in the virus’s pathogenicity in vivo.Mechanistic studies revealed that PAE206K is a temperature-sensitive mutant associated with the inability to transport PB1–PA complex to the nucleus at high temperature(39.5℃).Hence,this naturally occurring variant in the PA protein represents an ideal candidate mutation for the development of live attenuated influenza vaccines.

关键词： H1N1 Influenza A virus Polymerase acidic protein Point mutation Viral replication

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