检索结果-南通市图书馆

A_(2)B_(7)-type La-Mg-Ni alloys prepared by Mg thermal diffusion for improved hydrogen storage performance

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第7期43卷 3260-3272页

作者： Yong-Xi Zhang Guan-Jiu Wu Jing Gu Hong-xing Kang Yuan li Di Zhou Wen-feng Wang Lu Zhang Shu-Min Han Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China Department of Chemistry and Biochemistry San Diego State UniversitySan DiegoCA92182-1030USA State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China

A novel approach based on thermal diffusion was used to achieve controllable Mg content in A_(2)B_(7)-type La-Mg-Ni-based *** formation mechanism of the A_(2)B_(7)-type phase as a result of the thermal diffusion process and the effect of Mg content on hydrogen storage performance were investigated.X-ray diffraction(XRD)patterns and Rietveld refinement results showed that increased Mg transformed the LaNi_(5)phase in the La_(0.74)Sm_(0.03)Y_(0.23)Ni_(4.32)Al_(0.04)precursor alloy into a superlattice *** electron microscopy(SEM)images showed that Mg was evenly distributed in the alloy *** in the superlattice significantly inhibited the phase decomposition of the superlattice structure during the hydrogen absorption/desorption *** A_(2)B_(7)-type La_(0.57)Sm_(0.02)Y_(0.18)Mg_(0.23)Ni_(3.38)Al_(0.03)alloy composed of Gd_(2)co_(7)and Ce_(2)Ni_(7)phases was successfully *** pressure-composition isotherm profiles showed that the alloy had a hydrogen storage capacity as high as 1.73 wt%,with good cycling *** 50 cycles of hydrogen absorption/desorption,the alloy retained a hydrogen storage capacity of 1.45 wt%,with a capacity retention rate of up to 84.28%.The Mg thermal diffusion process thus provides a new approach for the controlled preparation of La-Mg-Ni-based alloys.

关键词： La-Mg-Ni-based hydrogen storage alloy A_(2)B_(7)-type superlattice alloy Mg thermal diffusion process Phase transformation Hydrogen storage property

Non-flammable long chain phosphate ester based electrolyte via competitive solventized structures for high-performance lithium metal batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第10期97卷 156-165页

作者： li liao Zhiqiang Han Xuanjie feng Pan Luo Jialin Song Yin Shen Xiaoshuang Luo Xinpeng li Xuanzhong Wen Bo Yu Junchen Chen Bingshu Guo Mingshan Wang Yun Huang Hongmei Zhang Mengmeng Yin Jiangtao liu Yuanhua lin xing li School of New Energy and Materials Southwest Petroleum University Beijing Advanced Innovation Center for Materials Genome Engineering Center for Green Innovation School of Mathematics and Physics University of Science and Technology Beijing State Key Laboratory of Advanced chemical Power Sources Guizhou Meiling Power Sources Co.Ltd

Safety remains a persistent challenge for high-energy-density lithium metal batteries（LMBs）.The development of safe and non-flammable electrolytes is especially important in harsh conditions such as high ***,a flame-retardant,low-cost and thermally stable long chain phosphate ester based（tributyl phosphate,TBP） electrolyte is reported,which can effectively enhance the cycling stability of highly loaded high-nickel LMBs with high safety through co-solvation *** interfacial compatibility between TBP and electrode is effectively improved using a short-chain ether（glycol dimethyl ether,DME）,and a specially competitive solvation structure is further constructed using lithium borate difluorooxalate（liDFOB） to form the stable and inorganic-rich electrode *** from the presence of the cathode electrolyte interphase（CEI） and solid electrolyte interphase（SEI） enriched with liF and lixPOyFz,the electrolyte demonstrates excellent cycling stability assembled using a 50 μm lithium foil anode in combination with a high loading NMC811(15.4 mg cm-2) cathode,with 88% capacity retention after 120 ***,the electrolyte exhibits excellent high-temperature characteristics when used in a 1-Ah pouch cell（N/P=0.26）,and higher thermal runaway temperature（238℃） in the ARC（accelerating rate calorimeter） demonstrating high *** novel electrolyte adopts long-chain phosphate as the main solvent for the first time,and would provide a new idea for the development of extremely high safety and high-temperature electrolytes.

关键词： Battery safety lithium metal batteries Long chain phosphate ester Non-flammable electrolyte Solvation structure

Progress and key challenges in catalytic combustion of lean methane

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第12期75卷 173-215,I0005页

作者： Xiangbo feng Lei Jiang Danyang li Shaopeng Tian xing Zhu Hua Wang Chi He Kongzhai li Xi’an Key Laboratory of Advanced Photoelectronics Materials and Energy conversion Device School of ScienceXijing UniversityXi’an 710123ShaanxiChina State Key Laboratory of complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093YunnanChina Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093YunnanChina State Key Laboratory of Multiphase Flow in Power Engineering School of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049ShaanxiChina National Engineering Laboratory for VOCs Pollution control Material&Technology University of Chinese Academy of SciencesBeijing 101408China

As a primary type of clean energy,methane is also the second most important greenhouse gas after co_(2)due to the high global warming *** quantities of lean methane(0.1–1.0 vol%)are emitted into the atmosphere without any treatment during coal mine,oil,and natural gas production,thus leading to energy loss and greenhouse *** general,it is challenging to utilize lean methane due to its low concentration and flow instability,while catalytic combustion is a vital pathway to realize an efficient utilization of lean methane owing to the reduced emissions of polluting gases(e.g.,NOxand co)during the *** particular,to efficiently convert lean methane,it necessitates both the designs of highly active and stable heterogeneous catalysts that accelerate lean methane combustion at low temperatures and smart reactors that enable autothermal operation by optimizing heat *** this review,we discuss the in-depth development,challenges,and prospects of catalytic lean methane combustion technology in various configurations,with particular emphasis on heat management from the point of view of material design combined with reactor *** target is to describe a framework that can correlate the guiding principles among catalyst design,device innovation and system optimization,inspiring the development of groundbreaking combustion technology for the efficient utilization of lean methane.

关键词： Lean methane combustion Catalyst design Heat management Reactor optimization Catalytic mechanism

Modifying Poly(propylene carbonate) with Furan-based Non-Isocyanate Polyurethanes

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2023年第7期41卷 1069-1077页

作者： Xiao-Jing li Ying-feng Wen Yong Wang xing-Ping Zhou Xiao-lin Xie Key Laboratory for Material Chemistry of Energy conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan430074China

Poly(propylene carbonate) (PPC) is gaining significant momentum as a biodegradable polymer using co_(2) as an abundant, low-cost and renewable feedstock. Yet, PPC suffers from unsatisfactory thermal and mechanical properties, and its blends with other synthetic polymers as the second component typically exhibit poor compatibility. Herein, novel furan-based non-isocyanate polyurethanes (NIPUs) with high molecular weights and narrow distributions have been synthesized starting from 5-hydroxymethylfurfural (HMF) via a four-step procedure including reduction, glycidylation, carbonation of co_(2) and step-growth polymerization with diamines. Owing to the structural similarity and intermolecular hydrogen bonding interactions, furan-based NIPUs display good compatibility with PPC. A sea-island morphology can be observed in SEM images of PPC/NIPU blends, where the NIPU phases are randomly dispersed in the PPC matrix. Moreover, the blends exhibit only one Tg (higher than both that of PPC and the corresponding NIPU) on the DSC curves, which first increase and then decrease when increasing the content of NIPUs from 0 wt% to 15 wt%. Notably, the physical crosslinking formed by hydrogen bonding interactions, coupled with the rigidity of furan rings, confer simultaneous improvements of elongation at the break and tensile strength, affording high-performance co_(2)-based biodegradable polymeric materials with low carbon footprint, good sustainability, and ideal biocompatibility.

关键词： PPC co_(2) NIPU HMF Blends

co_(2)-based Biodegradable Supramolecular Polymers with Well-tunable Adhesive Properties

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2022年第1期40卷 47-55页

作者： Xiao-Jing li Ying-feng Wen Yong Wang Hai-Yan Peng xing-Ping Zhou Xiao-lin Xie Key Laboratory for Material Chemistry of Energy conversion and Storage Ministry of EducationSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Supramolecular adhesives that enable debonding on-demand are of significant research interest for the development of adaptive and smart materials,yet,biodegrable supramolecular adhesives have been rarely ***,telechelic,three-armed and four-armed co_(2)-based polyols with close molecular weights and various content(or carbonate unite content)have been synthesized via a zinc-cobalt double metal cyanide complex catalyzed ring-opening copolymerization of co_(2) and propylene oxide,and further exploited as sustainable and biodegradable building blocks for supramolecular polymers(SMPs)with 2-ureido-4[1H]-pyrimidinone(UPy)***,the orthogonal modulation of the co_(2) content and the topology of co_(2)-based polyols provide a unique opportunity to fine-tune the surface energy as well as the cohesive strength of the resulting co_(2)-based ***,a three-armed SMP with 44%co_(2)(3UPy-co_(2)-44%)can well balance the trade-off between surface energy and cohesive strength,therefore bestowing a high adhesive strength of 7.5 and 9.7 MPa towards stainless steel and wood substrates respectively by testing the corresponding single lap ***,the light-responsive adhesion property of 3UPy-co_(2)-44%has been demonstrated exemplarily by blending with a UV sensitizer.

关键词： Biodegradable polymer Adhesive co_(2)-based polyol ROcoP Supramolecular polymer

气相色谱-静电场轨道阱质谱在食品和药品分析中的研究进展

在线全文

学校读者我要写书评

暂无评论

药物分析杂志 2024年第1期44卷 1-10页

作者：吴炎培原文鹏胡新华聂黎行黄烈岩邢江涛于健东魏锋马双成中国食品药品检定研究院北京100050 深圳市人民医院(暨南大学第二临床医学院南方科技大学第一附属医院)药学部深圳518020 赛默飞世尔科技(中国)有限公司北京100013 国家药典委员会北京100061

气相色谱-静电场轨道阱质谱(gas chromatography-Orbitrap mass spectrometry,GC-Orbitrap/MS)作为新兴的高分辨气质联用技术,可实现挥发性成分的精确质量检测和高通量定性定量分析,具有灵敏度高,选择性强,线性动态范围宽等优点,能够很... 详细信息

气相色谱-静电场轨道阱质谱(gas chromatography-Orbitrap mass spectrometry,GC-Orbitrap/MS)作为新兴的高分辨气质联用技术,可实现挥发性成分的精确质量检测和高通量定性定量分析,具有灵敏度高,选择性强,线性动态范围宽等优点,能够很好地应对复杂基质中多种痕量物质分析带来的挑战,近年已开始应用于环境、工业、食品、制药、司法、临床等领域。本文对GC-Orbitrap/MS技术进行全面综述,阐述其基本原理及技术特点,介绍该技术在食品与药品分析研究中的应用进展,包括食品中农药残留检查、持久性有机物检测、香气物质分析和化学药品杂质分析与中药质量评价,并重点分析在超痕量成分测定和未知化合物鉴别方面的优势。最后,从高分辨率标准数据库的建立、可变电子电压技术的应用、样品前处理方式的选择开发与优化、二维GC-Orbitrap/MS串联等角度,提出GC-Orbitrap/MS未来发展方向并展望其应用前景。

关键词：气相色谱-静电场轨道阱质谱高分辨质谱食品药品农药残留持久性有机物香气物质杂质分析中药质量评价综述

Atomically-precise Janus polyoxometalate catalyst with tunable water splitting activity

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2023年第6期66卷 1771-1780页

作者： Zhimin Wang xing Xin Zheng li Mo Zhang Jiangwei Zhang Yeqin feng Junhao Zhang Hongjin Lv Guo-Yu Yang MOE Key Laboratory of Cluster Science Beijing Key Laboratory of Photoelectroic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 102488China college of Chemistry and chemical Engineering Inner Mongolia UniversityHohhot 010021China

The development of bifunctional catalysts for solar-driven hydrogen and oxygen evolution has been regarded as a challenging but interesting research *** promising multi-electron-transfer catalysts,previously reported polyoxometalate(POM)-based catalysts often contain only a single type of transition metal substitution for driving either hydrogen production or oxygen ***,a viable two-step parental substitution approach has been developed to synthesize two structurally-new mixed-transition-metal-substituted polyoxometalates(mixed TMSPs),K_(6)Na_(4)[Mn_(2)Ni_(2)(H_(2)O)2(PW_(9)O_(34))2]·21H_(2)O({Mn_(2)Ni_(2)})and K10[Mn_(2)co_(2)(H_(2)O)2(PW_(9)O_(34))2]·35H_(2)O({Mn_(2)co_(2)}),using Na_(12)[Mn_(2)Na_(2)(PW_(9)O_(34))2]·36H_(2)O({Mn_(2)Na_(2)})as the *** results confirmed the nearly quantitative substitution of Na+with Ni_(2)+and co_(2+)ions.X-ray absorption fine structure(XAFS)spectroscopy revealed that the Mn atoms are preferentially located in the internal positions of the central belt while Ni and co atoms preferentially reside in the external,solvent-accessible *** from the second substitution of catalytically active transition metals,the resulting{Mn_(2)Ni_(2)}and{Mn_(2)co_(2)}can be utilized as Janus catalysts towards H_(2) evolution and O_(2) evolution under visible light irradiation with greatly-enhanced activity compared to that of parental{Mn_(2)Na_(2)}.The introduction of mixed transition metals into POM structures not only enriches the POMs family,but also provides an effective strategy to control electronic structures and catalytic properties of POM-based catalysts at the atomic level.

关键词： Janus polyoxometalate catalyst mixed-transition-metal substitution X-ray absorption fine structure(XAFS) H evolution O evolution

Electrolyte induced synergistic construction of cathode electrolyte interphase and capture of reactive free radicals for safer high energy density lithium-ion battery

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第12期87卷 207-214,I0006页

作者： Mengfei Ding Xuning feng Yong Peng Jing Jing Tong Bowen Hou Yalan xing Weifeng Zhang li Wang Yu Wu Jiabin Lv Chunyan Luo Dejun Xiong Shichao Zhang Minggao Ouyang School of Materials Science and Engineering Beihang UniversityBeijing 100191China State Key Laboratory of Intelligent Green Vehicle and Mobility Tsinghua UniversityBeijing 100084China School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China School of Mechanical and Electronic control Engineering Beijing Jiaotong UniversityBeijing 100044China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Farasis Energy(GanZhou)co.Ltd GanZhou 341000JiangxiChina

As the energy density of battery increases rapidly,lithium-ion batteries(liBs)are facing serious safety issue with thermal runaway,which largely limits the large-scale applications of high-energy-density *** is generally agreed that the chemical crosstalk between the cathode and anode leads to thermal runaway of ***,a multifunctional high safety electrolyte is designed with synergistic construction of cathode electrolyte interphase and capture of reactive free radicals to limit the intrinsic pathway of thermal *** cathode electrolyte interphase not only resists the gas attack from the anode but suppresses the parasitic side reactions induced by *** the function of free radical capture has the ability of reducing heat release from thermal runaway of *** dual strategy improves the intrinsic safety of battery prominently that the triggering temperature of thermal runaway is increased by 24.4℃and the maximum temperature is reduced by 177.7℃.Simultaneously,the thermal runaway propagation in module can be ***,the electrolyte design balances the trade-off of electrochemical and safety performance of high-energy *** capacity retention of liNi_(0.8)co_(0.1)Mn_(0.1)O_(2)|graphite pouch cell has been significantly increased from 53.85%to 97.05%with higher coulombic efficiency of 99.94%at operating voltage extended up to 4.5 V for 200 ***,this work suggests a feasible strategy to mitigate the safety risk of high-energy-density liBs without sacrificing electrochemical performances.

关键词： lithium-ion battery Electrolyte Battery safety Thermal runaway

CEPC Technical Design Report

在线全文

学校读者我要写书评

暂无评论

Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang Xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen Xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-Yun Dai Xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH university of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui university HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu university Institute of ScienceVaranasi Bandirma Onyedi Eylul university Bandirma Beihang university Beijing Beijing computational Science Research Center Beijing Beijing conveyi LTD Beijing Beijing Glass Research Institute co. LtdBeijing Beijing Institute of Technology Beijing Beijing Normal university Beijing Brown university ProvidenceRI Budker Institute of Nuclear Physics Novosibirsk Cadi Ayyad university Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo university Giza Center for Theory and computation National Tsing Hua UniversityHsinchu Central China Normal university WuhanHubei Central South university ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment co. LtdChengduSichuan China academy of engineering physics MianyangSichuan China building materials academy Beijing China Center of Advanced Science and Technology Beijing China Institute of Atomic Energy Beijing China Jiliang university HangzhouZhejiang China Nuclear Instrument co. LTDBeijing China university of Geosciences Beijing China university of Geosciences WuhanHubei China university of Mining and Technology XuzhouJiangsu China West Normal university NanchongSichuan Chongqing university Department of PhysicsChongqing Chulalongkorn university Bangkok City university of Hong Kong Department of PhysicsHong Kong cockcroft Institute Daresbury cornell university IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu university DalianLiaoning Dalian university of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint Institute for Nuclear Research(DLNP JINR) Dubna East China university Of Science And Technol

The Circular Electron Positron collider(CEPC)is a large scientific project initiated and hosted by China,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a collider operating at varying energy modes(Z,W,H,and tt).The linac and Damping Ring are situated on the surface,while the subterranean Booster and collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary conceptual Design Report(Pre-CDR,2015)and the conceptual Design Report(CDR,2018),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise