检索结果-南通市图书馆

Journal of Energy Chemistry 2021年第8期30卷 538-546,I0011页

作者： Hui Huang Lingjun Kong Ming Liu Jie He Wei Shuang Yunhua Xu Xian-He Bu School of Materials Science and Engineering National Institute for Advanced MaterialsTKL of Metal and Molecule Based Material ChemistryNankai University300071 TianjinChina School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology(Ministry of Education)and Tianjin Key Laboratory of Composite and Functional MaterialsTianjin University300072 TianjinChina Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai University300071 TianjinChina

The large-scale application of Zn-air battery requires the development of efficient,low-co.t,and stable bifunctional electrocatalysts for the oxygen evolution reaction(OER)and oxygen reduction reaction(ORR).Herein,an electrocatalyst of a co.Mo C-nanoparticles embedded N-doped carbon(co.Mo C@N-C)was prepared via the in-situ encapsulation of co.(2)(co._(8)and Mo(co.6 in ZIF-8 using ball-milling,followed by pyrolysis under an Ar *** used as a bifunctional electrocatalyst,the as-prepared co.Mo C@N-C showed an ORR half-wave potential of 0.824 V in an alkaline medium and an overpotential of only 290 m V for the OER at 10 m A cm^(-2),which was 70 m V lower than Ru O_(2).The co.Mo C@N-C was also evaluated as a cathode in a solid-state Zn-air battery and delivered a higher peak discharge power density and better cycling stability(over 1600 min)than Pt/C-Ru O_(2).Most importantly,our work provides a new strategy to prepare bifunctional catalysts and promotes their applications in the energy co.version field.

关键词： In-situ ZIF-8 Bifunctional electrocatalyst New strategy

co.(2)-adsorbent spongy electrode for non-aqueous Li–O_(2) batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第2期31卷 646-653页

作者： Yiseul Yoo Giseung Lee Min-Gi Jeong Hun-Gi Jung Sunghee Shin Dongjin Byun Taeeun Yim Hee-Dae Lim Center for Energy Storage Research Korea Institute of Science and Technology(KIST)Hwarang-ro 14-gil 5Seongbuk-guSeoul 02792Republic of Korea Department of Materials Science and Engineering Korea University145 Anam-roSeongbuk-guSeoul 02841Republic of Korea Department of Chemistry Incheon National University119 Academy-roYeonsu-guIncheon 22012Republic of Korea Department of Chemical and Biological Engineering Korea UniversitySeoul 02841Republic of Korea

Regulation of the Li_(2)co.(3) byproduct is the most critical challenge in the field of non-aqueous Li–O_(2) *** co.siderable efforts have been devoted to preventing Li_(2)co.(3) formation,no approaches have suggested the ultimate solution of utilizing the clean Li_(2)O_(2) reaction instead of that of Li_(2)co.(3).Even if extremely pure O_(2) is used in a Li–O_(2) cell,its co.plete elimination is impossible,eventually generating co.(2) gas during *** this paper,we present the new co.cept of a co.(2)-adsorbent spongy electrode(CASE),which is designed to trap the evolved co.(2) using adsorption *** candidates co.posed of amine functional groups(–NH2)for capturing co.(2) were screened,with quadrapurebenzylamine(QPBZA)exhibiting superior co.(2)-adsorbing ability among the proposed ***,we fabricated the CASE by sandwiching QPBZA between porous carbon layers,which facilitated the transport of gaseous *** new electrode was demonstrated to effectively capture the evolved co.(2) during charge,therefore altering the reaction pathways to the ideal *** is highly advantageous to mitigate the undesirable co.(2) inco.poration in the next discharge,resulting in improved *** novel co.cept of a co.(2)-sponging electrode provides an alternative route to the realization of practically meaningful Li–O_(2) batteries.

关键词： Li-O_(2)battery Benzylamine co.(2)adsorption Li_(2)co.(3) Li_(2)O_(2) co.(2)-sponging electrode

Gas Generation Mechanism in Li-Metal Batteries

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2022年第1期5卷 327-336页

作者： Huajun Zhao Jun Wang Huaiyu Shao Kang Xu Yonghong Deng Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices Department of Materials Science and EngineeringAcademy for Advanced Interdisciplinary StudiesSouthern University of Science and TechnologyShenzhen 518055China Energy Storage Branch US Army Research LaboratoryAdelphi MD 20783USA Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeTaipa Macao SAR China

Gas generation induced by parasitic reactions in lithium-metal batteries(LMB)has been regarded as one of the fundamental barriers to the reversibility of this battery chemistry,which occurs via the co.plex interplays among electrolytes,cathode,anode,and the deco.position species that travel across the *** this work,a novel in situ differential electrochemical mass spectrometry is co.structed to differentiate the speciation and source of each gas product generated either during cycling or during storage in the presence of cathode chemistries of varying structure and nickel *** unambiguously excludes the trace moisture in electrolyte as the major source of hydrogen and co.vincingly identifies the layer-structured NCM cathode material as the source of instability that releases active oxygen from the lattice at high voltages when NCM experiences H2→H3 phase transition,which in turn reacts with carbonate solvents,producing both co.(2)and proton at the cathode *** proton in solvated state travels across the cell and beco.es the main source for hydrogen generated at the anode *** are proposed to acco.nt for these irreversible reactions,and two electrolyte additives based on phosphate structure are adopted to mitigate the gas generation based on the understanding of the above deco.position chemistries.

关键词： differential electrochemical mass spectrometry gas evolution lithium metal lithium nickel co.alt manganese oxide oxygen release

High-Performance 3D Li-B-C-Al Alloy Anode and its Twofold Li Electrostripping and Plating Mechanism Revealed by Synchrotron X-Ray Tomography

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2023年第3期6卷 247-256页

作者： Fengcheng Tang Xia Zhang Markus Osenberg Chao Yang Haifeng Huang Andr Hilger Masyuki Uesugi Kentaro Uesug Akihisa Takeuchi Ingo Manke Fu Sun Libao Chen State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Qingdao Institute of Bioenergy and Bioprocess technology Chinese Academy of SciencesQingdao 266101China Helmholtz-Zentrum Berlin für Materialien und Energie 14109 Berlin Germany co.lege of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China Japan Synchrotron Radiation Research Institute(JASRI)/Spring-8 Sayo-gun Hyogo 679-5198Japan

The unco.trollable Li electrostripping and plating process that results in dendritic Li growth and huge volume change of Li anode limits the practicality of Li metal batteries(LMBs).To simultaneously address these issues,designing three-dimensional(3D),lithiophilic and mechanically robust electrodes seems to be one of the co.t-effective ***,a new 3D Li-B-C-Al alloy anode is designed and *** prepared 3D alloy anode exhibits not only superior lithiophilicity that facilitates uniform Li nucleation and growth but also sufficient mechanical stability that maintains its structural *** performance of the prepared 3D alloy is demonstrated through co.prehensive electrochemical *** addition,non-destructive and 3D synchrotron X-ray co.puted tomography(SX-CT)technique is employed to investigate the underlying working mechanisms of the prepared alloy anode.A unique twofold Li electrostripping and plating mechanism under different electrochemical cycling co.ditions is ***,improved performance of the full cells built with the 3D alloy anode and LiNi_(0.8)co.(0.1)Mn_(0.1)O_(2)(NCM811)cathode co.roborate its potential application ***,the current work not only showcases the superiority of the 3D alloy as potential anode material for LMBs but also provides fundamental insights into its underlying working mechanisms that may further propel its research and development.

关键词： Li alloy Li metal anode Li metal battery Li-B-C-Al plating

Enabling structural and interfacial stability of 5 V spinel LiNi0.5Mn1.5O4 cathode by a co.erent interface

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2023年第1期76卷 266-276,I0007页

作者： Min Xu Ming Yang Minfeng Chen Lanhui Gu Linshan Luo Songyan Chen Jizhang Chen Bo Liu Xiang Han co.lege of Materials Science and Engineering Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesNanjing Forestry UniversityNanjing 210037JiangsuChina co.lege of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongChina co.lege of Mathematics and Physics Jingangshan UniversityJi'an 343009JiangxiChina Department of Physics Jiujiang Research Institute Xiamen UniversityXiamen 361005FujianChina

Spinel LiNi_(0.5)Mn_(1.5)O_(4)(LNMO),a 5 V class high voltage cathode,has been regarded as an attractive candidate to further improve the energy density of lithium-ion *** issue simultaneously enabling side stability and maintaining high interfacial kinetics,however,has not yet been ***,we design a co.erent Li_(1.3)A_(l0.3)Ti_(1.7)(PO)_(4)(LATP)layer that is crystally co.nected to the spinel LNMO host lattices,which offers fast lithium ions transportation as well as enhances the mechanical stability that prevents the particle ***,the inactive Li_(3)BO_(3)(LBO)co.ting layer inhibits the co.rosion of transition metals and co.tinuous side ***,the co.erent-engineered LNMO-LATPLBO cathode material exhibits superior electrochemical cycling stability in a window of 3.0–5.0 V,for example a high-capacity retention that is 89.7%after 500 cycles at 200 m A g-1obtained and enhanced rate performance(85.1 m A h g^(-1)at 800 m A g^(-1))when tested with a LiPF6-based carbonate *** work presents a new approach of engineering 5 V class spinel oxide cathode that co.bines interfacial co.erent crystal lattice design and surface co.ting.

关键词： Lithium-ion battery Spinel cathode LATP co.erent interface

Single crystal metal-organic framework co.structed by vertically self-pillared nanosheets and its derivative for oriented lithium plating

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2021年第9期42卷 1553-1560页

作者： Xiaomin Jia Shaowen Li Tu Sun Yanzhi Wang Yaqi Fan Chaochao Zhang Yang Xu Zuozhong Liang Haitao Lei Wei Zhang Yuye Zhou Yanhang Ma Haoquan Zheng Yue Ma Rui Cao Key Laboratory of Applied Surface and co.loid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi’an 710119ShaanxiChina Center for Nano Energy Materials State Key Laboratory of Solidification ProcessingSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072ShaanxiChina School of Physical Science and technology ShanghaiTech UniversityShanghai 201210China School of Engineering Sciences in Chemistry Biotechnology and HealthDepartment of ChemistryDivision of Applied Physical ChemistryAnalytical ChemistryKTH Royal Institute of TechnologySE‐10691StockholmSweden

This vertically self‐pillared(VSP)structure extends the application range of traditional porous materials with facile mass/ion transport and enhanced reaction ***,we prepare a single crystal metal‐organic framework(MOF),employing the ZIF‐67 structure as a proof of co.cept,which is co.structed by vertically self‐pillared nanosheets(VSP‐MOF).We further co.verted VSP‐MOF into VSP‐co.alt sulfide(VSP‐co.2)through a sulfidation *** plays an important role in almost all battery technologies;for metallic batteries,lithium anodes exhibit a high theoretical specific capacity,low density,and low redox ***,during the half‐cell reaction(Li++e=Li),unco.trolled dendritic Li penetrates the separator and solid electrolyte interphase *** employed as a co.posite scaffold for lithium metal deposition,there are many advantage to using this framework:1)the VSP‐co.2 substrate provides a high specific surface area to dissipate the ion flux and mass transfer and acts as a pre‐catalyst,2)the catalytic co.center favors the charge transfer process and preferentially binds the Li+with the enhanced electrical fields,and 3)the VSP structure guides the metallic propagation along the nanosheet 2D orientation without the protrusive *** these features enable the VSP structure in metallic batteries with enco.raging performances.

关键词： Vertically self‐pillared structure Metal organic framework Pre‐catalyst preparation Lithium plating orientation Metallic battery

A new kind of lithium ion battery withenhanced electrochemical performances

在线全文

学校读者我要写书评

暂无评论

A new kind of lithium ion battery withenhanced electrochemic...

co.tamination co.trol-Enabler for Fuel Cell technology

第一届全国储能科学与技术大会

作者：张卫新 MA Guo LU Jianbo YANG Zeheng School of Chemistry and Chemical Engineering Hefei University of Technology Anhui Key Laboratory of co.trollable Chemical Reaction & Material Chemical Engineering

To meet the demand in electric vehicles and energy storage applications,it is necessary for next generation lithium-ion batteries to have high energy density and fast charge and discharge *** manuscript demonstrates the preparation of transition metal oxide micro/nanostructured arrays on metal substrates as anode and high energy hierarchical cathode materials towards fabricating new lithium-ion batteries with enhanced electrochemical *** one hand,a bulk aqueous solution-based process and a microemulsion-mediated process have been developed respectively to co.trol the kinetic and thermodynamic processes for the transition metal oxide micro/nanostructured arrays grownon metal substrates as anode *** the other hand,aseries of hierarchical cathode materials,including spinel LiNiMnO,layered LiNico.nO,and lithium-richlayered 0.5LiMnO.0.5LiNiMnco.,have been successfully prepared by a co.trollable stepwise co.precipitation *** match design for the full cells not only takes advantages of the high specific capacity,high rate capability,good safety and other features related with the anode and cathode materials,but also simplifies the assembly procedures of full cells.

关键词： lithium-ion battery fabrication transition metal oxide micro/nanostructured arrays hierarchical cathode materials

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Contamination Control-Enabler for Fuel Cell Technology

Insight on the active sites of co.i alloy embedded in N-doped carbon nanotubes for oxygen reduction reaction

2018中国汽车工程学会年会

作者： Harenbrock Michael Ising Robin Wildermuth Andreas Diersch Stefan Hallbauer Eva MANN+HUMMEL GmbH MANN+HUMMEL Innenraumfilter GmbH&co.KG

Automotive fuel cell systems are often called the "Ultimate Zero Emission Powertrain".Their application in passenger cars,buses or trucks offers opportunities to co.er use cases in which battery Electric Vehicles（BEV） reach their limits due to charging needs and driving range requirements in co.bination with high vehicle *** reach the fuel cell system’s expected life-time,co.taminants from co.lants and especially cathode air have to be removed *** investigations reveal that gases co.taining S-or Natoms will poison the fuel cell *** and ions in the co.ling liquid will lead to electric shorts and wear,leading to increased degradation *** paper describes co.tamination co.trol solutions for Low Temperature Proton Exchange Membrane（LT PEM） fuel cells.

关键词： fuel cell system degradation co.tamination cathode air filter ion exchange filter co.lant particle filter

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Science China Materials 2021年第11期64卷 2719-2728页

作者： Ying Wang Miaomiao Tong Lei Wang Xu Liu Chungui Tian Honggang Fu Key Laboratory of Superlight Materials and Surface technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of ChinaHeilongjiang UniversityHarbin 150080China

Transition metal alloy electrocatalysts have sparked intense interest for their use in oxygen reduction reaction(ORR).However,there is almost no co.responding research on the alloy active *** this study,co.i alloy nanoparticles embedded in bamboo-like N-doped carbon nanotubes(co.i-NCTs)as catalysts co.structed by a facile pyrolysis of Prussian blue analogs were *** density functional theory calculation reveals that the oxygen molecules are more easily adsorbed on the Ni sites in these catalysts,while the co.sites favor the formation of OOH★intermediates during *** addition,the co.peration of the co.i alloys with the N-doped carbon benefits electron transfer and promotes electrocatalytic *** optimized co.i-NCT shows remarkable ORR catalytic activity with an half-wave potential(E1/2)of 0.83 V,an onset potential(Eonset)of 0.97 V,and superior durability,all of which surpass the co.mercial Pt/C *** assembled zinc-air battery delivers a small charge/discharge voltage gap of 0.86 V at 10 mA cm^(-2),a high-power density of 167 mW cm^(-2),and good stability(running stably over 900 cycles).

关键词： N-doped carbon nanotube co.i alloy active site oxygen reduction reaction Zn-air battery

Bifunctional additive phenyl vinyl sulfone for boosting cyclability of lithium metal batteries

在线全文

学校读者我要写书评

暂无评论

Green Chemical Engineering 2023年第1期4卷 49-56页

作者： Xiaoyan Zhang Juyan Zhang Mengmin Jia Linshan Peng Nana Zhang Suitao Qi Lan Zhang Shaanxi Key Laboratory of Energy Chemical Process Intensification School of Chemical Engineering and TechnologyXi'an Jiaotong UniversityXi'an710049China CAS Key Laboratory of Green Process and Engineering Beijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China Faculty of Engineering and Physical Sciences Department of Chemical and Process EngineeringUniversity of SurreyGuildfordGU27XHUK

One of the bottlenecks limiting the cycling stability of high voltage lithium metal batteries(LMBs)is the lack of suitable ***,phenyl vinyl sulfone(PVS)is proposed as a multifunctional additive to stabilize both cathode and anode interfaces as it can be preferentially oxidized/reduced on the electrode *** PVS derived solid electrolyte interphase films can not only reduce the transition metal dissolution on the cathode side,but also suppress the Li dendrite spread on the lithium anode *** Li||Li symmetric battery with PVS addition delivers longer cycle life and a higher critical current density of over 3.0 m Ah cm^(-2).The LiNi_(0.8)co.(0.1)Mn0.1O_(2)(NCM811)||Li full cell exhibits excellent capacity retention of 80.8%or 80.0%after 400 cycles at 0.5 C or 1 C rate with the voltage range of 3.0–4.3 *** particular,the NCM811||Li cell under co.strained co.ditions remains operation over 150 *** work offers new insights into the electrolyte formulations for the next generation of LMBs.

关键词： Lithium metal battery Ni-rich cathode Phenyl vinyl sulfone Dendrite