检索结果-南通市图书馆

E-fuel system: a conceptual breakthrough for energy storage

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2019年第4期64卷 227-228页

作者： khalil amine Chemical Sciences and Engineering Division Argonne National Laboratory

The demand for renewables such as solar and wind power has become stronger than ever in the past few decades and their numerous advantages have nearly risen to the status of common knowledge. However, as solar and wind power are intermittent in nature, the electricity generated from these renewable sources only comprise a low fraction of global electricity production. Enabling the widespread use of renewables requires energy storage technology that is site-independent, efficient, scalable, stable, cost-effective, safe, energy dense and continuous in operation. To date, none of the existing technologies have adequately met the attributes necessary for storing intermittent and scattered solar, wind and other sources of renewable energy. Pumped hydro and compressed air are scalable and cost-effective, but are limited by geography and geology [1].

关键词： demand technologies attributes

维普期刊数据库

An energy-degree evaluation metric for clustering purposes in mobile ad hoc networks

在线全文

学校读者我要写书评

暂无评论

International Journal of Modeling, Simulation, and Scientific Computing 2019年第2期10卷 114-132页

作者： khalil amine MOAD6 Research Team MASI LaboratoryE3S Research Centre Mohammadia School of Engineering Mohammed V University of RabatMorocco

Network clustering is the process of partitioning a network into a number of virtual entities mastered by certain nodes,called cluster centers that are responsible for collecting and maintaining topology information and managing the routing processes.In ad hoc networking,clustering has been introduced to deal with the dynamic topology by providing a temporarily stable network core.Clustering process mainly depends on the metric upon which the selection of cluster centers is performed.A wide range of clustering metrics were introduced in the literature based on network issues including mobility and connectivity degree,giving rise to a variety of clustering schemes.Although clustering provides energy consumption reduction,residual energy has not received enough attention and few studies have addressed the clustering on the basis of this feature.This paper discusses the current clustering metrics and proposes an energy-degree evaluation metric with mobility consideration taking into account the nodes residual energy and the network connectivity as two main keys of clustering.

关键词： Ad hoc networks clustering dominating set energy aware mobility

Mass and charge transport relevant to the formation of toroidal lithium peroxide nanoparticles in an aprotic lithium-oxygen battery： An experimental and theoretical modeling study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2017年第12期10卷 4327-4336页

作者： Xiangyi Luo Rachid amine Kah Chun Lau Jun Lu Chun Zhan Larry A. Curtiss Said AI Hallaj Brian P. Chaplin khalil amine Chemical Sciences and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA Materials Science Division Argonne National Laboratory 9700 South Cass Avenue Lemont IL 60439 USA Department of Chemical Engineering University of Illinois at Chicago 810 S. Clinton Chicago IL 60607 USA Department of Physics and Astronomy California State University Northridge 18111 Nordhoff Street Northridge CA 91330 USA

The discharge and charge mechanisms of rechargeable Li-O2 batteries have been the subject of extensive investigation recently. However, they are not fully understood yet. Here we report a systematic study of the morphological transition of Li2O2 from a single crystalline structure to a toroid like particle during the discharge-charge cycle, with the help of a theoretical model to explain the evolution of the Li2O2 at different stages of this process. The model suggests that the transition starts in the first monolayer of Li2O2, and is subsequently followed by a transition from particle growth to film growth if the applied current exceeds the exchange current for the oxygen reduction reaction in a Li-O2 cell. Furthermore, a sustainable mass transport of the diffusive active species （e.g., O2 and Li＋） and evolution of the underlying interfaces are critical to dictate desirable oxygen reduction （discharge） and evolution （charge） reactions in the oorous carbon electrode of a Li-O2 cell.

关键词： rechargeable Li-O2 battery,electrocatalyst,nanocomposite,lithium peroxide

A Facile Recovery Process for Cathodes from Spent Lithium Iron Phosphate Batteries by Using Oxalic Acid

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2018年第2期4卷 219-225页

作者： Li Li Jun Lu Longyu Zhai Xiaoxiao Zhang Larry Curtiss Yi Jin Feng Wu Renjie Chen khalil amine School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Chemical Sciences and Engineering Division Argonne National LaboratoryIL 60439USA Material Science Division Argonne National LaboratoryIL 60439USA State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems China Electric Power Research Institute.Beijing 100192China

A simplistic and novel leaching process is developed to dispose spent lithium iron phosphate(LiFePO_(4))batteries.In this paper,oxalic acid is selected as a leaching reagent to recover lithium as a resource and remove phosphorus from LiFePO_(4) batteries,benefiting from its low natural effects.The physical properties of spent cathode materials(before leaching)and residues(after leaching)are identified by X-ray diffraction(XRD)and scanning electronic microscopy(SEM)with energy dispersive X-ray spectroscopy(EDS).The total amounts of Li and Fe are analyzed by inductively coupled plasma-atomic emission spectroscopy(ICP-AES).The process occurs under conditions of a 0.3 mol·L^(-1) oxalic acid concentration,a temperature of 80℃,a reaction time of 60 min and a solid/liquid ratio of 60 g·L^(-1).It can effectively precipitate92%ferrum in terms of FeC_(2)O_(4)·2H_(2)O from LiFePO4,with the leaching efficiency of Li achieving up to 98%.This method demonstrates a new strategy for dealing with spent lithium iron phosphate batteries with a low cost and low environmental impact.

关键词： Leaching oxalic acid precipitation spent lithium-ion batteries

Uniformly dispersed FeOx atomic clusters by pulsed arc plasma deposition： An efficient electrocatalyst for improving the performance of Li-O2 battery

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2016年第7期9卷 1913-1920页

作者： Xiangyi Luo Jun Lu Evan Sohm Lu Ma Tianpin Wu Jianguo Wen Dantong Qiu YunKai Xu Yang Ren Dean J. Miller khalil amine Material Sciences Division Argonne National Laboratory Argonne IL 60439 USA Chemical Sciences and Engineering Division Argonne National Laboratory Argonne IL 60439 USA ULVAC Technologies Inc. Methuen MA 01844 USA Center for N anoscale Materials Nanoscience and Technology Argonne National Laboratory Argonne IL 60439 USA Advanced Photon Source Argonne National Laboratory Argonne IL 60439 USA Center for Nanoscale Materials Nanoscience and Technology Argonne Notional Laboratory Argonne IL 60439 USA

The present study explored a new method to improve the catalytic activity of non-precious metals, especially in electrochemical reactions. Highly ionized Fe plasma produced by arc discharge was uniformly deposited on a porous carbon substrate and formed atomic clusters on the carbon surface. The as-prepared FeO~/C material was tested as a cathode material in a rechargeable Li-02 battery under different current rates. The results showed significant improvement in battery performance in terms of both cycle life and reaction rate. Furthermore, X-ray diffraction （XRD） and scanning electron microscopy （SEM） results showed that the as-prepared cathode material stabilized the cathode and reduced side reactions and that the current rate was a critical factor in the nucleation of the discharge products.

关键词： Li-O2 battery,FeOx atomic cluster,electrocatalyst,pulsed arc plasmadeposition （APD）

Energy-driven surface evolution in beta-MnO2 structures

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2018年第1期11卷 206-215页

作者： Wentao Yao Yifei Yuan Hasti Asayesh-Ardakani Zhennan Huang Fei Long Craig R. Friedrich1 khalil amine Jun Lu Reza Shahbazian-Yassar1 Department of Mechanical Engineering-Engineering Mechanics Michigan Technological University Houghton Michigan 49931 USA Chemical Science and Engineering Division Argonne National Laboratory 9700 South Cass Avenue Argonne Illinois 60439 USA Department of Mechanical and Industrial Engineering The University of Illinois at Chicago Chicago Illinois 60607 USA

Exposed crystal facets directly affect the electrochemical/catalytic performance of MnO2 materials during their applications in supercapacitors, rechargeable batteries, and fuel cells. Currently, the facet-controlled synthesis of MnO2 is facing serious challenges due to the lack of an in-depth understanding of their surface evolution mechanisms. Here, combining aberration-corrected scanning transmission electron microscopy （STEM） and high-resolution TEM, we revealed a mutual energy-driven mechanism between beta-MnO2 nanowires and microstructures that dominated the evolution of the lateral facets in both structures. The evolution of the lateral surfaces followed the elimination of the {100} facets and increased the occupancy of {110} facets with the increase in hydrothermal retention time. Both self-growth and oriented attachment along their {100} facets were observed as two different ways to reduce the surface energies of the beta-MnO2 structures. High-density screw dislocations with the 1/2〈100〉 Burgers vector were generated consequently. The observed surface evolution phenomenon offers guidance for the facet-controlled growth of beta- MnO2 materials with high performances for its application in metal-air batteries, fuel cells, supercapacitors, etc.

关键词： manganese oxide,facet evolution,oriented attachment,growth mechanism,surface energy

Nature Nanotechnology最新综述:纳米技术在电动车动力电池材料发展中的应用

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

储能科学与技术 2017年第1期6卷 51-51,68,100,107页

作者： Jun Lu Zonghai Chen Zifeng Ma Feng Pan Larry A. Curtiss khalil amine Chemical Sciences and Engineering Division Argonne National Laboratory Argonne USA Department of Chemical Engineering Institute of Electrochemical and Energy Technology Shanghai Jiao Tong University China School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen PR China Material Science Division Argonne National Laboratory Argonne USA

电池是一种电化学储能器件，在充电时，正负极之间将获得的电能转化为化学能存储，在有需要时，又将化学能转化为电能释放出来。理想的电池应具有高比能量，高功率密度，长循环寿命，良好的稳定性并且价格低廉。从1991年开始锂离子电池... 详细信息

电池是一种电化学储能器件，在充电时，正负极之间将获得的电能转化为化学能存储，在有需要时，又将化学能转化为电能释放出来。理想的电池应具有高比能量，高功率密度，长循环寿命，良好的稳定性并且价格低廉。从1991年开始锂离子电池的发展十分引人注目，因为其性能十分优异：循环寿命长，能量密度高，功率密度高，

关键词：动力电池材料发展纳米技术电动车高功率密度应用综述电能转化

维普期刊数据库

Critical Operation Strategies Toward High-Performance Lithium Metal Batteries

在线全文

学校读者我要写书评

暂无评论

Renewables 2023年第2期1卷 114-141页

作者： Lanting Qian Tyler Or Yun Zheng Matthew Li Dana Karim Andy Cui Moin Ahmed HeyWoong Park Zhen Zhang Yaping Deng Aiping Yu Zhongwei Chen khalil amine Department of Chemical Engineering Waterloo Institute for NanotechnologyUniversity of WaterlooWaterlooOntario N2L 3G1 Chemical Sciences and Engineering Division Argonne National LaboratoryLemontIllinois 60439 Hinsdale Central High School HindsaleIllinois 50521 Henry Gunn High School Palo AltoCalifornia 94306

Commercial lithium(Li)-ion batteries(LIBs)are approaching their theoretical limits in energy density.As a result,Li metal batteries(LMBs)with either liquid or solid-state electrolytes have been proposed as a next-generation alternative,although they currently pose major safety and stability issues.To resolve these issues,most research has focused on the development and production of novelmaterials and coatings.Although promising performance benchmarks have been achieved,these strategiesmay generate issues for large-scale production,due to the added costs associated with using novel materials and developing the required cell fabrication process and infrastructure.Optimizing external conditions,such as selecting specific cell cycling protocols,testing the cell or synthesizing materials at specific temperatures,testing or fabricating the cell under specific mechanical pressures,etc.,are often overlooked as a means of directly improving battery performance without requiring complex material modifications.In this review,we will discuss how these external parameters can address the key failure mechanisms and challenges in LMBs that use either liquid or solid electrolytes.Similarities and differences in mechanisms(Li+transport,Li dendrite propagation,thermal effects,etc.)observed in liquid and solid-state configurations will also be discussed.Finally,we propose the outstanding scientific and economic gaps in LMBs,thereby providing future directions to explore.

关键词： energy storage lithium metal batteries solidstate batteries temperature protocols pressure

Prospect and Reality of Concentration Gradient Cathode of Lithium-ion Batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2020年第1期39卷 11-15,1页

作者： LIU Tong-Chao PAN Feng amine khalil Chemical Sciences and Engineering Division Argonne National LaboratoryArgonneIL 60439USA School of Advanced Materials Peking UniversityShenzhen Graduate SchoolShenzhen 518055China Material Science and Engineering Stanford UniversityStanfordCA 94305USA

Li[NixMnyCoz]O2 cathodes are currently the most practicable materials in the timing of developing high-performance rechargeable batteries for next-generation technologies.With the ever-growing demand for energy density,a significant breakthrough has been achieved by the controllable concentration design forming core-shell and concentration gradient structures to push Li[NixCoyMnz]O2 toward higher energy density,longer lifetime and safety.Herein,we review the recent progress on advanced concentration gradient cathode materials.Furthermore,we prospect that this novel approach will continuously extend its advantages in developing extremely fast charging and Co-free cathode materials in the near future.

关键词： lithium-ion batteries Li[NixMnyCoz]O2 core-shell structure concentration gradient structure

维普期刊数据库