nanocomposite anodes for lithium ion batteries

... and NiMoO4 formed solid solutions perfectly In general, most reports on the lithium reactivity of molybdates have been focused on their application as anode materials for lithium- ion batteries ... materials for lithium- ion batteries Nature 2000, 407:496 Taberna PL, Mitra S, Poizot P, Simon P, Tarascon JM: High rate capabilities Fe3O4-based Cu nano-architectured electrodes for lithium- ion battery ... Introduction Among the types of anode materials available for rechargeable lithium- ion batteries, graphite has been commercialized However, because of its drawbacks, such as capacity limitations...

Ngày tải lên: 20/06/2014, 21:20

... reversible extraction/insertion of lithium ions from/into the lithium planes The lithium- ion movement between the MO2 layers provides fast two-dimensional lithium- ion diffusion, and the edge-shared ... wide practical application in lithium ion batteries 1.3.1.2 Conversion-reaction-based materials The electrochemical reaction of graphite with lithium goes through an insertion process limited by ... reductionoxidation cycles [25] The structural degradation on the first discharge is complete, unlike the topotatic reaction occurring in insertion reactions Oxide anions migrate from the transition...

Ngày tải lên: 10/09/2015, 09:27

... V.7.4.1 Li -ion diffusion coefficient 220 V Summary and Conclusions 222 References 225 Chapter VI Nano- composites, SnO(VOx) as anodes for lithium ion batteries Abstract 228 VI.1 Introduction 229 ... nano-SnO(V2O3)0.25 250 VI.4.Conclusions 251 References 253 Conclusions and Suggestions for Future Work 256 x Summary Lithium ion batteries (LIBs) are the promising dc- energy source for portable electronic ... underlying reaction mechanism is the ‘conversion’ reaction of the Mo, Co and Zn particles with Li2O to form MoO2, Co3O4 and ZnO reversibly except for Y, Ho, Mn In addition, the reversible formation and...

Ngày tải lên: 11/09/2015, 10:17

... cathodes, anodes and electrolytes for LIB The concluding section describes the motivation for the present study on the anodes for LIB 1.1 Definition of Battery A battery is a device that transforms ... 154 Conclusions 156 References 158 Chapter Mixed transition metal oxides as anodes for Li -ion batteries 5.1 Abstract 162 5.2 Introduction 163 5.3 Experimental 165 5.4 Results and Discussion 166 ... publications xxiv Chapter Introduction Abstract 1.1 Definition of Battery 1.1.1 Primary Batteries 1.1.2 Secondary Batteries 1.2 Development of Li -ion Batteries 1.3 Principle of Operation 1.4...

Ngày tải lên: 16/09/2015, 08:32

... areas; hence, shorter are the Li -ion diffusion paths The reduced ion migration pathways lead to effective ion diffusion and ultimately enhance material properties/performances However, the significant ... doi:10.1186/1556-276X-7-60 Cite this article as: Gim et al.: Synthesis and characterization of integrated layered nanocomposites for lithium ion batteries Nanoscale Research Letters 2012 7:60 ... ground well before heating at 600°C for h to eliminate undesired organic materials that remained The heated powders were ground completely and then fired at 900°C for 12 h for crystallization The resultant...

Ngày tải lên: 20/06/2014, 23:20

... areas; hence, shorter are the Li -ion diffusion paths The reduced ion migration pathways lead to effective ion diffusion and ultimately enhance material properties/performances However, the significant ... doi:10.1186/1556-276X-7-60 Cite this article as: Gim et al.: Synthesis and characterization of integrated layered nanocomposites for lithium ion batteries Nanoscale Research Letters 2012 7:60 ... ground well before heating at 600°C for h to eliminate undesired organic materials that remained The heated powders were ground completely and then fired at 900°C for 12 h for crystallization The resultant...

Ngày tải lên: 21/06/2014, 17:20

... 40 ° for h; (b) addition of H3PO4 to C 2+ 3+ the (Mn , Fe ) solution under sonication, followed by more h of sonication; (c) addition of H3PO4 to the (Mn2+, Fe3+) solution under sonication for ... phase transformation) to quasi-one-phase reaction to one-phase solid-solution reaction (nonequilibrium phase transformation) The switchover from a two-phase reaction to a single-phase reaction can ... HowStuffWorks.com. 26 July 2014 The lithium- ion batteries required for EV applications or grid-scale electrical energy storage are much larger Cost, safety and durability considerations;...

Ngày tải lên: 09/09/2015, 11:07

... flexibility Lithium ion batteries now account for 63% of the worldwide sales in batteries for portable devices The global market for lithium ion batteries was projected to be more than 20 billions by ... anode material for commercial lithium ion batteries The insertion of lithium ions into carbon may be by the following equation: xLi+ + xe-1 + nC LixCn (1) The extraction of lithium ions is the reverse ... materials 2.1 Lithium Ion Batteries Lithium ion batteries are currently the most advanced rechargeable batteries used in portable devices The most noticeable advantage of lithium ion batteries is...

Ngày tải lên: 12/09/2015, 09:22

... reaching of the 10 Next generation lithium ion batteries for electrical vehicles ions to the anode surface, the effective participation of the ions to the redox reaction is governed by the physico-chemical ... Technology for Preparation of Cathodes in Li -Ion Batteries Electrochemical and Solid-State Letters, Vol 4, No 11, November 2001, pp A187-A190, ISSN 1099-0062 26 Next generation lithium ion batteries for ... Nitridation-Driven Conductive Li4Ti5O12 for Lithium Ion Batteries Journal of the American Chemical Society, Vol 130, No 45, November 2008, pp 14930-+, ISSN 0002-7863 30 Next generation lithium ion batteries...

Ngày tải lên: 27/06/2014, 01:20

... Electrochemical reaction signal identification 25 2.15 Rate performance tests 25 2.16 Cyclability at various C 26 Chapter Ni2+ doped Li4Ti5O12 for anodes of lithium- ion batteries: ... Nernst-Einstein relationship (Eq 1.10), Li+ ion conductivity is proportional to Li+ ion diffusion coefficient Thus, in this research, Li + ion diffusion coefficient is used instead of Li+ ion conductivity ... tested at 10 C for 100 cycles or 200 cycles where a step-interval for 10 C was introduced 26 Chapter Ni2+ doped Li4 Ti5 O 12 for anodes of lithium- ion batteries: structure and rate performance Li4–2xNi3xTi5–xO12...

Ngày tải lên: 09/09/2015, 11:18

... HIGH-POWER DENSITY LITHIUM- RICH CATHODE MATERIALS FOR FUTURE LITHIUM- ION BATTERIES: EXPLORING AND UNDERSTANDING MECHANISMS AND ROLE OF TRANSFORMATION SONG BOHANG (B.Sc.) A THESIS SUBMITTED FOR THE DEGREE ... be associated with spinel transformation after initial activation process involving vacancy condensation [93, 94], migration of transition metals[89, 95] and formation of spinel-domains [89, 96, ... Jahn-Teller distortion reaction M n   Mn 2 due  Mn 4 to Mn 3+ [16], Mn dissolution via side [17], and cation redistribution of Li with Mn ions resulting in phase transition which further...

Ngày tải lên: 10/09/2015, 09:28

... nano-Fe2 O3 performance as anode material for lithium ion batteries [24,25] Nanosize materials have large surface areas and high surface energy For lithium ion battery applications, the large ... sites for lithium ion intercalation/de-intercalation The improvement seen in the nanorods electrodes may be also attributed to the shorter pathways in the nanorods for lithium ion diffusion Thus, ... decomposition and the reversible conversion reaction of lithium ion intercalation to form Li2 O An anodic peak is also present at about 1.75 V, corresponding to the reversible oxidation of Fe0...

Ngày tải lên: 19/03/2014, 16:48

... IN LITHIUM- ION BATTERIES 19 20 Surface Films in Lithium- Ion Batteries ADVANCES IN LITHIUM- ION BATTERIES 21 22 Surface Films in Lithium- Ion Batteries Figure is a schematic representation of major ... Films in Lithium- Ion Batteries Ester reaction schemes ADVANCES IN LITHIUM- ION BATTERIES Scheme 4: Ether reaction patterns 25 Surface Films in Lithium- Ion Batteries 26 Scheme Surface reactions of ... Materials for LithiumIon Batteries M Wakihara, H Ikuta, and Y Uchimoto Oxide Cathodes 103 135 J.B Goodenough Liquid Electrolytes J-i Yamaki 155 Ionic Liquids for Lithium- Ion and Related Batteries...

Ngày tải lên: 16/04/2014, 11:22

... aqueous solution Chinese J Chem 2009, 27:1086 25 Lee DH, Park JG, Choi KJ, Choi HJ, Kim DW: Preparation of brookite-type TiO2/Carbon nanocomposite electrodes for application to Li ion batteries ... synthesis of hierarchical nanostructures CuO with various morphologies and their application as anodes for lithium ion batteries J Power Sources 2010, 195:313 Zhang X, Zhang D, Ni X, Song J, Zheng H: ... Nano-sized transition-metal oxides as negative-electrode materials for lithium- ion batteries Nature 2000, 407:496 Depart A, Dupont L, Poizot P, Leriche JB, Tarascon JM: A transmission electron microscopy...

Ngày tải lên: 21/06/2014, 03:20

... generation lithium ion batteries for electrical vehicles, Edited by Chong Rae Park p cm ISBN 978-953-307-058-2 V Preface During the last twenty years since the first commercialization of lithium ion ... mass Working voltage of the batteries is assumed to be 3V Performance deterioration of the carbon anodes with fast C/D rate 2.1 Performance limitation of carbon anodes for electrical vehicles The ... capacity deterioration with fast C/D rate of graphites and/or graphite based composite anodes 4 Next generation lithium ion batteries for electrical vehicles Fig Cycling performance of natural...

Ngày tải lên: 21/06/2014, 07:20

... a great potential to be used as a high-performance cost-effective separator for lithium- ion polymer batteries Fabrication of separators for lithium- ion polymer battery 2.1 General features The ... as a separator for lithium- ion polymer battery can be fabricated by dry 60 Next generation lithium ion batteries for electrical vehicles and wet processes, including the extrusion step to make ... LixNiO2 and λ-MnO2 and consequences for the safety of Li -ion cells, Solid State Ionics, Vol 69, No 3-4, (August, 1994) 265-270 54 Next generation lithium ion batteries for electrical vehicles Dedryvère,...

Ngày tải lên: 21/06/2014, 07:20

... generation lithium ion batteries for electrical vehicles NASICON Open Framework Structured Transition Metal Oxides for Lithium Batteries 93 X NASICON Open Framework Structured Transition Metal ... generation lithium ion batteries for electrical vehicles description of polyanion materials in general in general and NASICON structure type materials in particular Background 2.1 Polyanions Despite ... these materials in tailor made compositions may lead them for use as electrodes in next generation lithium- ion batteries 2.2 Types of polyanion compounds Polyanion compounds incorporate NASICON structure...

Ngày tải lên: 21/06/2014, 07:20

... generation lithium ion batteries for electrical vehicles followed an increasing trend The following section gives a detailed description of the formation nano-composites and the results obtained for ... Limitations in using polyanion materials for lithium batteries Although the polyanion materials examined in the present study exhibit reversible electrochemical lithium extraction/insertion properties ... 106 Next generation lithium ion batteries for electrical vehicles lithium batteries With a view to strengthen our findings from CV studies, we performed charge/discharge tests galvanostatically,...

Ngày tải lên: 21/06/2014, 07:20

... density Therefore, some other metal or alloy and transition-metal oxides have been explored as anodes for Li -ion batteries These transition-metal oxide anodes can be specified into insertion-type ... Reproduced with permission during Li? insertion/extraction process This pulverization disadvantage is the disgusting obstacle for practical application of Si as the anode for Li -ion batteries To overcome ... short effective diffusion distance for Li?, the cavities in hollow structured electrodes for Li -ion batteries may provide extra space for the storage of Li?, beneficial for enhancing specific capacity...

Ngày tải lên: 21/06/2014, 07:20

... 2.2.1 Primary Batteries 2.2.2 Secondary Batteries 2.2.3 Lithium- ion Battery 10 2.3 Electrolytes for LIB 15 2.4 Cathodes for LIB 17 2.5 Anodes for LIB ... desirable 2.5.2 Conversion Reaction Binary metal oxides store Li via a conversion reaction with the formation and decomposition of Li2O as shown in Eq (2.4) [74], lithiation  MO  2Li   ... performance Secondary Batteries Secondary batteries can be recharged by forcing a current in the opposite direction thereby reversing the redox reactions or any structural changes The applications...

Ngày tải lên: 08/09/2015, 18:24