Carbon nanocoatings on active materials for Li-ion batteries

Dominko, Robert; Gaberšček, Miran; Bele, Marjan; Mihailović, D.; Jamnik, J.

doi:10.1016/j.jeurceramsoc.2006.04.133

Cited by 78 publications

(47 citation statements)

References 17 publications

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“…One is poor electronic and ionic conductivity, which leads to poor rate capability. 3,4 In addition, a number of strategies have been implemented to overcome the low electrical conductivity and to further improve the power performance of Li 4 Ti 5 O 12 , including nanosized materials, [5][6][7] design of unique configurations, [8][9][10][11] carbon coating, [12][13][14] 3d-elements doping at Ti sites, [15][16][17] rare earth doping, 18 and coating with noble metal nano-particles, oxides or high conductive phase such as Ag 19 , Cu 2 O 20 and TiN phase, 3 which are expected to solve the challenge with good cyclic performance as well as to maintain a high rate performance.…”

mentioning

confidence: 99%

Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres

Lei

Wu²,

Luo

et al. 2014

J. Electrochem. Soc.

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Spinel Li 4 Ti 5 O 12 has become an alternative material to replace graphite anodes in terms of solving safety issues and improving battery life-time. Unfortunately, as Li 4 Ti 5 O 12 is an insulator, the low electrical conductivity becomes a major drawback, as it is unfavorable to higher rate capability. In addition to the low electronic conductivity, severe gassing during charge/discharge cycles is a critical but often-overlooked problem of Li 4 ExperimentalMaterials synthesis.-Anatase TiO 2 (220 nm in average particle diameter and 99.5% in purity, Hangzhou Wanjing New Material Co., Ltd) and Li 2 CO 3 (99.9% in purity, Shanghai China Lithium Industrial Co., Ltd.) were used as raw materials. The starting coarse Li 4 Ti 5 O 12 was prepared by a solid-state reaction method as described in a previous work. 26,27 The stoichiometric amounts of Li 2 CO 3 and anatase TiO 2 with molar ratio of Li: Ti = 0.82:1 were mixed with ethanol as dispersant by planetary ballmilling. The ball-milled mixture was heated in a furnace at 800• C in air for 18 h to obtain the coarse materials were first ball-milled without a carbon source and with 5 wt% pitch as a carbon source using water as a dispersant for 1.5 h, respectively. The resultant slurry was then spray dried to obtain the precursors individually. Finally, two precursors were all annealed at 650• C for 6 h in an Ar atmosphere to obtain the final materials.Characterization.-X-ray diffraction (XRD) patterns of the samples were recorded on a Rigaku diffractometer using Cu Kα irradiation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images were obtained on a Nova NanoSEM 430 and Tecnai F20.

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mentioning

confidence: 99%

Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres

Lei

Wu²,

Luo

et al. 2014

J. Electrochem. Soc.

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“…To improve electrochemical performance of electrode materials, besides coating with conductive electroactive material on the surface [123][124][125][126][127][128], doping with metals is also a good method. Metals can not only rise electronic conductivity but deflate polarization as well, therefore the stability of electrode is improved [129][130][131][132][133][134][135][136].…”

Section: Al(iii) Doped Compositesmentioning

confidence: 99%

Aluminum-based materials for advanced battery systems

Qiu

Zhao

et al. 2017

Sci. China Mater.

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There has been increasing interest in developing micro/nanostructured aluminum-based materials for sustainable, dependable and high-efficiency electrochemical energy storage. This review chiefly discusses the aluminum-based electrode materials mainly including Al2O3, AlF3, AlPO4, Al(OH)3, as well as the composites (carbons, silicons, metals and transition metal oxides) for lithium-ion batteries, the development of aluminum-ion batteries, and nickel-metal hydride alkaline secondary batteries, which summarizes the methodologies, related charge-storage mechanisms, the relationship between nanostructures and electrochemical properties found in recent years, latest research achievements and their potential applications. In addition, we raise the relevant challenges in recently developed electrode materials and put forward new ideas for further development of micro/nanostructured aluminum-based materials in advanced battery systems.

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“…Some progresses have been achieved in°e xible electrode materials based on carbon nanotubes, [1][2][3][4][5][6][7][8][9][10][11] graphene, 12,13 carbon paper, [14][15][16][17][18][19] conductive paper, [20][21][22] textile and other low-dimensional materials. 23 The°exible electrode materials are core components for fabricating°exible lithium ion battery.…”

Section: Introductionmentioning

confidence: 99%

Carbon Nanotube Paper as Anode for Flexible Lithium-Ion Battery

Sun

Liu

et al. 2016

NANO

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In this investigation, multiwalled carbon nanotube (MWCNT) paper consists of MWCNTs and cellulose was fabricated by traditional paper-making method. It was applied directly as negative electrode in°exible lithium ion battery to replace ordinary electrode which is combined with anode material and current collector. The electrochemical performances of the as-produced MWCNT paper (AMP) and carbonized MWCNT paper (CMP) were evaluated in this study. The morphology and structure of the MWCNT papers were observed by scanning electron microscopy (SEM). The electrochemical performance of the battery was operated by cell test and electrochemical impedance spectroscopy (EIS) measurement. The charging and discharging results indicated that the CMP behaves with higher capacity than AMP. And the EIS analysis showed that a lower charge transfer resistance can be obtained in the CMP. The excellent electrochemical performance veri¯es the feasibility of MWCNT papers as a promising candidate for the anode in°exible lithium ion battery.

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Carbon nanocoatings on active materials for Li-ion batteries

Cited by 78 publications

References 17 publications

Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres

Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres

Aluminum-based materials for advanced battery systems

Carbon Nanotube Paper as Anode for Flexible Lithium-Ion Battery

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Carbon nanocoatings on active materials for Li-ion batteries

Cited by 78 publications

References 17 publications

Dual Functions of Carbon in Li4Ti5O12/C Microspheres

Dual Functions of Carbon in Li4Ti5O12/C Microspheres

Aluminum-based materials for advanced battery systems

Carbon Nanotube Paper as Anode for Flexible Lithium-Ion Battery

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Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres

Dual Functions of Carbon in Li₄Ti₅O₁₂/C Microspheres