Flame co-synthesis of LiMn2O4 and carbon nanocomposites for high power batteries

Patey, Timothy J.; Büchel, Robert; Ng, See How; Krumeich, Frank; Pratsinis, Sotiris E.; Novák, Petr

doi:10.1016/j.jpowsour.2008.10.002

Cited by 64 publications

(49 citation statements)

References 24 publications

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“…4 shows examples of particles produced by flame spray pyrolysis: a) mixed-oxide crystal structure, b) polycrystalline particles with two components forming individual phases within a particle, c) surface layer of one component coating the other, d) small clusters supported on the surface of the other components and e) an external mixture of separated individual particles of different components. They applied these particles to catalyst, metal-ceramic nanoparticles [95], dental materials [96], batteries [93], and phosphors [92]. Table 9 is a summary of research by Pratsinis' group.…”

Section: Spray Pyrolysis Research In Europe and Indiamentioning

confidence: 99%

“…The same preparation method was applied to the preparation of dense and spherical LiNi 0.8 Co 0.15 Mn 0.05 O 2 cathode powders, and they reported 215 mAh/g of discharge capacity at constant current density of 0.5C [80]. Combination of diffusion flame and flame spray was applied to the preparation of LiMn 2 O 4 /carbon nano-composite [93]. Fig.…”

Section: -1 Electrodes For Li-ion Batteriesmentioning

confidence: 99%

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Design of particles by spray pyrolysis and recent progress in its application

Jung

Park

Kang

2010

Korean J. Chem. Eng.

144

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Spray pyrolysis is a promising aerosol process to produce "designer particles" of precisely controlled morphology with decorations on surfaces or inside particles. Need of precise control of properties has sparked researches on aerosol process that may replace conventional processes such as solid state reaction process or liquid precipitation method. However, productivity is the biggest obstacle in the development of a commercial scale process because the aerosol process is essentially operated at low particle concentration compared to liquid phase processes. In this review, by reviewing publications for the last 10 years we discuss how researchers on spray pyrolysis circumvent this inherent limitation of the aerosol process. First, the process of particle design by spray pyrolysis is introduced. Some key criteria are explained for selecting each component of spray pyrolysis: precursor, additive, carrier gas, heat source, and reactor type. Second, key contributions of major groups in Korea, Japan, Europe, and America are described. Third, some of named processes to overcome productivity of spray aerosol process are introduced. Fourth, applications of spray pyrolysis to materials related to alternative energy, environmental cleaning, information processing and display, and biomaterials are considered. Finally, future prospects of spray pyrolysis are discussed along with current standing issues for further progress of spray pyrolysis.

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Section: Spray Pyrolysis Research In Europe and Indiamentioning

confidence: 99%

Section: -1 Electrodes For Li-ion Batteriesmentioning

confidence: 99%

Design of particles by spray pyrolysis and recent progress in its application

Jung

Park

Kang

2010

Korean J. Chem. Eng.

144

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“…hydrocarbons can modify the cubic spinel-type atomic arrangement of lithium manganate, and that the carbon coating can improve the electrode performance of spinel lithium manganate because of the increase of grain connectivity and/or the protection of manganese oxide from chemical corrosion. Patey et al [42] reported that LMO/carbon nanocomposites had a considerably higher specific galvanostatic discharge capacity at a 5-C rate or greater than the electrode with powder of pure LMO, and the specific energy of a thin-layer lithium-ion battery containing the flame-made LMO/carbon nanocomposite as positive electrode and LiC 6 as negative electrode (78 Wh kg −1 at 50-C rate).…”

Section: Carbon Materialsmentioning

confidence: 99%

A review of recent developments in the surface modification of LiMn2O4 as cathode material of power lithium-ion battery

Zhu

et al. 2009

Ionics

161

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LiMn 2 O 4 (LMO) is a very attractive choice as cathode material for power lithium-ion batteries due to its economical and environmental advantages. However, LiMn 2 O 4 in the 4-V region suffers from a poor cycling behavior. Recent research results confirm that modification by coating is an important method to achieve improved electrochemical performance of LMO, and the latest progress was reviewed in the paper. The surface treatment of LMO by coating oxides and nonoxide systems could decrease the surface area to retard the side reactions between the electrode and electrolyte and to further diminish the Mn dissolution during cycling test. At present, LiMn 2 O 4 is the mainstreaming cathode material of power lithium-ion battery, and, especially the modified LMO, is the trend of development of power lithium-ion battery cathode material in the long term.

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“…Although increasing rate capabilities were successfully achieved, it is well known that the electrochemical properties of the electrode materials do not play the only key role, the electrode and current collector interface architecture [18,19] are key as well. State of the art LIB electrodes are produced by mixing electrochemical active powders with polymer binders and conductive agents such as carbon black [20,21], carbon nanotubes [22,23], or graphene [24,25].…”

Section: Introductionmentioning

confidence: 99%

“…conductive agents such as carbon black [20,21], carbon nanotubes [22,23], or graphene [24,25]. The resulting slurries are coated onto Cu/Al current collectors as a ~100 µm thick film.…”

Section: Introductionmentioning

confidence: 99%

Nanostructured Networks for Energy Storage: Vertically Aligned Carbon Nanotubes (VACNT) as Current Collectors for High-Power Li4Ti5O12(LTO)//LiMn2O4(LMO) Lithium-Ion Batteries

et al. 2017

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Abstract:As a concept for electrode architecture in high power lithium ion batteries, self-supported nanoarrays enable ultra-high power densities as a result of their open pore geometry, which results in short and direct Li + -ion and electron pathways. Vertically aligned carbon nanotubes (VACNT) on metallic current collectors with low interface resistance are used as current collectors for the chemical solution infiltration of electroactive oxides to produce vertically aligned carbon nanotubes decorated with in situ grown LiMn 2 O 4 (LMO) and Li 4 Ti 5 O 12 (LTO) nanoparticles. The production processes steps (catalyst coating, VACNT chemical vapor deposition (CVD), infiltration, and thermal transformation) are all scalable, continuous, and suitable for niche market production to achieve high oxide loadings up to 70 wt %. Due to their unique transport structure, as-prepared nanoarrays achieve remarkably high power densities up to 2.58 kW kg −1 , which is based on the total electrode mass at 80 C for LiMn 2 O 4 //Li 4 Ti 5 O 12 full cells. The tailoring of LTO and LMO nanoparticle size (~20-100 nm) and VACNT length (array height: 60-200 µm) gives insights into the rate-limiting steps at high current for these kinds of nanoarray electrodes at very high C-rates of up to 200 C. The results reveal the critical structural parameters for achieving high power densities in VACNT nanoarray full cells.

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Flame co-synthesis of LiMn2O4 and carbon nanocomposites for high power batteries

Cited by 64 publications

References 24 publications

Design of particles by spray pyrolysis and recent progress in its application

Design of particles by spray pyrolysis and recent progress in its application

A review of recent developments in the surface modification of LiMn2O4 as cathode material of power lithium-ion battery

Nanostructured Networks for Energy Storage: Vertically Aligned Carbon Nanotubes (VACNT) as Current Collectors for High-Power Li4Ti5O12(LTO)//LiMn2O4(LMO) Lithium-Ion Batteries

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