Synthesis and characterization of LiMn2O4 for use in Li-ion batteries

Siapkas, D.; Mitsas, C.L.; Samaras, I.; Zorba, T.; Moumouzias, George; Terzidis, D.; Hatzikraniotis, E.; Kokkou, S. C.; Voulgaropoulos, Anastasios; Paraskevopoulos, K.

doi:10.1016/s0378-7753(97)02809-7

Cited by 19 publications

(9 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This rate capability is higher than the rate capability for the spinel LiMn 2 O 4 prepared by a conventional solid-state reaction, as shown in Fig. 5(b), as well as those reported for the spinels fabricated by the similar solid-state reactions [18,19], but smaller than those for the spinels created by sophisticated techniques such as a template method [20] and spray-drying process [21]. Nevertheless, the combustion process has a great potential to create a variety of morphologies with different rate capacities because the rate capability depends critically on the electrochemically active surface area and/or pore size of the powders.…”

Section: Shown Insupporting

confidence: 66%

Nanostructured LiMn2O4 prepared by a glycine-nitrate process for lithium-ion batteries

et al. 2004

View full text Add to dashboard Cite

Section: Shown Insupporting

confidence: 66%

Nanostructured LiMn2O4 prepared by a glycine-nitrate process for lithium-ion batteries

et al. 2004

View full text Add to dashboard Cite

“…[11][12][13][14][15][16] However, for industrial battery electrode coating processes, relatively large particles with a small Brunauer-Emmett-Teller (BET) surface area are advantageous. In the present report, we show that it is not necessary to use micrometer-or submicrometer-sized oxide particles when aiming at high rate capabilities.…”

mentioning

confidence: 99%

Large-Agglomerate-Size Lithium Manganese Oxide Spinel with High Rate Capability for Lithium-Ion Batteries

Lanz

Kormann

Steininger

et al. 2000

J. Electrochem. Soc.

View full text Add to dashboard Cite

Lithium manganese oxide spinel (LiMn 2 O 4 ) is gaining prominence as a positive electrode material for lithium-ion batteries. After an extensive research effort (see, for example, Ref. 1-3), LiMn 2 O 4 spinel with good cycling stability is now available. LiMn 2 O 4 is an attractive alternative to Co and Ni oxides currently used in lithiumion batteries. [4][5][6] For certain applications, such as in electric vehicles, lithium-ion batteries are required to have a high specific power in addition to a high specific energy. 7-10 Thus, electrode materials with high rate capability are of interest.The main strategies adopted so far to reach a high rate capability of the spinel electrode have been the preparation of spinel particles with small sizes, and an optimization of the electrode conductivity. 11-16 However, for industrial battery electrode coating processes, relatively large particles with a small Brunauer-Emmett-Teller (BET) surface area are advantageous. In the present report, we show that it is not necessary to use micrometer-or submicrometer-sized oxide particles when aiming at high rate capabilities. We adapted a high-temperature synthesis route for preparing a spinel consisting of agglomerates with an average size of 15 m. The agglomerates were composed of primary particles (ca. 0.5-3 m). We measured the discharge capability of electrodes containing this spinel up to a discharge rate of 20 C (3 min for full discharge) in an electrochemical test cell with a metallic lithium counter electrode and found a high rate capability for this spinel. ExperimentalSpinel synthesis.-The lithium manganese oxide spinel was synthesized using a proprietary ceramic process. A mixture of manganese oxide (Mn 3 O 4 ) with a specific surface area of about 10 Ϯ 5 m 2 /g and ground lithium carbonate with a particle size of less than about 40 m was heated for 1 h under N 2 to about 750ЊC. The resulting product, which did not yet have a spinel structure, was thoroughly ground. This spinel precursor material was suspended with about 1 wt % of polyvinyl alcohol in water and spray-dried to form a granular powder. This powder was oxidized in O 2 at a temperature of about 780ЊC to form the spinel. The spinel was finally coated with Li 2 CO 3 by spray-drying an aqueous slurry of the spinel and 1 wt % of the coating substance in a stream of hot air (200-300ЊC).Physical characterization.-The lattice constant of the spinel was determined at room temperature by powder X-ray diffraction (XRD) in a Siemens D5000 diffractometer. It was found to be 8.224 Å. The lithium content of the spinel was calculated to be Li 1.09 Mn 1.91 O 4 (by linear interpolation of the lattice constants, 8.248 Å for Li 1.00 Mn 2.00 O 4 and 8.16 Å for Li 1.333 Mn 1.667 O 4 ). 17The particle size distribution of the spinel was determined in an aqueous slurry of the spinel powder by laser scattering using a Helos instrument. The result is shown in Fig. 1. The average particle (agglomerate) size is 15 m.Scanning electron micrographs (SEMs) of the spinel were recorded with a...

show abstract

“…These characteristics are becoming increasingly important in development of next generation high energy power sources. [4][5][6] In addition, spinel structure of LiMn 2 O 4 provides a 3D network for fast lithium ion diffusion.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Structural and Electrochemical Properties of Li_0.99Ni_0.46Mn_1.56O₄Cathode Material Using Synchrotron based in-situ X-ray Diffraction

Choi¹,

Yoon²,

Shoaib³

et al. 2013

Journal of Electrochemical Science and Technology

View full text Add to dashboard Cite

show abstract

Synthesis and characterization of LiMn2O4 for use in Li-ion batteries

Cited by 19 publications

References 17 publications

Nanostructured LiMn2O4 prepared by a glycine-nitrate process for lithium-ion batteries

Nanostructured LiMn2O4 prepared by a glycine-nitrate process for lithium-ion batteries

Large-Agglomerate-Size Lithium Manganese Oxide Spinel with High Rate Capability for Lithium-Ion Batteries

A Study on the Structural and Electrochemical Properties of Li_0.99Ni_0.46Mn_1.56O₄Cathode Material Using Synchrotron based in-situ X-ray Diffraction

Contact Info

Product

Resources

About

Synthesis and characterization of LiMn2O4 for use in Li-ion batteries

Cited by 19 publications

References 17 publications

Nanostructured LiMn2O4 prepared by a glycine-nitrate process for lithium-ion batteries

Nanostructured LiMn2O4 prepared by a glycine-nitrate process for lithium-ion batteries

Large-Agglomerate-Size Lithium Manganese Oxide Spinel with High Rate Capability for Lithium-Ion Batteries

A Study on the Structural and Electrochemical Properties of Li0.99Ni0.46Mn1.56O4Cathode Material Using Synchrotron based in-situ X-ray Diffraction

Contact Info

Product

Resources

About

A Study on the Structural and Electrochemical Properties of Li_0.99Ni_0.46Mn_1.56O₄Cathode Material Using Synchrotron based in-situ X-ray Diffraction