Spray-pyrolysis preparation of Li 4 Ti 5 O 12 /si composites for lithium-ion batteries

A. Terechshenko, A. Sanbayeva, Moulay-Rachid Babaa, A. Nurpeissova, Zhumabay Bakenov

Research output: Contribution to journalArticle

Abstract

This paper introduces the novel anode material which is Li 4 Ti 5 O 12 /Si prepared by gas-stated method, mainly spray-pyrolysis technique. The literature review performed in this paper revealed two main components which can be potentially mixed into the efficient anode material. Silicon (Si) has the highest possible capacity of 4200 mAh g -1 among all commonly used anodes. Due to its ‘zero-strain’ (<1% volume change) properties and stable cycling, Li 4 Ti 5 O 12 (LTO) is considered as a promising anode for lithium ion batteries. Combination of these two anode materials is considered as a promising approach to prepare a high performance composite anode. The precursor solution consisted of homogeneous mixture of lithium nitrate and titanium tetraisopropoxide dissolved in deionized water with equimolar concentration of 0.5 M. The aerosol formation was performed at nitrogen environment and the droplets were carried into the quartz tube reactor at the flowrate of 4 L min -1 . The rector temperature was held at 800 °C. The spray-pyrolysis synthesis was performed as one-step operation, excluding the need of calcination of as-prepared powders, and continuous process by the mean of peristaltic pump. The as-prepared powders had wide size distribution from nanometers to microns. The materials obtained had well-crystallized structure with insignificant amount of impurities. The powders were analyzed by the following analytical equipment: 1) the presence of Li 4 Ti 5 O 12 and Si in the obtained composite was confirmed by X-ray diffraction technique (XRD); 2) The structure and morphology of LTO and Si molecules were observed and studied with Scanning Electron Microscopy (SEM).

Original languageEnglish
Pages (from-to)69-73
Number of pages5
JournalEurasian Chemico-Technological Journal
Volume21
Issue number1
DOIs
Publication statusPublished - Jan 1 2019

Fingerprint

Spray pyrolysis
pyrolysis
sprayers
electric batteries
Anodes
anodes
lithium
Silicon
preparation
composite materials
Composite materials
Powders
ions
silicon
Quartz
Deionized water
Aerosols
Lithium
Nitrates
Calcination

Keywords

  • Lithium titanium oxide
  • Lithium-ion battery
  • Spray pyrolysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Spray-pyrolysis preparation of Li 4 Ti 5 O 12 /si composites for lithium-ion batteries . / Terechshenko, A.; Sanbayeva, A.; Babaa, Moulay-Rachid; Nurpeissova, A.; Bakenov, Zhumabay.

In: Eurasian Chemico-Technological Journal, Vol. 21, No. 1, 01.01.2019, p. 69-73.

Research output: Contribution to journalArticle

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