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Synthesis of Alumina-Grafted Manganese Oxide Particles Using Surfactants through Coprecipitation Method and Their Thermal Properties

Title
Synthesis of Alumina-Grafted Manganese Oxide Particles Using Surfactants through Coprecipitation Method and Their Thermal Properties
Author
오성근
Keywords
Manganese oxide; Alumina; Surfactant; Coprecipitation process; Thermal properties; LITHIUM ION BATTERIES; CATHODE MATERIALS; FACILE SYNTHESIS; WATER-TREATMENT; DECOMPOSITION; LIMN2O4; MN3O4; NANOPARTICLES; MN2O3; GAMMA-AL2O3
Issue Date
2013-10
Publisher
대한화학회
Citation
Bulletin of the Korean Chemical Society, 2013, 34(12), P.3559-3564
Abstract
Alumina particles were grafted onto the surface of manganese oxide particles via the coprecipitation process using surfactant and cosurfactant. The phase of Mn/Al salts (Phase I) and the phase of precipitation agent (Phase II) were prepared in aqueous surfactant solution, separately. Phase II was added into Phase I and the reaction was performed to form the precursors of composites through hydrogen bonding between Mn(OH)2 and Al(OH)3 prepared by the reaction of Mn/Al salts with the precipitation agent. The alumina-grafted manganese oxide particles were obtained as a final product after calcination. The concentrations of Al salt and surfactant were varied to investigate their effects on the formation and the crystallinity of composites. In addition, the crystal structure of products could be controlled by changing the calcination temperature. Through thermal analyses, it was found that the thermal stability of manganese oxide was improved by the introduction of alumina on its surface.
URI
http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=JCGMCS_2013_v34n12_3559http://hdl.handle.net/20.500.11754/44738
ISSN
0253-2964; 1229-5949
DOI
10.5012/bkcs.2013.34.12.3559
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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