Defect and Surface Area Control in Hydrothermally Synthesized LiMn0.8Fe0.2PO4 Using a Phosphate Based Structure Directing Agent

详细信息    查看全文

• 作者：J眉rgen Schoiber ; Gerold Tippelt ; G眉nther J. Redhammer ; Chihiro Yada ; Oleksandr Dolotko ; Raphael J. F. Berger ; Nicola H眉sing
• 刊名：Crystal Growth & Design
• 出版年：2015
• 出版时间：September 2, 2015
• 年：2015
• 卷：15
• 期：9
• 页码：4213-4218
• 全文大小：372K
• ISSN：1528-7505

文摘

As confirmed by ion coupled plasma-optical emission spectroscopy and powder X-ray diffraction, stoichiometrically pure samples of olivine type LiFe_0.2Mn_0.8PO₄ in the presence of a phosphoric acid ester based structure directing agent have been prepared. A Rietveld analysis of X-ray and n⁰ diffraction data suggests that the solids are largely free of defect occupation of Fe at the lithium sites. This is confirmed by ⁵⁷Fe-M枚脽bauer spectroscopic investigations. The use of the structure directing surfactant results in significantly higher specific surface areas (SSA) and smaller particle sizes as compared to samples prepared without using a surfactant.