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Synthesis of Two‐Dimensional Transition‐Metal Phosphates with Highly Ordered Mesoporous Structures for Lithium‐Ion Battery Applications
Author(s) -
Yang Dan,
Lu Ziyang,
Rui Xianhong,
Huang Xiao,
Li Hai,
Zhu Jixin,
Zhang Wenyu,
Lam Yeng Ming,
Hng Huey Hoon,
Zhang Hua,
Yan Qingyu
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201404615
Subject(s) - mesoporous material , materials science , lithium (medication) , mesoporous organosilica , nanostructure , nanotechnology , transition metal , cathode , chemical engineering , mesoporous silica , chemistry , organic chemistry , catalysis , medicine , endocrinology , engineering
Materials with ordered mesoporous structures have shown great potential in a wide range of applications. In particular, the combination of mesoporosity, low dimensionality, and well‐defined morphology in nanostructures may exhibit even more attractive features. However, the synthesis of such structures is still challenging in polar solvents. Herein, we report the preparation of ultrathin two‐dimensional (2D) nanoflakes of transition‐metal phosphates, including FePO 4 , Mn 3 (PO 4 ) 2 , and Co 3 (PO 4 ) 2 , with highly ordered mesoporous structures in a nonpolar solvent. The as‐obtained nanoflakes with thicknesses of about 3.7 nm are constructed from a single layer of parallel‐packed pore channels. These uniquely ordered mesoporous 2D nanostructures may originate from the 2D assembly of cylindrical micelles formed by the amphiphilic precursors in the nonpolar solvent. The 2D mesoporous FePO 4 nanoflakes were used as the cathode for a lithium‐ion battery, which exhibits excellent stability and high rate capabilities.