Nanoparticulate Fe2O3 and Fe2O3/C composites with different carbon proportions have been prepared for anode application in lithium ion batteries (LIBs). Morphological studies revealed that particles of Fe2O3 in the composites were well-dispersed in the matrix of amorphous carbon. The properties of the γ-Fe2O3 nanoparticles and the correlation with the particle size and connectivity were studied by electron paramagnetic resonance, magnetic, and Mössbauer measurements. The electrochemical study revealed that composites with carbon have promising electrochemical performances. These samples yielded specific discharge capacities of 1200 mAh/g after operating for 100 cycles at 1C. These excellent results could be explained by the homogeneity of particle size and structure as well as the uniform distribution of γ-Fe2O3 nanoparticles in the in situ generated amorphous carbon matrix.
AD -daggerDepartamento de Quimica Inorganica, Universidad del Pais Vasco UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain.double daggerParque Tecnologico de Alava, CIC energiGUNE, Albert Einstein 48, 01510 Minano, Alava, Spain.section signParque Cientifico y Tecnologico de Bizkaia, BCMATERIALS, Ibaizabal Bidea 500, 48160 Derio, Spain.parallelDepartamento de Electricidad y Electronica, Facultad de Ciencia y Tecnologia, Universidad del Pais Vasco (UPV-EHU), P.O. Box 644, 48080, Bilbao, Spain.perpendicularEnvironmental Energy Technologies Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road MS62R0203, Berkeley, California 94720-8168, United States.
AN - 25985317 BT - Inorganic Chemistry DA - 05/2015 DO - 10.1021/acs.inorgchem.5b00203 IS - 11 LA - eng N2 -Nanoparticulate Fe2O3 and Fe2O3/C composites with different carbon proportions have been prepared for anode application in lithium ion batteries (LIBs). Morphological studies revealed that particles of Fe2O3 in the composites were well-dispersed in the matrix of amorphous carbon. The properties of the γ-Fe2O3 nanoparticles and the correlation with the particle size and connectivity were studied by electron paramagnetic resonance, magnetic, and Mössbauer measurements. The electrochemical study revealed that composites with carbon have promising electrochemical performances. These samples yielded specific discharge capacities of 1200 mAh/g after operating for 100 cycles at 1C. These excellent results could be explained by the homogeneity of particle size and structure as well as the uniform distribution of γ-Fe2O3 nanoparticles in the in situ generated amorphous carbon matrix.
PY - 2015 SN - 1520-510X (Electronic) 0020-1669 (Linking) EP - 5239–5248 ST - Inorg Chem T2 - Inorganic Chemistry TI - Effect of Carbon Coating on the Physicochemical and Electrochemical Properties of Fe2O3 Nanoparticles for Anode Application in High Performance Lithium Ion Batteries VL - 54 ER -