Structure‐Properties Relationship in Iron Oxide‐Reduced Graphene Oxide Nanostructures for Li‐Ion Batteries

• DOI: 10.1002/adfm.201300190
• Publication Date: 2013-04-05T12:26:57Z
• Authors: Seung‐Ho Yu; Donato E. Conte; Seunghwan Baek; Dong‐Chan Lee; Seung‐Keun Park; Kyung Jae Lee; Yuanzhe Piao; Yung‐Eun Sung; Nicola Pinna
• Keywords: ABSORPTION FINE-STRUCTURE; POWDER DIFFRACTION; REVERSIBLE CAPACITY; FE3O4-GRAPHENE NANOCOMPOSITES; PERFORMANCE ANODE MATERIAL; 02 engineering and technology; X-RAY-DIFFRACTION; LITHIUM STORAGE; NONAQUEOUS SYNTHESIS; ELECTROCHEMICAL PERFORMANCE; SIZE DISTRIBUTION; 0210 nano-technology

Abstract Non‐aqueous sol‐gel routes involving the reaction of metal oxide precursors in organic solvents (e.g., benzyl alcohol) at moderate temperature and pressure, offer advantages such as high purity, reproducibility ability to control crystal growth without need using additional ligands. In this paper, a study carried out on series iron oxide/reduced graphene composites is presented elucidate structure‐properties relationship leading an improved electrochemical performance composites. Moreover, it demonstrated that easy production variety composition ranges, allows fine over final particles size, density distribution. The materials obtained are remarkable terms particle's size homogeneity dispersion onto reduced surface. synthesis method used obtain clearly affects performances through restacking sheets. It shown homogeneous less defective enables good even current densities (over 500 mAh/g delivered 1600 mA/g). properties samples reach best compromise between specific capacity, rate capability cycle stability reported so far.