High Li+-ion Storage Capacity and Multi-electrochromism Behavior of Electrodeposited Molybdenum Doped Vanadium Oxide Films
Molybdenum doped vanadium oxide (Mo doped V2O5) xerogel films were prepared by cathodic electrodeposition on indium tin oxide (ITO) substrate from Mo doped V2O5 sol synthesized by sol sol-gel combined with hydrothermal reaction. Mo doped V2O5 xerogel films were deposited at different potentials between -0.01 V and -0.7 V vs saturated calomel electrode (SCE) with the potentiosta potentiostatic mode tic mode. The structur structure was characterized for using X-ray diffraction (XRD), atomic force microscopy (AFM). These studies reveal that films consist of layered V2O5 host structure with various surface morphologies depending upon the deposition potentials. As shown by the cyclic voltammograms results, the films electrodeposited at -0.3 V exhibited Li+-ion storage capacity as high as ca. 70 mC/cm 2 for the 50th cycle and showed multi multi-electrochromic behavior (orangered-green-blue) depending on the extent of inte intercalation during the electrochemical lithium rcalation insertion/extraction processes. It is proposed that the particles forming the films arrang arrange directionally and crystalliz rystallize part partly, which , lead to the enhanced electroactivity of vanadium oxide films by shortening the diffusion distance or quickening the transference ence rate of Li+ ions in the films.
Electrodeposition Molybdenum doped vanadium oxide Film Electrochromism
Aiping Jin Wen Chen Quanyao Zhu
College of Chemical Engineering, Wuhan University of Science and Engineering, Wuhan 430073, P.R. Chi State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, and School of Ma
国际会议
青岛
英文
799-802
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）