Synthesis and electrochemical properties of porous materials:mesoporous tungsten oxide and vanadium oxide aerogel

摘要

Since the preparation of MCM-41 type materials by Mobil scientists about 10 years ago,there has been rapid progress in the design of porous,high surface area materials.In parallel,the electrochemical properties of nanomaterials have become the subject of a growing number of studies due to their specific behavior.Evolving from bulk materials to a smaller scale can affect the electrochemical mechanism or favour new reactions.The main advantage of high surface area materials is to reduce the diffusion length in the solid thus enabling faster reactions.We will illustrate these phenomena through two examples:mesoporous tungsten oxides for electrochromic applications and vanadium oxide aerogels as cathode material in lithium batteries.