Preparation of nanowires of M substituted manganese dioxides (M=Al, Co, Ni) by the electrochemical-hydrothermal method

A variety of γ-MnO2 compounds containing a metal M (with M=Al, Co or Ni) has been synthesized using the electrochemical-hydrothermal method. Depending on the selected synthesis parameters (temperature, pH, current density, presence of M) various structures and morphologies were obtained for the deposits. The experimental conditions allowing us to prepare M-containing γ-MnO2 nanowires, and the structural and physico-chemical characteristics of the obtained samples are presented. The electrochemical Li insertion behavior of these M-containing γ-MnO2 nanowires is briefly described.