Facile one-pot method synthesis CNT–GeO2 nanocomposite for high performance Li ion battery anode material
For the first time, we synthesized a carbon nanotubes–GeO2 nanocomposite via a facile one-pot solution method. The as-prepared carbon nanotubes–GeO2 nanocomposite appears as webs of curved nanotubes and nanoparticles, forming strong intertwined entanglements with a three-dimensional (3D) network structure. Such a hybrid structure can not only greatly improve the electron conductivity of the nanocomposite, but also effectively buffer the volume change of GeO2 during the charge–discharge process. The carbon nanotubes–GeO2 nanocomposite retains 813.7 mA h g−1 even after 500 cycles at the current rate of 0.2 A g−1 as an electrode material for Li ion batteries (LIBs) and shows high rate capability at variable current rates.