Fig. 5From: Synthesis of Porous Hollow Spheres Co@TiO2−x-Carbon Composites for Highly Efficient Lithium-Ion Batteriesa N2 adsorption-desorption isotherms; b pore size distributions; c EPR spectra of Co@TiO2−x-carbon and TiO2; d XPS spectra of Co@TiO2−x-carbonBack to article page