Synthesis, characterization and electrochemical properties of aluminum-substituted alpha-Ni(OH)2 hollow spheres

Fabrication, characterization, and magnetic behavior of porous ZnFe2O4 hollow microspheres

“…In the past, various methodologies have been adopted for the preparation of hollow spheres [8][9][10][11][12]. However, the main process for the preparation of hollow spheres generally requires removable templates such as monodispersed silica, polystyrene latex spheres, metal nanoparticles, gas bubbles, and polymer spheres followed by sequential adsorption of magnetic nanoparticles on the templates [13][14][15][16][17][18]. The typical procedure is that the template is coated by either direct surface reaction utilizing special functional groups on the core or controlled precipitation of inorganic precursors on the surface of template to induce coating, followed by the removal of template core through calcination or solvent dissolution [19][20][21].…”

Synthesis and characterization of hollow MoS2 microspheres grown from MoO3 precursors

“…These include drugs, cosmetics, dyes, and inks, and for the protection of fillers, catalysts, and pigments due to their advantageous properties like low density, large specific area, mechanical and thermal stability, and surface permeability [3][4][5][6]. Therefore, a variety of chemical and physicochemical approaches have been employed to prepare hollow spheres, such as: self-assembly routes [7], sonochemical process [8], hydrothermal method [9], emulsion/interfacial polymerization strategies [10], and template-assisting techniques including "hard templates," such as silica spheres [11], polystyrene microspheres [12], and "soft templates," such as vesicles [13], and emulsion droplets [14].…”

Aluminum-based materials for advanced battery systems

“…Under the circumstances, nickel-based LDHs are suggested to be the electrode materials for alkaline secondary battery in order to increase configurational stability of α-Ni(OH)2. The Ni 2+ in Ni(OH)2 host layer are partly substituted by metal ion like Al 3+ [229][230][231][232], Co 3+ [233,234], Fe 3+ [235,236], Zn 2+ [237,238], Mn 3+ [236,239], or Y 3+ [240], in the nickel-based LDHs. Among these fungible metal ion, Al 3+ is thought to be the best candidate for its good electrochemical suitability [230].…”