Hollow Nanostructured Metal Silicates with Tunable Properties for Lithium Ion Battery Anodes

Abstract

Hollow nanostructured materials have attracted considerable interest as lithium ion battery electrodes because of their good electrochemical properties. In this study, we developed a general procedure for the synthesis of hollow nanostructured metal silicates via a hydrothermal process using silica nanoparticles as templates. The morphology and composition of hollow nanostructured metal silicates could be controlled by changing the metal precursor. The as-prepared hierarchical hollow nanostructures with diameters of ∼100-200 nm were composed of variously shaped primary particles such as hollow nanospheres, solid nanoparticles, and thin nanosheets. Furthermore, different primary nanoparticles could be combined to form hybrid hierarchical hollow nanostructures. When hollow nanostructured metal silicates were applied as anode materials for lithium ion batteries, all samples exhibited good cyclic stability during 300 cycles, as well as tunable electrochemical properties.

Boric Acid Assisted Reduction of Graphene Oxide: A Promising Material for Sodium-Ion Batteries

“…[1][2][3][4][5] The high demand for LIBs, however, has led to increasing concern about the limited resources and high cost of lithium. Consequently, great efforts have been spent on finding alternatives to LIBs.…”

Hollow Silica Particles: Recent Progress and Future Perspectives

“…Knowledge of shell porosity is of utmost importance for applications such as drug delivery and catalysis, where HSPs are generally used either as containers or as high surface area supports. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy are applied to determine the types of functional groups (e.g., -NH 2 , -CH 3 , -C 2 H 5 , epoxide, and sulfide) on the HSP surface [21,51,60]. This information helps in the conjugation of HSPs with other materials (e.g., polymers, and drug delivery molecules) and in making hydrophilic or hydrophobic coatings.…”

Low cost and scalable method for modifying surfaces of hollow particles from hydrophilic to hydrophobic

“…Hollow silica particles are a unique class of materials that has applications in various elds such as drug delivery, thermal insulation, supercapacitors, battery electrolytes, phase change materials, and superhydrophobic coatings. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] There are several strategies for synthesizing hollow silica particles such as use of polymer templates, polymer micelles, spray drying, ultrasonic spray pyrolysis, viruses, bacteria, and solid silica particles. [15][16][17][18][19][20][21] Although the synthesis of hydrophilic silica particles is well developed, several applications require hydrophobic hollow silica particles.…”