Everlasting Living and Breathing Gyroid 3D Network in Si@SiOx/C Nanoarchitecture for Lithium Ion Battery

Abstract

Silicon-based materials are the most promising candidates to surpass the capacity limitation of conventional graphite anode for lithium ion batteries. Unfortunately, Si-based materials suffer from poor cycling performance and dimensional instability induced by the large volume changes during cycling. To resolve such problems, nanostructured silicon-based materials with delicately controlled microstructure and interfaces have been intensively investigated. Nevertheless, they still face problems related to their high synthetic cost and their limited electrochemical properties and thermal stability. To overcome these drawbacks, we demonstrate the strategic design and synthesis of a gyroid three-dimensional network in a Si@SiO x /C nanoarchitecture (3D-Si@SiO x /C) with synergetic interaction between the computational prediction and the synthetic optimization. This 3D-Si@SiO x /C exhibits not only excellent electrochemical performance due to its structural stability and superior ion/electron transport but also enhanced thermal stability due to the presence of carbon, which was formed by a cost-effective one-pot synthetic route. We believe that our rationally designed 3D-Si@SiO x /C will lead to the development of anode materials for the next-generation lithium ion batteries.

Hierarchical Hollow Bimetal Oxide Microspheres Synthesized through a Recrystallization Mechanism for High‐Performance Lithium‐Ion Batteries

“…Figure 3(i and j) presents the images of the hollow structure, which has a diameter of about 6 μm and consists of many discrete nanoparticles with a size of around 50 nm. This result is in accordance with the result calculated using the Scherrer equation [24][25][26][27] (Table S1). Besides, the diffraction spots displayed by the SAED patterns in Figure 3l prove that the microspheres consist of crystalline nanoparticles.…”

Exploiting Polythiophenyl‐Triazine‐Based Conjugated Microporous Polymer with Superior Lithium‐Storage Performance

“…Nowadays, the increasing resource deprivation and the serious environmental pollution have compelled human to develop sustainable energy systems as well as energy‐storage materials and devices . Lithium‐ion batteries (LIBs), as the leading energy‐storage devices, have been widely used in portable electronic equipment owing to their low self‐discharge, superior energy/power density, and excellent cycling life . However, the development of electrical vehicles (EVs) and large‐scale energy‐storage systems (EESs) have caused higher requirements for next‐generation LIBs.…”

Tungsten disulfide: synthesis and applications in electrochemical energy storage and conversion

“…Current energy storage solutions at both the portable devices and grid level are being implemented courtesy Li + [138][139][140]. The large interlayer spacing (0.618 nm) of WS 2 provides a feasible environment for the accommodation of Li + or Na + as guest species [19,141].…”