Silicon Anode Design for Lithium-Ion Batteries: Progress and Perspectives
Journal
Journal of Physical Chemistry C
Journal Volume
121
Journal Issue
50
Pages
27775-27787
Date Issued
2017
Author(s)
Abstract
Silicon has long been regarded as a prospective anode material for lithium-ion batteries. However, its huge volumetric changes during cycling are a major obstacle to its commercialization, as these changes result in irreversible cracking and disconnection of the active mass from the current collector, as well as an excessive formation of a highly resistive solid electrolyte interphase. Multiple mechanical stress relief strategies that primarily use silicon nanostructurization have been previously developed. However, despite the significant improvements on the active material cycle life, using nanomaterials still results in complications, such as low conductivity, reduced volumetric energy density, and increased side reactions. This work provides a historical context for the development of silicon anodes and focuses on the surface chemistry and structural integrity of the electrode, thereby highlighting the most effective strategies reported recently for their optimization. ? 2017 American Chemical Society.
Subjects
Anodes; Electric batteries; Electrodes; Electrolytes; Secondary batteries; Silicon; Silicon batteries; Solid electrolytes; Stress relief; Surface chemistry; Active material; Anode material for lithium ion batteries; Current collector; Low conductivity; Mechanical stress; Solid electrolyte interphase; Volumetric changes; Volumetric energy densities; Lithium-ion batteries
Other Subjects
Anodes; Electric batteries; Electrodes; Electrolytes; Secondary batteries; Silicon; Silicon batteries; Solid electrolytes; Stress relief; Surface chemistry; Active material; Anode material for lithium ion batteries; Current collector; Low conductivity; Mechanical stress; Solid electrolyte interphase; Volumetric changes; Volumetric energy densities; Lithium-ion batteries
Type
journal article