title: A Convenient and Versatile Method To Control the Electrode Microstructure toward High-Energy Lithium-Ion Batteries.
abstract: Control over porous electrode microstructure is critical for the continued improvement of electrochemical performance of lithium ion batteries. This paper describes a convenient and economical method for controlling electrode porosity, thereby enhancing material loading and stabilizing the cycling performance. Sacrificial NaCl is added to a Si-based electrode, which demonstrates an areal capacity of ∼4 mAh/cm(2) at a C/10 rate (0.51 mA/cm(2)) and an areal capacity of 3 mAh/cm(2) at a C/3 rate (1.7 mA/cm(2)), one of the highest material loadings reported for a Si-based anode at such a high cycling rate. X-ray microtomography confirmed the improved porous architecture of the SiO electrode with NaCl. The method developed here is expected to be compatible with the state-of-the-art lithium ion battery industrial fabrication processes and therefore holds great promise as a practical technique for boosting the electrochemical performance of lithium ion batteries without changing material systems.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.forename: Qing
authors.initials: Q
authors.lastname: Yang
authors.affiliation: Energy Institute, Istanbul Technical University , Istanbul, 34469, Turkey.
authors.forename: Neslihan
authors.initials: N
authors.lastname: Yuca
authors.forename: Min
authors.initials: M
authors.lastname: Ling
authors.forename: Kenneth
authors.initials: K
authors.lastname: Higa
authors.forename: Vincent S
authors.initials: VS
authors.lastname: Battaglia
authors.forename: Dilworth Y
authors.initials: DY
authors.lastname: Parkinson
authors.forename: Venkat
authors.initials: V
authors.lastname: Srinivasan
authors.forename: Gao
authors.initials: G
authors.lastname: Liu
keywords: Porosity; X-ray tomography; conductive polymer binder; high loading; high-capacity anode; lithium-ion battery