Understanding and Enhancing Silicon Nanoparticle Distribution during Electrode Processing

Silicon-dominant anodes are of great interest because of their potential to boost the cell-level energy of state-of-the-art Li-ion batteries. While silicon materials have been extensively studied, understanding interactions at the electrode level has recieved little attention, especially the coating...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the Electrochemical Society 2024-05, Vol.171 (5), p.50542
Main Authors: Wu, Bingbin, Quinn, Joseph, Li, Jingnan, Li, Qiuyan, Liu, Dianying, Martin, Witness, Baar, Kevin, Zhong, Lirong, Wang, Chongming, Xiao, Jie
Format: Article
Language:English
Subjects:
batteries - lithium
energy storage
silicon
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Silicon-dominant anodes are of great interest because of their potential to boost the cell-level energy of state-of-the-art Li-ion batteries. While silicon materials have been extensively studied, understanding interactions at the electrode level has recieved little attention, especially the coating process of Si particles, which plays an equally important role in unlocking the full potential of silicon anodes. Herein, the electrode processing of a Si-dominated anode (52.8 wt%, 3.5–4.5 mAh cm −2 ) is being investigated to understand the relationship of processing on the morphology and properties of Si anodes at the electrode level. It has been found that almost-undetectable Si agglomerates easily form during electrode processing, which grow into largeprotrusions after lithiation and trigger potential internal shorting and self-discharge problems. A facile slurry filtration step is proposed to homogenize the particle distribution within Si-dominant electrodes which improves the electrochemical performance and storage stability of Si-based Li ion batteries.
ISSN:0013-4651
1945-7111
DOI:10.1149/1945-7111/ad4919