Prelithiated Silicon Nanowires as an Anode for Lithium Ion Batteries

Silicon is one of the most promising anode materials for the next-generation high-energy lithium ion battery (LIB), while sulfur and some other lithium-free materials have recently shown high promise as cathode materials. To make a full battery out of them, either the cathode or the anode needs to b...

Full description

Saved in:
Bibliographic Details
Published in:ACS nano 2011-08, Vol.5 (8), p.6487-6493
Main Authors: Liu, Nian, Hu, Liangbing, McDowell, Matthew T, Jackson, Ariel, Cui, Yi
Format: Article
Language:English
Subjects:
Anodes
Cathodes
Electrodes
Lithium-ion batteries
Nanostructure
Nanowires
Scanning electron microscopy
Silicon
Sulfur
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Silicon is one of the most promising anode materials for the next-generation high-energy lithium ion battery (LIB), while sulfur and some other lithium-free materials have recently shown high promise as cathode materials. To make a full battery out of them, either the cathode or the anode needs to be prelithiated. Here, we present a method for prelithiating a silicon nanowire (SiNW) anode by a facile self-discharge mechanism. Through a time dependence study, we found that 20 min of prelithiation loads ∼50% of the full capacity into the SiNWs. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) studies show that the nanostructure of SiNWs is maintained after prelithiation. We constructed a full battery using our prelithiated SiNW anode with a sulfur cathode. Our work provides a protocol for pairing lithium-free electrodes to make the next-generation high-energy LIB.
ISSN:1936-0851
1936-086X
DOI:10.1021/nn2017167