These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Prelithiated Surface Oxide Layer Enabled High-Performance Si Anode for Lithium Storage.
    Author: Zhu Y, Hu W, Zhou J, Cai W, Lu Y, Liang J, Li X, Zhu S, Fu Q, Qian Y.
    Journal: ACS Appl Mater Interfaces; 2019 May 22; 11(20):18305-18312. PubMed ID: 31046217.
    Abstract:
    SiO x coating is an effective strategy to prolong the cycling stability of Si-based anodes due to the robust interaction between Si and the SiO x layer. However, the SiO x layer-protected Si anode is limited by the relatively low initial Coulombic efficiency and sluggish Li+ diffusion ability induced by the SiO x layer. Herein, we present the preparation of selectively prelithiated Si@SiO x (Si@Li2SiO3) anode by using a facile strategy to resolve the above issues. As the anode for lithium ion batteries, Si@Li2SiO3 exhibits a high initial Coulombic efficiency (ICE) of 89.1%, an excellent rate performance (959 mA h g-1 at 30 A g-1), and a superior capacity retention (3215 mA h g-1). The full cell with LiFePO4 cathode and Si@Li2SiO3 anodes is successfully assembled, disclosing a high ICE of 91.1% and excellent long cycling stability. The superior electrochemical performance of Si@Li2SiO3 can be attributed to the coating layer, which can strengthen the integrity of the electrode, decrease irreversible reactions, and provide efficient Li+ diffusion channels.
    [Abstract] [Full Text] [Related] [New Search]