A critical SiOx layer on Si porous structures to construct highly-reversible anode materials for lithium-ion batteries. Issue 45 (22nd May 2017)

• Record Type: Journal Article
• Authors: Chen, Yifan; Lin, Yangfan; Du, Ning; Zhang, Yaguang; Zhang, Hui; Yang, Deren
• Is Part Of: Chemical communications. Volume 53:Issue 45(2017)
• Page Start: 6101
• Page End: 6104
• Publication Date: 2017-05-22
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c7cc02732j
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A novel Si/SiO x porous structure with an ∼9 nm SiO x coating layer demonstrates a highly reversible discharge capacity of over 915 mA h g −1 after 500 long cycles. Abstract : A novel Si/SiO x porous structure with a SiO x coating layer of varying thicknesses was prepared via a simple annealing and acid washing process. When used as an anode material for lithium-ion batteries, the Si/SiO x porous structure with an ∼9 nm SiO x coating layer demonstrates significantly improved electrochemical performance with a high reversible discharge capacity of over 915 mA h g −1 after 500 long cycles at 1 A g −1 . The lithiation mechanism of a SiO x layer of different thicknesses has also been investigated.