High-performance flexible nanoporous Si-carbon nanotube paper anodes for micro-battery applications. (11th May 2016)

• Record Type: Journal Article
• Authors: Biserni, Erika; Scarpellini, Alice; Bassi, Andrea Li; Bruno, Paola; Zhou, Yun; Xie, Ming
• Is Part Of: Nanotechnology. Volume 27:Number 24(2016)
• Publication Date: 2016-05-11
• Subjects: nanoporous -- flexible -- Si-CNT paper anodes; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/0957-4484/27/24/245401
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: Nanoporous Si has been grown by pulsed laser deposition on a free-standing carbon nanotube (CNT) paper sheet for micro-battery anodes. The Si deposition shows conformal coverage on the CNT paper, and the Si-CNT paper anodes demonstrate high areal capacity of ∼1000 μ Ah cm −2 at a current density of 54 μ A cm −2, while 69% of its initial capacity is preserved when the current density is increased by a factor 10. Excellent stability without capacity decay up to 1000 cycles at a current density of 1080 μ A cm −2 is also demonstrated. After bending along the diameter of the circular paper disc many times, the Si-CNT paper anodes preserve the same morphology and show promising electrochemical performance, indicating that nanoporous Si-CNT paper anodes can find application for flexible micro-batteries.