title: High-performance flexible nanoporous Si-carbon nanotube paper anodes for micro-battery applications.
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 μAh cm(-2) at a current density of 54 μA 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 μA 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.
authors.affiliation: Center for Nano Science and Technology @PoliMi, Istituto Italiano di Tecnologia, Via Pascoli 70/3, I-20133 Milano, Italy. Department of Energy, Politecnico di Milano, Via Ponzio 34/3, I-20133 Milano, Italy.
authors.forename: Erika
authors.initials: E
authors.lastname: Biserni
authors.forename: Alice
authors.initials: A
authors.lastname: Scarpellini
authors.forename: Andrea Li
authors.initials: AL
authors.lastname: Bassi
authors.forename: Paola
authors.initials: P
authors.lastname: Bruno
authors.forename: Yun
authors.initials: Y
authors.lastname: Zhou
authors.forename: Ming
authors.initials: M
authors.lastname: Xie