A Nanocrystalline Fe2O3 Film Anode Prepared by Pulsed Laser Deposition for Lithium-Ion Batteries

Abstract

Nanocrystalline Fe2O3 thin films are deposited directly on the conduct substrates by pulsed laser deposition as anode materials for lithium-ion batteries. We demonstrate the well-designed Fe2O3 film electrodes are capable of excellent high-rate performance (510 mAh g− 1 at high current density of 15,000 mA g− 1) and superior cycling stability (905 mAh g− 1 at 100 mA g− 1 after 200 cycles), which are among the best reported state-of-the-art Fe2O3 anode materials. The outstanding lithium storage performances of the as-synthesized nanocrystalline Fe2O3 film are attributed to the advanced nanostructured architecture, which not only provides fast kinetics by the shortened lithium-ion diffusion lengths but also prolongs cycling life by preventing nanosized Fe2O3 particle agglomeration. The electrochemical performance results suggest that this novel Fe2O3 thin film is a promising anode material for all-solid-state thin film batteries.

Pulsed Laser Deposited Films for Microbatteries

“…Significant efforts have been devoted to the design and development of new PLD-grown anode materials for SSMBs, yielding a high energy density (from 500 to 1500 mAh·g −1 ) and electrochemical stability [341][342][343][344][345][346][347][348][349][350][351][352][353][354]. Table 10 summarizes the PLD-growth conditions and electrochemical properties of some new anodes proposed for lithium microbatteries.…”

Laser Irradiation of Electrode Materials for Energy Storage and Conversion

“…These ejected species can either be directly collected as ultra-fine nanomaterials for subsequent use or be confined in reactive media to produce other nanostructured compounds. 16,36,37 Such flexibility of modulating the reaction environments further endows the laser-mediated materials synthesis with a highly tunable and versatile feature. For irradiated materials under extremely strong laser irradiance ablation will occur, thus making it capable of producing designable patterns.…”

“…16,42 Laser irradiation can be carried out in different media, such as vacuum conditions, ambient atmosphere, inert conditions, and liquids. 16,21,36,44,47 These media strongly affect the laser-induced effects as well as the materials thus obtained. Figures 3D and 3E compare the scanning electron microscopy (SEM) images of laser-induced graphene (LIG) synthesized under different conditions.…”

“…Due to the broad spectrum of laser sources and highly tunable operations, a large number of laser-mediated materials synthesis technologies have been proposed, such as pulsed laser deposition (PLD), direct laser writing (DLW), laser fragmentation in liquid (LFL), laser-assisted pyrolysis (LAP), and selective laser sintering, to name a few. 16,36,49,50 These approaches only represent a minor portion of the newly developed laser-mediated technologies in recent years, which reveal a prosperous filed 16 Copyright 2017, American Chemical Society. (B and C) Electron microscopy observation of PbS nanoparticles before (B) and after (C) laser irradiation.…”

“…9 PLD has been widely used to manipulate the electrodes for LIBs and SIBs. 36,48,[139][140][141] In a typical process, the target materials are fragmented into ultra-fine and amorphous particles by pulsed laser under a vacuum condition, and the ultra-fine fragmented particles are then directly collected by the current collectors ready for energy storage. The PLD-derived electrodes are in fact aggregations of small-sized amorphous particles via which the active sites are essentially exposed and the diffusion distance for metal ions is fundamentally shortened.…”