TY - JOUR

T1 - Ordered SnO2 nanotube arrays of tuneable geometry as a lithium ion battery material with high longevity

AU - Zhuo, Ying

AU - Tymek, Sarah

AU - Sun, Hong

AU - Barr, Maïssa K.S.

AU - Santinacci, Lionel

AU - Bachmann, Julien

N1 - Funding Information: This work was financed in part by the European Research Council vie the ERC Consolidator Grant 'Solacylin' (grant agreement 647281). We thank Adriana Both-Engel (CTFM chair at FAU), Bingzhe Wang (Chair of Physical Chemistry I at FAU), and Paula Hoppe (Chair of Particle Technology at FAU) for their experimental support with XPS, gravimetric measurements, and ICP-OES, respectively. Publisher Copyright: This journal is © The Royal Society of Chemistry. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Ordered arrays of straight, parallel SnO2 nanotubes are prepared by atomic layer deposition (ALD) on inert 'anodic' aluminum oxide porous membranes serving as templates. Various thicknesses of the SnO2 tube walls and various tube lengths are characterized in terms of morphology by scanning electron microscopy (SEM), chemical identity by X-ray photoelectron spectroscopy (XPS) and phase composition by X-ray diffraction (XRD). Their performance as negative electrode ('anode') materials for lithium-ion batteries (LIBs) is quantified at different charge and discharge rates in the absence of additives. We find distinct trends and optima for the dependence of initial capacity and long-term stability on the geometric parameters of the nanotube materials. A sample featuring SnO2 tubes of 30 µm length and 10 nm wall thickness achieves after 780 cycles a coulombic efficiency of >99% and a specific capacity of 671 mA h g-1. This value represents 92% of the first-cycle capacity and 86% of the theoretical value.

AB - Ordered arrays of straight, parallel SnO2 nanotubes are prepared by atomic layer deposition (ALD) on inert 'anodic' aluminum oxide porous membranes serving as templates. Various thicknesses of the SnO2 tube walls and various tube lengths are characterized in terms of morphology by scanning electron microscopy (SEM), chemical identity by X-ray photoelectron spectroscopy (XPS) and phase composition by X-ray diffraction (XRD). Their performance as negative electrode ('anode') materials for lithium-ion batteries (LIBs) is quantified at different charge and discharge rates in the absence of additives. We find distinct trends and optima for the dependence of initial capacity and long-term stability on the geometric parameters of the nanotube materials. A sample featuring SnO2 tubes of 30 µm length and 10 nm wall thickness achieves after 780 cycles a coulombic efficiency of >99% and a specific capacity of 671 mA h g-1. This value represents 92% of the first-cycle capacity and 86% of the theoretical value.

KW - ATOMIC LAYER DEPOSITION

KW - PERFORMANCE ANODE MATERIAL

KW - THIN-FILMS

KW - ELECTROCHEMICAL PERFORMANCE

KW - ELECTRODE MATERIALS

KW - ENERGY-STORAGE

KW - TIN

KW - NANOPARTICLES

KW - NANOWIRES

KW - HYBRID

UR - http://www.scopus.com/inward/record.url?scp=85083553032&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/f6991763-ac56-3054-a59d-7ce9584caa3f/

U2 - 10.1039/c9na00799g

DO - 10.1039/c9na00799g

M3 - Article

AN - SCOPUS:85083553032

VL - 2

SP - 1417

EP - 1426

JO - Nanoscale Advances

JF - Nanoscale Advances

SN - 2516-0230

IS - 4

ER -