eprintid: 10111933
rev_number: 19
eprint_status: archive
userid: 608
dir: disk0/10/11/19/33
datestamp: 2020-10-12 15:52:21
lastmod: 2021-09-28 22:07:15
status_changed: 2020-10-12 15:52:21
type: article
metadata_visibility: show
creators_name: Song, W
creators_name: Jiang, Q
creators_name: Xie, X
creators_name: Brookfield, A
creators_name: McInnes, EJL
creators_name: Shearing, PR
creators_name: Brett, DJL
creators_name: Xie, F
creators_name: Riley, DJ
title: Synergistic storage of lithium ions in defective anatase/rutile TiO2 for high-rate batteries
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F43
keywords: anatase and rutile TiO2; oxygen vacancy; lithium storage; synergistic effect
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: Fabrication of heterostructured materials is a strategy to boost the charge-transfer kinetics and the performance of high-rate lithium storage. Here, a facile, low-temperature method for the synthesis of high-area TiO2 nanospheres containing both anatase and rutile phases is described. The as-prepared materials contain a high concentration of oxygen vacancies facilitating electron conduction in the anatase phase and theoretical calculations provide evidence of a low energy barrier for Li+ transport in the rutile phase. The synergy between the two phases renders the shared conduction of electrons through anatase and Li+ ions via rutile at high-current rates, leading to the anodes that outperform the alternate TiO2 systems when the combination of capacity at high current densities and cycle stability are considered, displaying a capacity of 95.4 mAh g−1 at 10 A g−1 and a 97.2% retention of capacity over 500 cycles at 1 A g−1.
date: 2019-11
date_type: published
publisher: ELSEVIER
official_url: https://doi.org/10.1016/j.ensm.2019.07.025
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1679308
doi: 10.1016/j.ensm.2019.07.025
lyricists_name: Brett, Daniel
lyricists_name: Shearing, Paul
lyricists_id: DBRET49
lyricists_id: PSHEA33
actors_name: Austen, Jennifer
actors_id: JAUST66
actors_role: owner
full_text_status: public
publication: Energy Storage Materials
volume: 22
pagerange: 441-449
pages: 9
citation:        Song, W;    Jiang, Q;    Xie, X;    Brookfield, A;    McInnes, EJL;    Shearing, PR;    Brett, DJL;         ... Riley, DJ; + view all <#>        Song, W;  Jiang, Q;  Xie, X;  Brookfield, A;  McInnes, EJL;  Shearing, PR;  Brett, DJL;  Xie, F;  Riley, DJ;   - view fewer <#>    (2019)    Synergistic storage of lithium ions in defective anatase/rutile TiO2 for high-rate batteries.                   Energy Storage Materials , 22    pp. 441-449.    10.1016/j.ensm.2019.07.025 <https://doi.org/10.1016/j.ensm.2019.07.025>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10111933/3/Shearing_ESM%20template.pdf