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