Graphene-Rich Wrapped Petal-Like Rutile TiO2 tuned by Carbon Dots for High-Performance Sodium Storage

Yan Zhang; Christopher W Foster; Craig E Banks; Lidong Shao; Hongshuai Hou; Guoqiang Zou; Jun Chen; Zhaodong Huang; Xiaobo Ji

doi:10.1002/adma.201601621

Graphene-Rich Wrapped Petal-Like Rutile TiO₂ tuned by Carbon Dots for High-Performance Sodium Storage

Adv Mater. 2016 Nov;28(42):9391-9399. doi: 10.1002/adma.201601621. Epub 2016 Aug 30.

Authors

Yan Zhang¹, Christopher W Foster², Craig E Banks², Lidong Shao³, Hongshuai Hou¹, Guoqiang Zou¹, Jun Chen¹, Zhaodong Huang¹, Xiaobo Ji¹

Affiliations

¹ College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
² Faculty of Science and Engineering, Manchester Metropolitan University, Manchester, M1 5GD, UK.
³ Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, Shanghai University of Electric Power, 2103 Pingliang Road, Shanghai, 200090, P. R. China.

PMID: 27573868
DOI: 10.1002/adma.201601621

Abstract

Carbon dots inducing petal-like rutile TiO₂ wrapped by ultrathin graphene-rich layers are proposed to fabricate superior anodes for sodium-ion batteries, featuring high-rate capabilities and long-term cyclelife, benefiting from promoted electron transport and a shortened Na⁺ diffusion length. High capacities of 144.4 mA h g^-1 (at 837.5 mA g^-1 ) after 1100 cycles and 74.6 mA h g^-1 (at 3350 mA g^-1 ) after 4000 cycles are delivered outstandingly.

Keywords: carbon dots; graphene-rich; petal-like TiO2; sodium-ion batteries.