Sulfur-Doped TiO2 Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

Yan Zhang; Xinrui He; Jiahui Tang; Jing Jiang; Xiaobo Ji; Chao Wang

doi:10.1021/acsami.9b14597

Sulfur-Doped TiO₂ Anchored on a Large-Area Carbon Sheet as a High-Performance Anode for Sodium-Ion Battery

ACS Appl Mater Interfaces. 2019 Nov 27;11(47):44170-44178. doi: 10.1021/acsami.9b14597. Epub 2019 Nov 13.

Authors

Yan Zhang^{1

2}, Xinrui He¹, Jiahui Tang, Jing Jiang¹, Xiaobo Ji³, Chao Wang¹

Affiliations

¹ Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Electronic Science and Engineering , University of Electronic Science and Technology of China , Chengdu 611731 , Sichuan , China.
² Department of Chemistry , University College Cork , Cork T12 K8AF , Cork , Ireland.
³ School of Metallurgy and Chemical Engineering , Jiangxi University of Science and Technology , Ganzhou 341000 , Jiangxi , China.

PMID: 31674753
DOI: 10.1021/acsami.9b14597

Abstract

Well-tailored sulfur-doped anatase titanium dioxide nanoparticles anchored on a large-area carbon sheet are designed, where the in situ sulfur-doped titanium dioxide directly comes from titanium oxysulfate and the large-area carbon sheet is derived from glucose. When applied as an anode material for sodium-ion batteries, it exhibits an excellent electrochemical performance including a high capacity [256.4 mA h g^-1 at 2 C (1 C = 335 mA h g^-1) after 500 cycles] and a remarkable rate of cycling stability (100.5 mA h g^-1 at 30 C after 500 cycles). These outstanding sodium storage behaviors are ascribed to the nanosized particles (about 8-12 nm), good electronic conductivity promoted by the incorporation of carbon sheet and sulfur, as well as the unique chemical bond based on the electrostatic interaction.

Keywords: anode; carbon sheets; electrochemical performance; pseudocapacitance behavior; sodium-ion battery; sulfur doped; titanium dioxide.