ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

TiS₂ as negative electrode material for sodium-ion supercapattery

Li-Ping Zhao, Gang Liu, Peng Zhang, Li-Qun Sun, Li-Na Cong, Wei Lu, Qi-Qi Sun, Hai-Ming Xie, and Hong-Yu Wang

Jilin Engineering Normal University, Changchun, People’s Republic of China

E-mail: xiehm136@nenu.edu.cn

Abstract: Titanium disulfide (TiS₂) was adopted as a negative electrode material for the asymmetric sodium-ion supercapattery of TiS₂/activated carbon using Na⁺-based organic electrolytes. This type of supercapattery possesses a working voltage as high as 3 V. The physical properties of the negative electrode were characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical performance tests revealed that the supercapattery had a relatively high rate performance and good cycle stability, displaying 77% capacity retention after 1000 cycles at a current density of 0.2 A g⁻¹.

Keywords: Titanium disulfide ; Activated carbon ; Sodium ion ; Supercapattery 

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-019-00812-y

Chemical Papers 73 (10) 2583–2589 (2019)