ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
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
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.
Chemical Papers 73 (10) 2583–2589 (2019)