Observation on sodium p-toluenesulfonate-doped polypyrrole cathode for sodium ion battery. Issue 1 (20th September 2017)

• Record Type: Journal Article
• Authors: Hou, Hongying; Liao, Qishu; Duan, Jixiang; Liu, Song; Yao, Yuan
• Is Part Of: Surface innovations. Volume 6:Issue 1/2(2018:Mar.)
• Page Start: 56
• Page End: 62
• Publication Date: 2017-09-20
• Subjects: batteries -- energy storage -- polymers; Surfaces (Technology) -- Periodicals; Surfaces (Physics) -- Periodicals; 620.44
• DOI: 10.1680/jsuin.17.00036
• Languages: English
• ISSNs: 2050-6260

Abstract

Abstract : Sodium p -toluenesulfonate (TsONa)-doped polypyrrole (PPy) was synthesized as the cathode active material of sodium ion battery by way of facile one-step electrodeposition on iron (Fe) foil. The micro-morphology and micro-structure of as-synthesized TsONa/PPy/iron cathode were characterized in terms of scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction; furthermore, the electrochemical Na-storage activity of TsONa/PPy/iron cathode was investigated by methods of, galvanostatic charge/discharge, cyclic voltammetry and alternating current impedance. As expected, the cauliflower-like TsONa-doped PPy particles tightly combined with the surface of the iron foil without any additional polymer binders; and also, the resultant TsONa/PPy/iron cathode delivered satisfactory electrochemical performances, mainly attributed to high Na-storage activity of PPy matrix and high electronic conductivity induced by doping of TsONa. For example, the reversible discharge capacity of TsONa/PPy/iron cathode remained about 98 mAh/g after at least 50 cycles and the corresponding coulombic efficiency was 92%, indicating high cyclic stability and reversibility of TsONa/PPy/iron cathode for sodium ion battery.