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Influence of Cu on the Performance of Tuberose Architecture of Strontium Hydroxide Thin Film as a Supercapacitor Electrode
Author(s) -
Raut Shrikant S.,
Parveen Shama,
Sankapal Babasaheb R.,
Pandey S. N.
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201801023
Subject(s) - cyclic voltammetry , materials science , orthorhombic crystal system , electrochemistry , electrolyte , electrode , raman spectroscopy , doping , supercapacitor , chemical bath deposition , crystallite , chemical engineering , strontium , hydroxide , analytical chemistry (journal) , crystal structure , thin film , nanotechnology , chemistry , crystallography , organic chemistry , metallurgy , physics , optoelectronics , engineering , optics
A simple, economical successive ionic layer adsorption and reaction (SILAR) method has been used for synthesizing 1, 2 and 3 at.% copper‐doped strontium hydroxide over a stainless‐steel (SS) substrate. X‐ray diffraction reveals the orthorhombic crystal structure of polycrystalline Cu‐doped Sr(OH) 2 . FTIR and Raman analyses explore the chemical bond analysis of the active material. The morphology of the Cu‐doped Sr(OH) 2 was analyzed by using SEM. This shows novel hierarchical‐branched tuberose with flakes. The energy‐dispersive X‐ray spectroscopy (EDAX) also confirms the doping of Cu into Sr(OH) 2 . The electrochemical properties have been investigated by using cyclic voltammetry (CV) and galvanostatic charge−discharge measurements. It has been perceived that doping clearly affects the supercapacitive behavior. The specific capacity of the 3 at.% Cu‐doped Sr(OH) 2 film electrode exhibits a maximum specific capacity of 817 C g −1 at 0.4 mA cm −1 in 1 M Na 2 SO 4 electrolyte, but has a low cycle stability. The 2 at.% Cu‐doped sample shows high cycle stability by retrieving 71 % of its capacity after 5000 cycles. The relationship between the doping concentration and supercapacitive behavior has also been discussed. The good capacitive behavior and cycle stability of the Cu‐doped Sr(OH) 2 gives the new perspective for the flexible electrode material, which can be used in the near future as an energy storage material.