TY - JOUR
T1 - Structural properties and supercapacitive performance evaluation of the nickel oxide/graphene/polypyrrole hybrid ternary nanocomposite in aqueous and organic electrolytes
AU - Golkhatmi, Sanaz Zarabi
AU - Sedghi, Arman
AU - Miankushki, Hoda Nourmohammadi
AU - Khalaj, Maryam
PY - 2021/1/1
Y1 - 2021/1/1
N2 - Recently, hybrid supercapacitors have attracted tremendous attention as promising energy storage and conversion devices due to their excellent energy density and high power density. In the present work, a novel pioneering hybrid ternary nanocomposite of NiO/Gr/PPy was synthesized by a low-cost co-precipitation method, followed by heat treatment and in-situ chemical polymerization. The as-synthesized nanocomposite was drop-cast on a modified Cu current collector to enhance the supercapacitive performance and stability in the electrolyte. The results of electrochemical characterization in 6 M KOH revealed the high specific capacitance and energy density of 970.85 F g−1 and 33.71 Wh kg−1 at 1 A g−1, respectively. This can be attributed to the synergic effect and hybrid performance of NiO, Gr, and PPy. Moreover, a full symmetric cell was assembled by using this hybrid ternary nanocomposite and evaluated in TEA-BF4/AN. The results showed the high specific capacitance and energy density of 66.17 F g−1 and 36.76 Wh kg−1 within the 2 V potential window, respectively.
AB - Recently, hybrid supercapacitors have attracted tremendous attention as promising energy storage and conversion devices due to their excellent energy density and high power density. In the present work, a novel pioneering hybrid ternary nanocomposite of NiO/Gr/PPy was synthesized by a low-cost co-precipitation method, followed by heat treatment and in-situ chemical polymerization. The as-synthesized nanocomposite was drop-cast on a modified Cu current collector to enhance the supercapacitive performance and stability in the electrolyte. The results of electrochemical characterization in 6 M KOH revealed the high specific capacitance and energy density of 970.85 F g−1 and 33.71 Wh kg−1 at 1 A g−1, respectively. This can be attributed to the synergic effect and hybrid performance of NiO, Gr, and PPy. Moreover, a full symmetric cell was assembled by using this hybrid ternary nanocomposite and evaluated in TEA-BF4/AN. The results showed the high specific capacitance and energy density of 66.17 F g−1 and 36.76 Wh kg−1 within the 2 V potential window, respectively.
KW - Current collector
KW - Graphene (Gr)
KW - Hybrid ternary nanocomposite
KW - Nickel oxide (NiO)
KW - Polypyrrole (PPy)
KW - Supercapacitor
UR - http://www.scopus.com/inward/record.url?scp=85092357516&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2020.118950
DO - 10.1016/j.energy.2020.118950
M3 - Article
AN - SCOPUS:85092357516
VL - 214
JO - Energy (the International Journal)
JF - Energy (the International Journal)
SN - 0360-5442
M1 - 118950
ER -