Low-cost and high energy density asymmetric supercapacitors based on polyaniline nanotubes and MoO₃ nanobelts

Abstract

Asymmetric supercapacitors (ASCs) with high energy density are assembled based on the pseudocapacitance of both electrodes, which use polyaniline (PANI) nanotubes as positive electrodes and MoO3 nanobelts as negative electrodes in a 1 M H2SO4 aqueous electrolyte.

Fabrication of γ-MnS/rGO composite by facile one-pot solvothermal approach for supercapacitor applications

“…Before the electrochemical test, the as-prepared electrode was soaked overnight in a saturated electrolyte solution. Electrochemical measurements were conducted on an Autolab PGSTAT302N electrochemical workstation (Metrohm AG, Switzerland) in polysulfide electrolyte (1 M KOH/0.5 M Na 2 S$9H 2 O/ 0.5 M Sulfur powders) with platinum as counter electrode and Ag/ AgCl as reference electrode [26].…”

Hierarchical polypyrrole based composites for high performance asymmetric supercapacitors

“…Therefore, some researchers have turned their attentions to other negative materials with facile, scalable, and binder-free preparation technology, low cost, environmentally benign nature, and high capacitance. For instance, the asymmetric supercapacitors based on pseudocapacitance materials, such as Co(OH) 2 //VN, [16] M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 PANI//MoO 3 [17] and VN-MWCNT//MnO 2 -MWCNT, [18] can effectively enhance the capacitance and thus obviously improve the energy density.…”

Porous Dual‐Layered MoOx Nanotube Arrays with Highly Conductive TiN Cores for Supercapacitors

“…According to Equation (1), the specific capacitances of TiN, MoO x / TiN-10 s, and MoO x /TiN-30 s are calculated to be 21, 97, and 165 mF cm MoO x /TiN nanocomposite electrode drops after more MoO x deposition, as suggested by the EIS results in Figure 3 c. In fact, the larger the amount of MoO x loaded, the lower the conductivity. Our results reveal a special feature of MoO x deposited on highly conductive TiN NTAs, which can be charged/discharged at a high current density of approximately 70 A g À1 with an areal capacitance of 58 mF cm À2 (gravimetric capacitance 193 F g À1 ), which is much bigger than the values observed from many other TMO-based electrodes, such as b-MnO 2 nanorod@nanoflake (Ni, Co, Mn) oxides, [19] g-FeOOH nanosheets, [20] MoO 3 nanobelts, [21] and Co 3 O 4 /Co 3 (VO 4 ) 2 hybrid nanorods. [22] An important performance gauge for SCs is the long-term cycle life.…”