Hybrid electrodes composed of graphitic carbon nitride and zeolitic imidazolate framework‐67 for supercapacitor applications

Abstract

Carbon-based materials with porous and layered forms have irreplaceable worth in renewable energy storage applications, especially after the graphene discovery. Among these materials, graphitic carbon nitride (g-C 3 N 4 ) shows great promise by including polymeric layers accentuate owing to its costeffective yet eco-friendly chemistry. Zeolitic imidazolate frameworks (ZIFs) also draw attention to possessing high surface area owing to porous structure. Herein, we present a rational co-synthesis of these materials for the fabrication of high-performance supercapacitors (SCs). G-C 3 N 4 @ZIF-67 hybrid electrode demonstrated a high specific capacitance of 657 F g À1 at the current density of 1 A g À1 . The specific capacitance of pure g-C 3 N 4 and ZIF-67 were 446 and 560 F g À1 at the same current density. Moreover, the capacitances only decay at 6%, 5%, and 10% after 3500 cycles for g-C 3 N 4 , ZIF-67, and g-

Redox electrolyte mediated performance enhancement in aqueous zinc ion hybrid supercapacitors composed of spinel BaFe2O4 and cubic Cu2O

“…2a) was conducted to designate both the structure and phase characteristics of the samples. In The Debye-Scherer model (D-S), eqn (6), was employed to determine the median crystalline sizes of the particles based on the XRD measurements. The data was fitted by the Gaussian model.…”

“…As a prospective environmental contender owing to their rapid charge/discharge kinetics, supercapacitors (SCs) play a vital part in the impending energy revolution because of their environmental friendliness, exceptionally high PD, and superior cycling durability. [1][2][3][4][5][6][7][8][9][10] SCs are typically classified into three categories based on the process by which they store charge: electrostatic double-layer SCs, pseudocapacitors, and battery-type hybrid SCs.…”

Unlocking the Potential of Bismuth‐Based Materials in Supercapacitor Technology: A Comprehensive Review

“…SC cell comprises two electrodes and an electrolyte. The two electrodes are divided by a separator that grants for the movement of ions while preventing direct contact [8,10–11] . Various electrodes and electrolyte materials are utilized in the fabrication of SCs.…”

“…The two electrodes are divided by a separator that grants for the movement of ions while preventing direct contact. [8,[10][11] Various electrodes and electrolyte materials are utilized in the fabrication of SCs. The employment of electrodes with an increasing the voltage will shorten the life of the capacitor.…”

Rational Integration of ZIF-8 and BiPO4 for Energy Storage and Environmental Applications

“…In particular, graphene discovery highlighted the nanocarbon-based material’s irreplaceable impact on energy storage. ,− By this time, there have been many studies on the singly or doped effect of activated carbon (AC), graphene, graphene oxide, carbon nanotubes (CNTs), graphical carbon nitride (g-C 3 N 4 ), carbon dots (CDs), and carbon quantum dots. − Transition metal oxides, metal sulfides, polyoxometalates, phosphates, carbonates, chalcogenides, metal–organic frameworks (MOFs) conductive polymers, and their compounds have been investigated as adequate materials for energy storage applications, and they have a domain in other areas such as catalysts, sensors, drug delivery, gas storage/separation, and other types of energy storage/conversion systems such as batteries and fuel cells. − Chiefly, metal oxides including Co 3 O 4 , Fe 2 O 3 , V 2 O 5 , RuO 2 , ZnO, MnO 2 , NiO, SnO 2 , TiO 2 , CuO, Bi 2 O 3 , etc. with high specific capacitance values and high pseudocapacitive behaviors are commonly used. ,− Among the available metal oxides, Co 3 O 4 and RuO 2 come to the forefront with magnificent electrochemical reversibility and high theoretical specific capacitance, as well as remarkable cycling stability . However, the steep price and toxic nature of these materials limit their utilizability. , To sum up, the formation of ideal SCs requires reasonably priced and environmentally friendly materials with high capacitance, besides high energy and power densities.…”