Revealing the electrochemical performance of a manganese phosphite/RGO hybrid in acidic media

Abstract

Transition metal phosphorous-based materials are considered as ideal candidate for energy storage due to their robustness and durability. In this report, we present manganese phosphite, Mn11(HPO3)8(OH)6, an interesting inorganic material...

Porous polyoxotungstate/MXene hybrid films allowing for visualization of the energy storage status in high-performance electrochromic supercapacitors

“…S5†). 59 In addition, the O 1s spectrum of the NW@MXene/P 2 W 18 composite is shown in Fig. 4e, and the fitted peaks at 529.0, 530.0, and 532.0 eV can be attributed to the Ti–O, Ti–C–O X , and Ti–C–(OH) X species, respectively.…”

“…The terms involved in the EIS are R s , R ct , W , and CPE, representing equivalent series resistance, charge transfer resistance, Warburg impedance, and a constant phase element, respectively. 59 The intercept of the Nyquist plot with the real axis ( Z ′) provides equivalent series resistance, that is, the combination of the resistance of the electrolytic ion, the resistance of the electrode and the contact resistance existing between the interface of the electrode and the active substance. The charge transfer resistance ( R ct ) is the resistance generated at the interface between the active material-coated electrode and electrolyte.…”

A SnO2/MXene hybrid nanocomposite as a negative electrode material for asymmetric supercapacitors

“…30 The following equations are involved to calculate the resultant specific capacitance, energy density and power density. 31 C sp = I m /(d V /d t )Energy density (E.D) = C sp × (Δ V ) 2 /7.2Power density (P.D) = (E.D × 3600)/Δ t where I m , (d V /d t ), Δ V and Δ t are the mass normalized current density, slope of the discharge curve, operating potential window and discharge time, respectively.…”