Zeolitic imidazolate framework-L-assisted synthesis of inorganic and organic anion-intercalated hetero-trimetallic layered double hydroxide sheets as advanced electrode materials for aqueous asymmetric super-capacitor battery

Hierarchical Ni(OH)2–MnO2hollow spheres as an electrode material for high-performance supercapacitors

“…S2b, † the Ni 2p spectrum can be divided into four peaks, of which two are the result of shake-up satellites and are labelled Sat, while the other two peaks at 855.8 eV (Ni 2p 3/2 ) and 873.5 eV (Ni 2p 1/2 ) are assigned to Ni 2+ . 21,22 The Mn 2p spectrum (Fig. S2c †) presents two peaks at 643.1 and 653.8 eV which correspond to Mn 2p 3/2 and Mn 2p 1/2 , respectively.…”

Nickel–cobalt bimetallic tungstate decorated 3D hierarchical porous carbon derived from lignin for high-performance supercapacitor applications

“…where i p , n, A, and C * OH À stand for the peak current (A), the number of electrons transferred, the electrode area (cm 2 ), and the concentration of OH À (mol cm À3 ), respectively. On the basis of eqn (9) and the slopes of the tted lines from Fig. 6(a) and S7, † the D À OH values were acquired and are summarized in Table S4.…”

“…Transition-metal oxides (TMOs) and transition-metal hydroxides, 8,9 such as RuO 2 , [10][11][12] Co 3 O 4 , 13,14 NiO, 15,16 Fe 2 O 3 / FeO, 17,18 MnO 2 , [19][20][21] and Co(OH) 2 , 22 have shown great promise as pseudocapacitance electrode materials. Among the various reported TMOs, transition-metal tungstates (MWO 4 ) are regarded as having excellent potential for use in catalysis, 23 scintillation crystal acoustic bers, sensors, 24 and supercapacitors 25 due to their varying morphologies, simple preparation methods, multi-function behavior, and stable performance.…”

Ultrathin Nanosheets NiCo2O4/C Hollow Microtube Composites with Superior Performances for Supercapacitors

“…Well-defined redox peaks exist within potential window À0.2 -0.5 V. It is of significant difference from the CV curve of the EDLC with a quasi-rectangular shape. The redox peaks are mostly owing to Faraday oxidation-reduction reactions of M-O and M-O-OH (M is Ni or Co), which are shown in Equation ( 9) and (10). The oxidation peaks move to higher potential and the reduction peaks move to lower potential along with an increase of SR, respectively.…”