Electrochemical Performance Case Study

Electrochemical Performance.
To evaluate the electrochemical behaviors of the highly open framework of the as synthesized LTH on nickel foam electrodes NCA-L-@NF, NCA-L@G-NF and NCA-L@ BG-NF with three different feeding mole ratios , which is the best morphological foundation for fast redox reaction and charge accumulation, its potential application in high-performance supercapacitor has been investigated by cyclic voltammetry (CV), galvanostatic charge-discharge and electrochemical impedance (EIS) measurements in 6 M KOH solution. Figure 7(a), Shows CV curves of NCA-L-@NF, NCA-L@G-NF and NCA-L@ BG-NF with three different feeding mole ratios are recorded at scan rates of 5mVs-1. An obvious pair of redox peaks in the potential range of 0 - 0.6 …show more content…
15,41In comparison NCA-L-@NF and NCA-L@G-NF, the NCA-L@ BG-NF-3 possess larger enclosed CV area. Signifying better capacitive behavior. Furthermore, the integral area of CV curves increased in order of NCA-L@ BG-NF-3> NCA-L@ BG-NF-1> NCA-L-@NF> NCA-L@ BG-NF-2> NCA-L@G-NF suggesting that the average capacitance of NCA-L@ BG-NF-3 was the …show more content…
As can be seen curves of NCA-L-@NF, NCA-L@G-NF and NCA-L@ BG-NF with three .different mole feeding ratios ,the charge discharge curves were not identical linear, which further confirmed that Faradic reaction proceeding during process.18,42 The discharge time of NCA-L@ BG-NF-3 was the longest .implying the best charge storage performance.At a current density of 6 A/g,the specific capacitances were calculated to be 3996 F/g NCA-L@ BG-NF-3,3792 F/g NCA-L@ BG-NF-1,3780 F/g NCA-L-@NF, NCA-L@ BG-NF-2,3108F/g NCA-L@G-NF.As shown the the figure (7c) the superior electrochemical performance is due to the synergetic effect between conductive GO or BGN and NCA-L-NF when compared with pure NCA-L-NF. 9 It may be attributed to GN/BGN in the electrode convey a conductive network for electron transportation during redox reaction.because of the presence of numerous nanochannels, also the unique morphology of BGN–LTH acts as a perfect reservoir to facilitates enhanced contact, diffusion as well as penetration of OH-ions for highest redox processes for charge storage.43Besides these the noteworthy increase in their electrochemical activity is due to bromination of GO which leads to the reduction. It is well-known that BGN is exceptionally strategic to serve as a good electronic conductor for the redox