Tuning the crystallinity of ZrO2 nanostructures derived from thermolysis of Zr-based aspartic acid/succinic acid MOFs for energy storage application

Scalable Synthesis of ZrO2 Nanoparticles through Imidazolic Precursor and Evaluation of its Energy Storage Performance

“…Figure 10(a) displays the CV curves of ZrO 2 //AC with subject to the several scan rates. As seen in Figure 10(a), the CV plots clearly reveal the existence of a battery‐kind of charge storage mechanism in fabricated ZrO 2 //AC ASC [44,45] . This result is good agreement with the observed Faradaic reaction of ZrO 2 in the three‐electrode system.…”

“…This is quite regular for the characteristics of battery-kind of electrochemical reactions ascribed to the electrode polarization of active materials and oxidization of water as well. [44,45] A superior capacitance properties of fabricated ZrO 2 //AC device is further supported by GCD analysis and corresponding curves are portrayed in Figure 10(b). The ZrO 2 //AC displays the stable GCD plots with slight deviation in the nature of discharge profiles, which may be due to the involvement of different charge storage mechanisms.…”

“…Even at higher sweep rate (100 mV s −1 ), outline of the CV curve demonstrates precisely same as noticed at low scan rate (5 mV s −1 ) except small shift in their peak potentials. This is quite regular for the characteristics of battery‐kind of electrochemical reactions ascribed to the electrode polarization of active materials and oxidization of water as well [44,45] …”

“…Therefore, surface charge carriers' contribution has declined due to weak interfacial contact between ZrO 2 and activated charcoal. [44] However, the present ZrO 2 //AC ASC discloses good electrochemical properties and rate capability in terms of specific capacitance, retention and cycling strength. This positive result carries forward towards spending ZrO 2 nanostructure as a positive electrode material for the energy sector industry with overwhelmed storage behaviour.…”

“…The power and energy density estimation has been carried out using following formula [44] $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr E={\rm \ }{{1}\over{2\times 3.6}}\left({C\Delta V}^{2}\right){\rm \ }\left(Whk{g}^{-1}\right)\hfill\cr}}$$$ $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr P={\rm \ }3600\times {{E}\over{\Delta t}}{\rm \ }\left(Wk{g}^{-1}\right)\hfill\cr}}$$$ …”