Electrodeposited PbO2 thin film as positive electrode in PbO2/AC hybrid capacitor

Effect of temperature on the growth of α-PbO2 nanostructures

“…In these conditions, PbO 2 NWs consist of a mixture of ␣ and ␤ phases, confirming literature data relative to electrodeposition of PbO 2 films [13,14]. Moreover, mixture of ␣ + ␤ NWs was also obtained at room temperature by Perret et al [15] was also obtained in nitrate-based bath at more acidic pH and high current density [16]. Recently, it has been shown that it is possible to obtain a compact film of pure ␣-PbO 2 from an aqueous solution of methanesulfonic acid by galvanostatic deposition at 10 • C, while at 22.5 • C an ␣ + ␤ mixture was deposited [17].…”

Electrocatalytic activity of Ce-PbO2/C anode for acid red B reduction in aqueous solution

“…In addition, we could see that the oxidation peak potential of PbO2/C electrode was 1.746 V and the peak current is 1.997 e −2 A. This result was similar to the conclusions of document 28 [28]. However, the Ce-doped electrode had lower oxidation peak potential and higher current.…”

General Properties of Electrochemical Capacitors

“…These asymmetric prototypes showed an ESR as low as 0.12 cm 2 and an RC time constant of 0.36 s, which is comparable to that obtained for a symmetric carbon supercapacitor. Recently, Gao and coworkers [202] also fabricated a PbO 2 /AC asymmetric capacitor in which electrodeposited thin films of PbO 2 on Ti/SnO 2 substrates were used as the positive electrode and high-surface-area AC as the negative electrode in H 2 SO 4 . The asymmetric device, when galvanostatically cycled between 0.8 and 1.8 V, showed specific capacitances of 79.9 and 74.1 F g −1 at current densities of 0.75 mA cm −2 (1.2 C-rate) and 10 mA cm −2 (16 C-rate), respectively; which correspond to specific energies of 26.5 and 17.8 Wh kg −1 (active material basis), respectively.…”