The galvanic exchange between Mn2 +ions and electrodeposited porous PbO2was studied to produce a porous oxide whose lower conductivity prevented its direct oxygen bubble-templated anodic deposition. Immersion of PbO2layers in acid acetate solutions of Mn2 +led to the formation of amorphous MnOxshell onto PbO2. Due to its amorphous nature, MnOxcould not be proved to be MnO2by XRD. However, MnOxwas cathodically stripped at the same potential as MnO2. The deposition of the MnOxshell onto PbO2enhanced the capacity of the porous electrodes.
Conversion of porous PbO2layers through galvanic displacement reaction with Mn2 +ions / Comisso, Nicola; Cattarin, Sandro; Guerriero, Paolo; Mattarozzi, Luca; Musiani, Marco*; Verlato, Enrico. - In: ELECTROCHEMISTRY COMMUNICATIONS. - ISSN 1388-2481. - ELETTRONICO. - 73:(2016), pp. 59-62. [10.1016/j.elecom.2016.10.018]
Conversion of porous PbO2layers through galvanic displacement reaction with Mn2 +ions
Verlato, Enrico
2016
Abstract
The galvanic exchange between Mn2 +ions and electrodeposited porous PbO2was studied to produce a porous oxide whose lower conductivity prevented its direct oxygen bubble-templated anodic deposition. Immersion of PbO2layers in acid acetate solutions of Mn2 +led to the formation of amorphous MnOxshell onto PbO2. Due to its amorphous nature, MnOxcould not be proved to be MnO2by XRD. However, MnOxwas cathodically stripped at the same potential as MnO2. The deposition of the MnOxshell onto PbO2enhanced the capacity of the porous electrodes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
