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Mesoscale morphological control of electrodeposited manganese dioxide films

Version 2 2024-06-18, 00:02
Version 1 2017-05-16, 14:22
journal contribution
posted on 2024-06-18, 00:02 authored by AJ Gibson, RC Burns, MF Dupont, SW Donne
Multilayered films of hybrid manganese dioxide have been synthesised in an anodic pulse deposition study with the addition of phosphotungstic acid, H < inf > 3 < /inf > PW < inf > 12 < /inf > O < inf > 40 < /inf > (PW) to an acidified MnSO < inf > 4 < /inf > solution. These hybrid materials exhibit tuneable layered morphologies, which is not present in material synthesised in the absence of PW. Cyclic voltammetry analyses have been performed in situ on single pulse thin film depositions synthesised in the presence of varying concentrations of PW, where minor amounts of PW improves the cycle stability of the material, however larger concentrations lead to a degradation in material performance. In situ electrochemical analysis shows that the incorporated PW clusters do not affect material activity, however they do play a role in defining both meso- and micro-structure.

History

Journal

Electrochimica Acta

Volume

170

Pagination

343-352

Location

Amsterdam, The Netherlands

ISSN

0013-4686

eISSN

1873-3859

Language

English

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2015, Elsevier

Publisher

PERGAMON-ELSEVIER SCIENCE LTD