Manganese and cobalt oxide films electrochemically co-deposited with gold nanoparticles have been studied for use as supercapacitors and oxygen-evolving catalysts, respectively.  The introduction of disorder into birnessite MnO2 thin films could increase their surface area for potassium ion uptake during the charging cycle.  Solutions of gold nanoparticles capped with cetyltrimethylammonium bromide (CTAB) were centrifuged and the nanoparticles were re-suspended in the MnSO4- and Co(NO3)2-based electrodeposition solutions.  UV-vis spectroscopy and TEM microscopy were used to monitor the nanoparticles' stability in the solutions.  The composite films were analyzed using electron microscopy techniques, X-ray diffraction, and cyclic voltammetry. The effects of gold nanoparticle incorporation on the films' conductivity, crystallinity, and electrochemical behavior will be discussed.

Enhanced energy storage via co-electrodeposition of gold nanoparticles in metal oxide thin films

243rd National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.