Polyoxometalates (POMs), anionic metal–oxide clusters, can participate in fast reversible multielectron-transfer reactions, making them potential candidates for energy storage applications. POM−based hybrid electrodes with nanocarbons have been reported for hybrid supercapacitors (SCs). However, POMs have poor electrical conductivity, which can have a detrimental influence on specific capacitance and cycling stability. By combining POMs with conductive metal (M0) nanoparticles (NPs), it is hoped to promote desirable synergistic properties, while enhancing the electrical double layer capacitance of nanocarbons. Hence, this work presents an optimized green synthetic protocol to obtain M0 NPs stabilized with POMs, with low polydispersity and high stability. Their properties are characterized using electron microscopy (Fig. 1), X-ray diffraction, X-ray photoelectron spectroscopy, IR spectroscopy and electrochemical methods. Finally, we present the incorporation of the M0 NPs with POMs and activated carbon to create a hybrid tri-component composite electrode with potential energy storage applications.

Polyoxometale-stabilized metal nanoparticles: Potential candidates for energy storage applications

ACS Spring Meeting 2021

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