Pt-based nanomaterials (NMs) are commonly deposited onto glassy carbon electrodes through simple routes, but their active sites are usually limited. To overcome this, template-assisted electrodeposition of Pt NMs directly onto the surfaces of conductive substrates (for example, indium tin oxide – ITO) has been applied.

Although CFMEs decorated with NMs or organic compounds are popular in electrochemical biosensing due to their small size, high surface-to-volume ratio, and ease in functionalization, their use in fuel cells has not been widely realized.

The method developed by Huan-Tsung Chang and co-workers from the National Taiwan University, Taipei, involves constructing multiple Te/PtCFMEs in a configuration of one working electrode. The team believes that this will not only reduce the cost of fabrication of DMFCs, but also provide a significant enhancement in current density and durability.

To further reduce the cost of electrodes used in DMFC’s, the group will be working on the preparation of multiple metallic nanonetworks onto CFMEs without noble metals as anodic catalysts in the future. “We are also interested in the development of green synthetic approaches for the fabrication of bimetallic multiple nanonetworks of Te in conjunction with other low-cost metals (such as Ni or Co) that provide high current density of DMFCs,” explained Chang.

More information can be found in the journal Nanotechnology.