Binary PtBi decorated nanoporous gold (NPG-PtBi) electrocatalyst is specially designed and prepared for the anode in direct glucose fuel cells (DGFCs). By using electroless and electrochemical plating methods, a dense Pt layer and scattered Bi particles are sequentially coated on NPG. A simple DGFC with NPG-PtBi as anode and commercial Pt/C as cathode is constructed and operated to study the effect of operating temperatures and concentrations of glucose and NaOH. With an anode noble metal loading of only 0.45 mg cm (Au 0.3 mg and Pt 0.15 mg), an open circuit voltage (OCV) of 0.9 V is obtained with a maximum power density of 8 mW cm. Furthermore, the maximum gravimetric power density of NPG-PtBi is 18 mW mg, about 4.5 times higher than that of commercial Pt/C.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5155307 | PMC |
| http://dx.doi.org/10.1038/srep39162 | DOI Listing |
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