Surface engineering of nanotubular ferric oxyhydroxide “goethite” on platinum anodes for durable formic acid fuel cells

Tailor-designed nanowire-structured iron and nickel oxides on platinum catalyst for formic acid electro-oxidation

“…It is also interesting to note the competitive performance of the FeO x /NiO x /Pt catalyst, especially after activation, for the FAOR and CO tolerance when compared to the literature data for this reaction (see Table 2). 41,46,56–60…”

“…Next, the deposited iron was activated in 0.2 mol L −1 NaOH aqueous solution at −0.5 V for 10 min, where iron oxide nanorods (nano-FeO x ) were formed. 45,46 To easily recognize the sequencing of the different catalytic ingredients and the post-treatment of the catalyst, abbreviations related to their developments were assigned. For instance, the a-FeO x /NiO x /Pt catalyst referred to the direct deposition of nano-NiO x onto the bare-Pt substrate followed by its passivation and activation.…”

“…and ternary catalysts such as PtM1M2 (M1M2 = RuAu, 34 PdCu, 35 CuFe, 36 SnBi, 6 AuCu 37 and BiPd 7 ). Furthermore, when modifying Pt surfaces with transition metal oxide nanostructures (MO x ), such as NiO x , 38,39 CoO x , 40 TiO x , 41 MnO x , 42,43 Cu 2 O, 44 FeO x , 45,46 etc. , the catalytic improvement achieved toward the FAOR was motivated by the so-called “bi-functional effect”, where the required oxygen atmosphere could easily be supplied by non-precious metal/s to facilitate the CO stripping at low overpotentials.…”

A “Special” Solvent to Prepare Alloyed Pd2Ni1 Nanoclusters on a MWCNT Catalyst for Enhanced Electrocatalytic Oxidation of Formic Acid

“…Liquid fuel cells are booming related to achieving carbon neutrality [ 1 , 2 , 3 , 4 , 5 ]. Direct formic acid fuel cell (DFAFC) is a kind of important fuel cell and attracts much attention [ 6 , 7 , 8 ]. However, low conversion efficiency of formic acid has always been a difficult problem.…”

Boosted formic acid electro-oxidation on platinum nanoparticles and “mixed-valence” iron and nickel oxides

“…4) employing a Pd catalyst). 5–7 In fact, FA stands out among all other potential hydrogen carriers as a clean, nontoxic, nonflammable, stable, and renewable energy resource with a high energy density (2086 W h L −1 ), 6,8 low fuel crossover rate through polymeric Nafion membranes, high theoretical electromotive force (open circuit voltage ∼1.48 V), and low-cost for a liquid organic molecule under atmospheric conditions. 9–11 As such, FA is considered as an ideal power source for portable applications, vehicles, and small power generation devices.…”