Bifunctional Tailoring of Platinum Surfaces with Earth Abundant Iron Oxide Nanowires for Boosted Formic Acid Electro-Oxidation

Table 1

The real Pt surface areas calculated based on the (H_ads/_des) peaks (A1 and A2) utilizing a reference value of 210 µC·cm⁻² and based on the PtO ⟶ Pt reduction peak (A) utilizing a reference value of 420 µC·cm⁻².

Electrode	A1 (100)/cm^2	A2 (111)/cm^2	(A1 + A2)/cm^2	(A1 : A2)	A (PtO reduction)/cm^2
Bare Pt	0.032	0.020	0.052	1.60	0.064
FeOx/Pt	0.025	0.016	0.041	1.56	0.057
a-FeOx/Pt (−0.5 V)	0.026	0.013	0.039	2.00	0.073
a-FeOx/Pt (−0.9 V)	0.032	0.028	0.060	1.14	0.077
a-FeOx/Pt (−1.3 V)	0.030	0.028	0.058	1.07	0.066