Table 2 Electrochemical properties of baseline Pt/C MEA obtained after two voltage recovery cycles and Pt/C-IL MEAs obtained after three voltage recovery cycles in fuel cell set-up
From: Revealing the role of ionic liquids in promoting fuel cell catalysts reactivity and durability
Baseline Pt/C | Pt/C-([C2mim]+[NTf2]−) | Pt/C-([C4mim]+[NTf2]−) | Pt/C-([C4dmim]+[NTf2]−) | |
|---|---|---|---|---|
OCV (V) | 0.905 | 0.933 | 0.948 | 0.929 |
Cell potential @ 0.8 A cm−2 | 0.675 | 0.680 | 0.705 | 0.658 |
Peak power density (W cm−2) | 0.831 | 0.856 | 0.909 | 0.804 |
Mass activity at 0.9 V (A g−1Pt) | 288 | 151 | 347 | 121 |
Specific activity at 0.9 V (μA cm2Pt) | 399 | 496 | 697 | 324 |
ECSA (m2 g−1) | 72.1 | 52.8 | 49.7 | 37.3 |
Proton conductivity (S m−1) | 1.93 | 3.95 | 2.34 | 2.04 |
Local O2 mass transport resistance (s cm−1) | 0.175 | 0.355 | 0.268 | 0.138 |
