Table 2.

Properties of some selected commercially available GDLs according to manufacturer information

Manufacturer/Series	Type	Hydrophobic treatment	MPL	Thickness [μm]	TP resistance [mΩ cm−2]	IP resistance/conductivity	TP air permeability
Freudenberg (B. Dinh et al., 2018a) H series (Yang et al., 2020a)	Carbon paper	Some	Yes	141–230a	5–10	R = 0.6–1.1 Ω	0.6–90 sb IP: 1.0–3.1 μm2
Sigracet BC series (Chen et al., 2020c; Kim et al., 2016)	Carbon paper	Yes (5 wt % PTFE)	Yes (23 wt % PTFE)	235–325	7.5–12	σ = 145–225 S cm−1	0.2–1.5 cm3cm−2 s−1c 5–15 · 10−12 m2 IP: 1.4–2.7 μm2
AvCarb (Xing et al., 2021)	Carbon paper	Some (PTFE)	N/A	184–270	<14.5	N/A	3.5–18 s (100 cm-3)d
FuelCellsEtc ELAT (formerly E-TEK) (Chang et al., 2009)	Carbon cloth	Some	Some	406–490	0.17–0.34 (@ 181.4 kg load)	N/A	2.156 sb 0.104 L (m−2 s−1 Pa−1)
QuinTech (Junge Puring et al., 2021)	Carbon cloth	Some	Some	360–410	<5 to <13	N/A	<10 - < 55d
Toray TGP-H (Aeshala et al., 2012; Albo and Irabien, 2016; Kim et al., 2016)	Carbon paper	N/A	N/A	110–370	ρ = 80 mΩ cm	R = 4.7–5.8 mΩ cm−2	1,500–2,500 mL mm (cm−2 h−1 mmAq−1)
Sterlitech Aspire (B. Dinh et al., 2018a)	ePTFE	No	No	76–305	Insulating	Insulating	0.07–8.0 ft3 (min−1 ft−2) @ 125 Pa

TP: through-plane, IP: in-plane.

^a@ 1 MPa.

^baccording to ISO5636-5.

^caccording to ISO9237.

^daccording to Gurley.