Synthesis of Highly Sulfonated Poly(arylene ether) Containing Multiphenyl for Proton Exchange Membrane Materials

Table 2

Proton conductivity and stability of SP1 membranes.

Sample	Proton conductivity (30°C) (mS/cm)		Proton conductivity (95% RH) (mS/cm)		Oxidative stability residual weight (%)	Hydrolytic stability residual weight (%)
	40% RH	95% RH	50°C	80°C
SP1-0.39	—	—	—	—	100	99
SP1-2.22	1.91	47.7	84.8	143	91	82
SP1-2.80	6.41	83.2	151	222	85	73
SP1-2.90	7.05	71	135	228	—	—
Nafion 117	5	64	60	106	—	—

After heating in Fenton reagent at 80°C for 1 h.
After heating in water at 140°C for 24 h.
No data.
Dissolved in reagent.