TY - JOUR
T1 - Influences of a bipolar membrane and an ultrasonic field on alkaline water electrolysis
AU - Hung, Chi Yuan
AU - Li, Sheng De
AU - Wang, Cheng Chien
AU - Chen, Chuh Yung
N1 - Funding Information:
The financial support of the Ministry of Economic Affairs (TDPA: 96-EC-17-A-05-S1-0014) and the National Science Council of the Republic of China (NSC96-2221-E-006-100-MY3, NSC100-3113-E-024-001-CC2 and NSC100-2221-E-006-056-MY3) are gratefully acknowledged.
PY - 2012/2/1
Y1 - 2012/2/1
N2 - The energy efficiency of alkaline water electrolysis improved by using the polyvinylidene fluoride-grafted 2-methacrylic acid 3-(bis-carboxymethylamino)-2-hydroxyl-propyl ester bipolar membrane (PVDF-g-G-I BM) as diaphragms with an ultrasonic field (USF) has been explored in this study. The PVDF-g-G-I BM was prepared by the plasma-induced polymerization method. The method utilized the porous PVDF membrane as substrates, and G-I monomer was grafted onto both sides of the PVDF membrane after plasma treatment. The performance of the PVDF-g-G-I BM was demonstrated by measuring the cell voltage for the cell operated with or without an USF. According to steady-state E-I curves, the order of the cell voltage for alkaline water electrolysis was the DuPont commercial membrane>Water>PVDF-g-G-I BM under the same working condition. The PVDF-g-G-I BM was found to function well as a diaphragm in alkaline water electrolysis. In comparison with Water without an USF, the H 2 production efficiency by using the PVDF-g-G-I BM was improved 5-16/4% and an energy saving of ca. 15-20% (13-18%)/8-12% (6-10%) can be reached in alkaline water electrolysis at 0.5M (1.0M) NaOH for the cell operated with/without an USF, respectively.
AB - The energy efficiency of alkaline water electrolysis improved by using the polyvinylidene fluoride-grafted 2-methacrylic acid 3-(bis-carboxymethylamino)-2-hydroxyl-propyl ester bipolar membrane (PVDF-g-G-I BM) as diaphragms with an ultrasonic field (USF) has been explored in this study. The PVDF-g-G-I BM was prepared by the plasma-induced polymerization method. The method utilized the porous PVDF membrane as substrates, and G-I monomer was grafted onto both sides of the PVDF membrane after plasma treatment. The performance of the PVDF-g-G-I BM was demonstrated by measuring the cell voltage for the cell operated with or without an USF. According to steady-state E-I curves, the order of the cell voltage for alkaline water electrolysis was the DuPont commercial membrane>Water>PVDF-g-G-I BM under the same working condition. The PVDF-g-G-I BM was found to function well as a diaphragm in alkaline water electrolysis. In comparison with Water without an USF, the H 2 production efficiency by using the PVDF-g-G-I BM was improved 5-16/4% and an energy saving of ca. 15-20% (13-18%)/8-12% (6-10%) can be reached in alkaline water electrolysis at 0.5M (1.0M) NaOH for the cell operated with/without an USF, respectively.
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U2 - 10.1016/j.memsci.2011.10.050
DO - 10.1016/j.memsci.2011.10.050
M3 - Article
AN - SCOPUS:83855163413
SN - 0376-7388
VL - 389
SP - 197
EP - 204
JO - Journal of Membrane Science
JF - Journal of Membrane Science
ER -
