Proton Hopping Mechanism in Solid Polymer Electrolysis Demonstrated by Tritium Enrichment and Electro-Osmotic Drag Measurement

被引：1

作者：

Saito, Masaaki ^{[1
]}

Imaizumi, Hiroshi ^{[2
]}

Kato, Norio ^{[3
]}

Ishii, Yoshiyuki ^{[4
]}

Saito, Keiichi ^{[5
]}

机构：

[1] Tokyo Metropolitan Ind Technol Res Inst, Komazawa Lab, Setagaya Ku, Tokyo 1580081, Japan

[2] Niigata Univ, Dept Chem Engn, Fac Engn, Niigata 9502181, Japan

[3] Ehime Prefectural Univ Hlth Sci, Fac Hlth Sci, Tobe, Ehime 7912101, Japan

[4] Hokkaido Univ, Inst Low Temp Sci, Kita Ku, Sapporo, Hokkaido 0600819, Japan

[5] Hokkaido Univ, Fac Pharmaceut Sci, Kita Ku, Sapporo, Hokkaido 0600812, Japan

来源：

ELECTROCHEMISTRY | 2010年 / 78卷 / 07期

关键词：

Tritium Enrichment; Electro-Osmotic Drag; Grotthuss Mechanism; Solid Polymer Electrolysis; WATER;

D O I：

10.5796/electrochemistry.78.597

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Anomalies in tritium enrichment cannot be explained only by isotopic effects in water electrolysis. The temperature dependence of the enrichment factor had been reported as increasing with 1/T. However, the increase was difficult to explain on the basis of kinetics. In this study, electro-osmotic drag (EOD, number of water molecule accompanied by a proton) and tritium enrichment ratio were investigated using light water (H2O) and heavy water (D2O) by solid polymer electrolysis. The EOD decreased and tritium enrichment ratio increased at low temperature for H2O. Electrolysis showed no temperature dependence for D2O. It was revealed that proton hopping by a hydrogen bond network of water molecules (the Grotthuss mechanism) affects the temperature dependence of EOD and tritium enrichment in the case of H2O.

引用

页码：597 / 600

页数：4

共 4 条

[1] Towards a Consistent Interpretation of Electro-osmotic Drag in Polymer Electrolyte Membranes
Berg, P.
Stornes, M.
FUEL CELLS, 2016, 16 (06) : 715 - 724
[2] An experimental investigation of electro-osmotic drag coefficients in a polymer electrolyte membrane fuel cell
Park, Yong Hun
Caton, Jerald A.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2008, 33 (24) : 7513 - 7520
[3] Comparison between Anode Side and Cathode Side for Tritium Enrichment of Solid Polymer Electrolysis
Saito, Masaaki
Imaizumi, Hiroshi
Kato, Norio
Ishii, Yoshiyuki
Sekiya, Kiyoshi
ELECTROCHEMISTRY, 2009, 77 (05) : 370 - 372
[4] Electro-osmotic drag coefficient of Nafion membrane with low water Content for Proton exchange membrane fuel cells
Wang, Yulin
Si, Chao
Zhang, Xiaomeng
Wang, Xiaodong
He, Wei
ENERGY REPORTS, 2022, 8 : 598 - 612

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