Solid polymer electrolyte water electrolysis systems for hydrogen production based on our newly developed membranes, Part I: Analysis of voltage-current characteristics

被引：54

作者：

Sawada, S. ^{[1
,2
]}

Yamaki, T. ^{[1
]}

Maeno, T. ^{[2
]}

Asano, M. ^{[1
]}

Suzuki, A. ^{[2
]}

Terai, T. ^{[2
]}

Maekawa, Y. ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Quantum Beam Sci Directorate, Gunma 3701292, Japan

[2] Univ Tokyo, Grad Sch Engn, Dept Nucl Engn & Management, Bunkyo Ku, Tokyo 1138656, Japan

来源：

PROGRESS IN NUCLEAR ENERGY | 2008年 / 50卷 / 2-6期

关键词：

solid polymer electrolyte water electrolysis; crosslinked-PTFE electrolyte membrane; voltage-current characteristics; electrode activation overvoltage; transport overvoltage;

D O I：

10.1016/j.pnucene.2007.11.029

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 [核科学与技术]; 082701 [核能科学与工程];

摘要：

A new solid polymer electrolyte water electrolysis system was constructed using an original proton exchange membrane (PEM). The highly proton-conductive PEM was prepared by the gamma-ray-induced post-grafting of styrene into a crosslinked-polytetrafluoroethylene (PTFE) film and subsequent sulfonation. The water vapor to be electrolyzed was controlled at a constant relative humidity and introduced into the cell at different temperatures up to 80 degrees C. As the cell voltage was increased, the current became higher; the maximum current was 50 mA/cm(2) at 2.5 V at a temperature of 80 degrees C, corresponding to a hydrogen production rate of 0.38 mL/min cm(2) in the normal state (25 degrees C, 1 atm). The voltage-current characteristics were analyzed with a theoretical model based on Butler-Volmer kinetics for electrodes and transport resistance through the PEM. This analysis revealed that the anode exchange current density and interfacial resistance determined the electrolysis performance. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：443 / 448

页数：6

共 15 条

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A simple model for solid polymer electrolyte (SPE) water electrolysis [J].