Development and testing of a PEM SO2-depolarized electrolyzer and an operating method that prevents sulfur accumulation

被引：39

作者：

Steimke, John L. ^{[1
]}

Steeper, Timothy J. ^{[1
]}

Colon-Mercado, Hector R. ^{[1
]}

Gorensek, Maximilian B. ^{[1
]}

机构：

[1] Savannah River Natl Lab, Aiken, SC 29808 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2015年 / 40卷 / 39期

关键词：

Electrolysis; Hybrid sulfur cycle; SO2-depolarized electrolysis; Sulfuric acid; DIOXIDE DEPOLARIZED ELECTROLYSIS; HYDROGEN; SO2; MEMBRANES; CYCLE; ACID;

D O I：

10.1016/j.ijhydene.2015.08.041

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The hybrid sulfur (HyS) cycle is being developed as a technology to generate hydrogen by splitting water, using heat and electrical power from a nuclear or solar power plant. A key component is the SO2-depolarized electrolysis (SDE) cell, which reacts SO2 and water to form hydrogen and sulfuric acid. SDE could also be used in once-through operation to consume SO2 and generate hydrogen and sulfuric acid for sale. A proton exchange membrane (PEM) SDE cell based on a PEM fuel cell design was fabricated and tested. Measured cell potential as a function of anolyte pressure and flow rate, sulfuric acid concentration, and cell temperature are presented for this cell. Sulfur accumulation was observed inside the cell, which could have been a serious impediment to further development. A method to prevent sulfur formation was subsequently developed. This was made possible by a testing facility that allowed unattended operation for extended periods. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：13281 / 13294

页数：14

共 28 条

[1] Electrochemical aspects of the Hybrid Sulfur Cycle for large scale hydrogen production [J].