Clean hydrogen production from methanol-water solutions via power-saved electrolytic reforming process

被引：68

作者：

Uhm, Sunghyun ^{[1
]}

Jeon, Hongrae ^{[2
]}

Kim, Tae Jin ^{[3
]}

Lee, Jaeyoung ^{[1
,2
]}

机构：

[1] GIST, Ertl Ctr Electrochem & Catalysis, Kwangju 500712, South Korea

[2] GIST, SESE, Electrochem React & Technol Lab, Kwangju 500712, South Korea

[3] SK Innovat, Catalyst & Proc R&D Ctr, Taejon 305712, South Korea

来源：

JOURNAL OF POWER SOURCES | 2012年 / 198卷

关键词：

Electrochemical reforming; Methanol electrolysis; Hydrogen production; Direct methanol fuel cell; FUEL-CELLS; RUTHENIUM; CROSSOVER; PLATINUM; MEMBRANE;

D O I：

10.1016/j.jpowsour.2011.09.083

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：

We report the highly power-saved electrolytic hydrogen production by electrochemical reforming of methanol-water solutions. Operating conditions are optimized in terms of current efficiency, the stability of electrocatalysts and methanol loss. Energy requirements are also compared with conventional water electrolysis. It has been observed that current efficiency of methanol electrolysis increases with current density, while decreasing with cell temperature. Pt is found to be more effective electrocatalyst for methanol electrolysis in comparison with PtRu since current efficiency and overvoltage in conjunction with stability against dissolution should be taken into account. At high current density of 300 mA cm(-2), methanol electrolysis can save more than 65% electrical energy necessary to produce 1 kg of hydrogen compared with water electrolysis. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：218 / 222

页数：5