Hydrogen production by advanced proton exchange membrane (PEM) water electrolysers - Reduced energy consumption by improved electrocatalysis

被引:270
作者
Marshall, A. [1 ]
Borresen, B. [1 ]
Hagen, G. [1 ]
Tsypkin, M. [1 ]
Tunold, R. [1 ]
机构
[1] NTNU, Grp Electrochem, Dept Mat Technol, N-7491 Trondheim, Norway
关键词
electrocatalysis; hydrogen production; PEM water electrolysis;
D O I
10.1016/j.energy.2006.07.014
中图分类号
O414.1 [热力学];
学科分类号
摘要
Proton exchange membrane (PEM) water electrolysis systems offers several advantages over traditional technologies including greater energy efficiency, higher production rates, and more compact design. Normally in these systems, the anode has the largest overpotential at typical operating current densities. By development of the electrocatalytic material used for the oxygen evolving electrode, great improvements in efficiency can be made. We find that using cyclic voltammetry and steady state polarisation analysis, enables us to separate the effects of true specific electrocatalytic activity and active surface area. Understanding these two factors is critical in developing better electrocatalytic materials in order to further improve the performance of PEM water electrolysis cells. The high current performance of a PEM water electrolysis cell using these oxides as the anode electrocatalyst has also been examined by steady state polarisation measurements and electrochemical impedance spectroscopy. Overall the best cell voltage obtained is 1.567 V at 1 A cm(-2) and 80 degrees C was achieved when using Nafion 115 as the electrolyte membrane. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:431 / 436
页数:6
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