Raising efficiency of hydrogen generation from alkaline water electrolysis – Energy saving

“…Most of the recent research is focused on reducing system resistances and, consequently, energy losses. 28,126 In this way, one would approach the final goal of "manufacturing" hydrogen as a clean and economic energy carrier.…”

Section: Future Trendsmentioning

confidence: 99%

Hydrogen production by alkaline water electrolysis

Santos¹,

Sequeira²,

Figueiredo³

2013

Quím. Nova

373

226

View full text Add to dashboard Cite

Recebido em 13/12/12; aceito em 28/5/13; publicado na web em 17/7/13Water electrolysis is one of the simplest methods used for hydrogen production. It has the advantage of being able to produce hydrogen using only renewable energy. To expand the use of water electrolysis, it is mandatory to reduce energy consumption, cost, and maintenance of current electrolyzers, and, on the other hand, to increase their efficiency, durability, and safety. In this study, modern technologies for hydrogen production by water electrolysis have been investigated. In this article, the electrochemical fundamentals of alkaline water electrolysis are explained and the main process constraints (e.g., electrical, reaction, and transport) are analyzed. The historical background of water electrolysis is described, different technologies are compared, and main research needs for the development of water electrolysis technologies are discussed.

show abstract

“…The formation of modified oxygen-evolving catalysts in situ on an anode is advantageous as this increases the oxygen evolution rate and lowers energy consumption [10,11]. For example, Seabol and Liu prepared modified oxygen-evolving catalysts based on WO 3 /Co-P i and WO 3 …”

Section: Introductionmentioning

confidence: 99%