High temperature water electrolysis in solid oxide cells

Brisse, Annabelle; Schefold, J.; Zahid, Mohsine

doi:10.1016/j.ijhydene.2008.07.120

Cited by 430 publications

(239 citation statements)

References 12 publications

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“…37). These oxide ions migrate through the electrolyte to the anode side where they combine to form oxygen molecules, releasing electrons 145,146 (Eq. 38).…”

Section: Future Trendsmentioning

confidence: 99%

Hydrogen production by alkaline water electrolysis

Santos¹,

Sequeira²,

Figueiredo³

2013

Quím. Nova

389

226

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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.

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“…37). These oxide ions migrate through the electrolyte to the anode side where they combine to form oxygen molecules, releasing electrons 145,146 (Eq. 38).…”

Section: Future Trendsmentioning

confidence: 99%

Hydrogen production by alkaline water electrolysis

Santos¹,

Sequeira²,

Figueiredo³

2013

Quím. Nova

389

226

View full text Add to dashboard Cite

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“…Therefore, the selection of the current density at which the cell should be operated must consider the operating cost involved with the electrical energy consumption of the stack as well as the investment cost associated with the stack area required in supporting the specified H 2 production rate. Brisse et al [13] have reported experimentally the achievement of high electrical-to-hydrogen energy conversion efficiencies at 10000 A m -2 . In our later investigations an average current density of 10000 A m -2 is used.…”

Section: Effects Of Average Current Densitymentioning

confidence: 99%

“…Firstly, there is very limited experimental data reported on SOECs. Although some data can be found in papers such as [11], [13] and [22], only voltage data are reported; there is no temperature distribution / gradient data.…”

Section: Model Validationmentioning

confidence: 99%

“…Schiller et al [11] studied the electrochemical performance of an SOEC, and the structure of the materials at different temperatures and current densities, and tested the durability of the stack. Brisse et al [13] paid special attention to the impedance behaviour of the SOEC operated at different temperatures, current densities and steam concentration. All these experimental studies of the SOEC (at the cell level and the stack level) are carried out in a furnace where the temperature is maintained at a constant level, although a temperature distribution within the stack has been reported [12].…”

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confidence: 99%

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The Effects of Operating Conditions on the Performance of a Solid Oxide Steam Electrolyser: A Model‐Based Study

et al. 2010

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. The effects of operating conditions on the performance of a solid oxide steam electrolyser: a model-based study. Fuel Cells, Wiley-VCH Verlag, 2010, 10 (6) AbstractTo support the development of hydrogen production by high temperature electrolysis using solid oxide electrolysis cells (SOECs), the effects of operating conditions on the performance of the SOECs were investigated using a one-dimensional model of a cathode-supported planar SOEC stack. Among all the operating parameters, temperature is the most influential factor on the performance of an SOEC, in both cell voltage and operation mode (i.e. endothermic, thermoneutral and exothermic). temperature of the cathode and anode gas streams, solid structure and interconnect (K)

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“…Various experimental studies focused on solid oxide electrolysis. Three different studies, published in 2008, have highlighted the high measured efficiency of high temperature solid oxide water electrolysis [9], some specific issues of materials and shape of electrodes [10], and control strategies and reactions with oxygen on the anode side [11]. Other tests of solid oxide electrolysis were presented in [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Potential of Reversible Solid Oxide Cells as Electricity Storage System

Giorgio

Desideri

2016

Energies

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Electrical energy storage (EES) systems allow shifting the time of electric power generation from that of consumption, and they are expected to play a major role in future electric grids where the share of intermittent renewable energy systems (RES), and especially solar and wind power plants, is planned to increase. No commercially available technology complies with all the required specifications for an efficient and reliable EES system. Reversible solid oxide cells (ReSOC) working in both fuel cell and electrolysis modes could be a cost effective and highly efficient EES, but are not yet ready for the market. In fact, using the system in fuel cell mode produces high temperature heat that can be recovered during electrolysis, when a heat source is necessary. Before ReSOCs can be used as EES systems, many problems have to be solved. This paper presents a new ReSOC concept, where the thermal energy produced during fuel cell mode is stored as sensible or latent heat, respectively, in a high density and high specific heat material and in a phase change material (PCM) and used during electrolysis operation. The study of two different storage concepts is performed using a lumped parameters ReSOC stack model coupled with a suitable balance of plant. The optimal roundtrip efficiency calculated for both of the configurations studied is not far from 70% and results from a trade-off between the stack roundtrip efficiency and the energy consumed by the auxiliary power systems.

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High temperature water electrolysis in solid oxide cells

Cited by 430 publications

References 12 publications

Hydrogen production by alkaline water electrolysis

Hydrogen production by alkaline water electrolysis

The Effects of Operating Conditions on the Performance of a Solid Oxide Steam Electrolyser: A Model‐Based Study

Potential of Reversible Solid Oxide Cells as Electricity Storage System

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