Reversible solid oxide systems for energy and chemical applications – Review &amp; perspectives

Venkataraman, Vikrant; Pérez–Fortes, Mar; Wang, Ligang; Hajimolana, Yashar S.; Boigues-Muñoz, Carlos; Agostini, Alessandro; McPhail, Stephen J.; herle, Jan Van; Aravind, P.V.

doi:10.1016/j.est.2019.100782

Cited by 90 publications

(44 citation statements)

References 80 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering the reversible operation, SOCs guarantee to have a single unit able to operate in both modes differently from other cell configurations where some material limits occur. Moreover, they also are more favourable than commercially available energy storage systems, showing an energy density of 500-3000 kWh m −3 with respect to 0.5-80 kWh m −3 of mechanical storage, 80-500 kWh m −3 of thermal storage and 50-500 kWh m −3 of batteries [7], where the volume of the storage device includes the volumes of the energy storing element, accessories and supporting structures, as well as the inverter system [10]. Another relevant parameter to evaluate rSOC reliability is its actual durability.…”

Section: Performance Evaluationmentioning

confidence: 99%

“…In view of a smart grid based on the power balance without using fossil fuels, new technologies are requested in order to store and/or convert the energy, solving the temporal mismatch in supply and demand. These systems should be reliable with high stored energy density and round-trip energy efficiency, affordable, easy to scale, having a long lifetime and minimum environmental impacts [7]. There are already some mature technologies, such Sustainability 2021, 13, 4777 2 of 23 as pump hydro-systems (electricity-potential energy conversion), flywheels (electricityrotational energy conversion), batteries (electricity-electrochemical energy conversion) and thermal energy storages (electricity-thermal energy conversion).…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, the requested voltage to split water is reduced since a part of inlet energy is provided as heat. On the other hand, the high thermal inertia does not permit to use SOCs for the frequency regulation of electric grid, making them more suitable to level loads, to shave peaks of production and as seasonal energy storage [7]. Currently, SOCs are not yet competitive on the market due to quite high capital costs, however they will be partially reduced through economy of scale: from 2000 to 530 € kW el −1 by 2050 [14].…”

Section: Introductionmentioning

confidence: 99%

“…A peculiarity of high-temperature electrolyser operation consists of the possibility to easily use different reactants: pure water for steam electrolysis, water with carbon dioxide to produce a syngas through co-electrolysis or only CO 2 in dry electrolysis mode. Indeed, the ceramic materials are more resistant compared to noble metal catalysts of low-temperature cells and nonspecific structure rearrangements are required [7]. The produced syngas with a variable H 2 /CO percentage can be converted to generate CO 2neutral synthetic fuels.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Operating Principles, Performance and Technology Readiness Level of Reversible Solid Oxide Cells

Bianchi¹,

Bosio²

2021

Sustainability

View full text Add to dashboard Cite

The continuous increase of energy demand with the subsequent huge fossil fuel consumption is provoking dramatic environmental consequences. The main challenge of this century is to develop and promote alternative, more eco-friendly energy production routes. In this framework, Solid Oxide Cells (SOCs) are a quite attractive technology which could satisfy the users’ energy request working in reversible operation. Two operating modes are alternated: from “Gas to Power”, when SOCs work as fuel cells fed with hydrogen-rich mixture to provide both electricity and heat, to “Power to Gas”, when SOCs work as electrolysers and energy is supplied to produce hydrogen. If solid oxide fuel cells are an already mature technology with several stationary and mobile applications, the use of solid oxide electrolyser cells and even more reversible cells are still under investigation due to their insufficient lifetime. Aiming at providing a better understanding of this new technological approach, the study presents a detailed description of cell operation in terms of electrochemical behaviour and possible degradation, highlighting which are the most commonly used performance indicators. A thermodynamic analysis of system efficiency is proposed, followed by a comparison with other available electrochemical devices in order to underline specific solid oxide cell advantages and limitations.

show abstract

Section: Performance Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Operating Principles, Performance and Technology Readiness Level of Reversible Solid Oxide Cells

Bianchi¹,

Bosio²

2021

Sustainability

View full text Add to dashboard Cite

show abstract

“…The critical challenges for future energy systems featured with the high penetration of variable renewable energy sources call for technological innovation on (1) the efficient storage of excess renewable power, (2) the integration of different energy grids and infrastructures (e. g., electrical, natural gas, transport fuel), and (3) the decarbonization of transportation fuels. Several electrical storage technologies are being actively developed, e. g., advanced batteries, super-capacitors, flywheels, redox flow batteries, superconducting magnetic energy storage, compressed air energy storage and electrolyzers [1]. Although some can reach a high round-trip efficiency, e. g., 80% reported for a pumped hydroelectric storage and above 90% for lithium-ion batteries [2], the modestly-efficient electrochemical conversion can uniquely allow for converting excess renewable electricity to hydrogen and hydrogen-derived fuels, e. g., ammonia and carbonaceous fuels like methane and methanol [3].…”

Section: Introductionmentioning

confidence: 99%

Reversible solid-oxide cell stack based power-to-x-to-power systems: Comparison of thermodynamic performance

Wang¹,

Zhang²,

Pérez–Fortes³

et al. 2020

Preprint

Self Cite

View full text Add to dashboard Cite

The increasing penetration of variable renewable energies poses new challenges for grid management. The economic feasibility of grid-balancing plants may be limited by low annual operating hours if they work either only for power generation or only for power storage. This issue might be addressed by a dual-function power plant with power-to-x capability, which can produce electricity or store excess renewable electricity into chemicals at different periods. Such a plant can be uniquely enabled by a solid-oxide cell stack, which can switch between fuel cell and electrolysis with the same stack. This paper investigates the optimal conceptual design of this type of plant, represented by power-to-x-to-power process chains with x being hydrogen, syngas, methane, methanol and ammonia, concerning the efficiency (on a lower heating value) and power densities. The results show that an increase in current density leads to an increased oxygen flow rate and a decreased reactant utilization at the stack level for its thermal management, and an increased power density and a decreased efficiency at the system level. The power-generation efficiency is ranked as methane (65.9%), methanol (60.2%), ammonia (58.2%), hydrogen (58.3%), syngas (53.3%) at 0.4 A/cm 2 , due to the benefit of heat-to-chemical-energy conversion by chemical reformulating and the deterioration of electrochemical performance by the dilution of hydrogen. The power-storage efficiency is ranked as syngas (80%), hydrogen (74%), methane (72%), methanol (68%), ammonia (66%) at 0.7 A/cm 2 , mainly due to the benefit of co-electrolysis and the chemical energy loss occurring in the chemical synthesis reactions. The lost chemical energy improves plant-wise heat integration and compensates for its adverse effect on power-storage efficiency. Combining these efficiency numbers of the two modes results in a rank of round-trip efficiency: methane (47.5%) > syngas (43.3%) ≈ hydrogen (42.6%) > methanol (40.7%) > ammonia (38.6%). The pool of plant designs obtained lays the basis for the optimal deployment of this balancing technology for specific applications.

show abstract

Electrochemical Techniques for Supercapacitors

Shah

Aziz

Oyama

2023

Biomass‐Based Supercapacitors

View full text Add to dashboard Cite

Reversible solid oxide systems for energy and chemical applications – Review & perspectives

Cited by 90 publications

References 80 publications

Operating Principles, Performance and Technology Readiness Level of Reversible Solid Oxide Cells

Operating Principles, Performance and Technology Readiness Level of Reversible Solid Oxide Cells

Reversible solid-oxide cell stack based power-to-x-to-power systems: Comparison of thermodynamic performance

Electrochemical Techniques for Supercapacitors

Contact Info

Product

Resources

About