Energy storage characteristics of a new rechargeable solid oxide iron–air battery

Zhao, Xuan; Xu, Nansheng; Li, Xue; Gong, Yunhui; Huang, Kevin

doi:10.1039/c2ra21992a

Cited by 74 publications

(96 citation statements)

References 12 publications

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“…[1][2][3][4] Recently, a distinct group of solid oxide redox flow batteries targeted at stationary energy storage was developed based on the technologies of reversible solid oxide fuel cell (RSOFC) and H 2 chemical looping. [5][6][7][8][9][10][11][12][13][14][15][16][17] The nature of this type of metal-air battery is the use of solid O 2− conducting electrolyte. The uniqueness of this new battery is manifested by the fact that the electrical energy conveyed by RSOFC can be reversibly converted into chemical energy by a physically separated metal-metal oxide (Me-MeO x ) redox couple.…”

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confidence: 99%

A Multi-Physics Model for Solid Oxide Iron-Air Redox Flow Battery: Simulation of Discharge Behavior at High Current Density

Zhao

White

Huang

2013

J. Electrochem. Soc.

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A rigorous physics-based mathematical model for a solid oxide iron-air redox flow battery system is presented in this paper. The modeled flow battery system combines a Fe-FeO redox couple as the energy storage unit and a regenerative solid oxide fuel cell as the electrical functioning unit in a 2D axial symmetric geometry. This model was developed from fundamental theories of reaction engineering in which basic transport phenomena and chemical/electrochemical kinetics are included. The model shows good agreement with the experimental data. Simulation results for the chemical, electrochemical and transport behavior of the battery are discussed.

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confidence: 99%

A Multi-Physics Model for Solid Oxide Iron-Air Redox Flow Battery: Simulation of Discharge Behavior at High Current Density

Zhao

White

Huang

2013

J. Electrochem. Soc.

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“…4. 7 The DoD is the same as Fe utilization in the RCU bed. It reflects the degree of how much Fe is utilized during the discharge cycle and generated during the charge cycle.…”

Section: Numerical Solution and Validationmentioning

confidence: 99%

“…7 The role of ZrO 2 is to mitigate the coarsening of Fe-particles during repeated redox cycles. The molar ratio of Fe and ZrO 2 is 92:8.…”

Section: Construction Of Model With Boundary/initial Conditionsmentioning

confidence: 99%

“…The advantages of SOMARB include double electron transfer (O 2− ), energy storage in a chemical bed separated from the electrode, fast charging and discharging rate, use of earth-abundant element such as iron for energy storage, scalability and operational safety. Since its debut in 2011, 1 significant progress has been made in the areas of electrochemical performance optimization, [2][3][4][5][6][7][8][9][10][11][12] new metal-air chemistries [13][14][15][16][17][18][19][20] and multiphysics modeling of electrochemistry, mass transport and chemical redox kinetics that govern the electrical behaviors of the battery. [21][22][23] However, these studies were all performed isothermally with a focus on evaluating the factors that can affect the electrochemical performance of the battery.…”

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confidence: 99%

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Heat Balance in a Planar Solid Oxide Iron-Air Redox Battery: A Computational Analysis

Jin

Zhao

White

et al. 2015

J. Electrochem. Soc.

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In the present computational study, a thermal flow analysis is performed on a large-scale (10 × 10 cm) planar Solid Oxide Iron-Air Redox Battery (SOIARB) operated at 800 • C. The results explicitly indicate that the heat generated during the discharge cycle is more than what is needed for the charge cycle. Use of air as a working fluid to regulate the heat flow and heat balance within the battery is a practical engineering solution to maintain the desirable operating temperature and high energy efficiency for the battery system. Air utilization and inlet temperature are the two most important parameters that can be adjusted to regulate the heat flow between cycles. The analysis also shows that operating at a higher current density, around 1500 A/m 2 , the battery becomes thermally self-sustainable, but at the expense of lowered electrical cycle efficiency. For any type of reversible battery, the heat effect associated with the charge and discharge reactions are always opposite, viz. endothermic vs exothermic. When the operating temperature of a reversible battery is well above the ambient temperature, the magnitude of heat produced/absorbed and its subsequent impact on the distribution of local temperature within the battery (and stack) components can be significant. A proper management of the heat flow during the charge and discharge cycle will not only minimize the temperature gradient, thus thermal stresses, but also improve the overall energy efficiency of the battery system.The recently developed Solid-Oxide Metal-Air Redox Battery (SOMARB) is a type of high-temperature reversible battery. The advantages of SOMARB include double electron transfer (O 2− ), energy storage in a chemical bed separated from the electrode, fast charging and discharging rate, use of earth-abundant element such as iron for energy storage, scalability and operational safety. Since its debut in 2011, 1 significant progress has been made in the areas of electrochemical performance optimization, 2-12 new metal-air chemistries [13][14][15][16][17][18][19][20] and multiphysics modeling of electrochemistry, mass transport and chemical redox kinetics that govern the electrical behaviors of the battery. [21][22][23] However, these studies were all performed isothermally with a focus on evaluating the factors that can affect the electrochemical performance of the battery. The temperature nonuniformity caused by the opposite heat flows during the endothermic charge and exothermic discharge reactions has not yet been investigated in the past. The objective of the present study is to fill this gap by performing a computational analysis of heat flows and balance within components of a planar SOMARB subject to a typical charge and discharge cycle. With the basic thermal information in hand, a proper engineering design can be realized. Fig. 1 shows a perceived SOMARB system encompassing thermal storage and heat exchanger with air as the working fluid. Mathematical ModelThe cell structure of a SOMARB on which the mathematical model is built is show...

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“…The distinct advantages of this innovative battery design over conventional metal-air batteries include double electron-transfer (O 2À ), state-of-charge independent EMF (electromotive force), high specific energy and energy density, and independent design of power and energy. 12,13 More appealingly, the new battery stores chemical energy in redox couples that are physically separated from electrodes of RSOFC as illustrated in Fig. 1, avoiding the shape change problem of conventional chemical batteries.…”

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confidence: 99%

A high energy density all solid-state tungsten–air battery

Zhao

Gong

et al. 2013

Chem. Commun.

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Energy storage characteristics of a new rechargeable solid oxide iron–air battery

Cited by 74 publications

References 12 publications

A Multi-Physics Model for Solid Oxide Iron-Air Redox Flow Battery: Simulation of Discharge Behavior at High Current Density

A Multi-Physics Model for Solid Oxide Iron-Air Redox Flow Battery: Simulation of Discharge Behavior at High Current Density

Heat Balance in a Planar Solid Oxide Iron-Air Redox Battery: A Computational Analysis

A high energy density all solid-state tungsten–air battery

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