Ni–Fe–Ce(Mn,Fe)O2 cermet anode for rechargeable Fe–Air battery using LaGaO3 oxide ion conductor as electrolyte

Abstract

There is a strong demand for the development of a large capacity rechargeable battery in various fields.Recently, we proposed the combination of solid oxide fuel cell technology with Fe-air battery concepts using H 2 /H 2 O as a redox mediator and a LaGaO 3 -based oxide as an electrolyte. Because large internal resistance and large degradation during charge and discharge cycles were observed on the anode, there is a strong demand for improvements in discharge potential and cycle stability. This study investigates the use of a cermet anode consisting of a Ni-Fe alloy combined with an oxide ion conductor. It was observed that by using a cermet anode of Ni-Fe combined with Ce 0.6 Mn 0.3 Fe 0.1 O 2 (CMF), the observed capacity of the cell was improved to 1163 mAh g 21 Fe 21 at 10 mA cm 22 and 873 K. This is about 97% of the theoretical capacity by assuming the formation of Fe 3 O 4 (1200 mAh g 21 Fe 21 ). Cycle stability of the cell was also considerably improved with the use of a Ni-Fe-CMF anode compared to a Ni-Fe anode because of the suppressed aggregation provided by the mixing of Ni with CMF.

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

“…[5][6][7][8][9][10][11][12][13][14][15][16][17][18] Although the operating temperature, geometries and configurations for the flow battery systems reported in the literature vary to some degree, our multi-physics model presented here is developed for a close-loop tubular battery reactor working at 800…”

“…[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.…”

Multiphysics modeling of solid-oxide iron–air redox battery: analysis and optimization of operation and performance parameters

“…This technology has many advantages over conventional counterparts in energy-density, rate-capacity, cost, safety, and system integration. Since the first report in 2011 [13], electrochemical performance optimization [19][20][21][22][23][24][25], new metal-air chemistries [26][27][28][29] and finite-element multiphysics modeling of SOMARB [17,18,[30][31][32][33][34][35][36][37] have been demonstrated. In particular, the basic electrochemical performances and analysis of SOMARB at high temperature (e.g.…”

Understanding the High-Temperature Solid-Oxide Iron-Air Redox Battery Operated with an Oxygen Shuttle Mechanism: A Computational Study

“…Since the first demonstration of oxide-ion-chemistry based anodesupported tubular Solid-Oxide Iron-Air Redox Battery (SOIARB) in 2011, 1 significant progress has been made experimentally in the areas of materials identification, [2][3][4][5] new metal-air chemistries 1,[6][7][8][9][10][11][12][13][14] and performance optimization. [15][16][17][18][19][20] In contrast, theoretical understanding of the operating oxygen shuttle mechanisms of the new battery lags behind.…”