Layer Shape LiFePO4 Obtained by Powder Extrusion Molding as Solid Boosters for Ferro/Ferricyanide Catholyte in Semisolid Redox Flow Battery: Effect of Porosity and Shape
| Autor: | Jose F. Vivo‐Vilches, Álvaro Vázquez‐Navalmoral, Carmen de la Torre‐Gamarra, Jesús Cebollada, Alejandro Várez, Belén Levenfeld |
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| Přispěvatelé: | European Commission, Agencia Estatal de Investigación (España), Comunidad de Madrid, Ministerio de Ciencia e Innovación (España), Universidad Carlos III de Madrid |
| Rok vydání: | 2022 |
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| Popis: | [EN] Powder extrusion molding is proposed to fabricate ceramic LiFePO layers (0.5–1.0 mm thickness) as solid booster for ferricyanide electrolyte in semisolid redox flow battery. In some extruded layers, the binder is partially decomposed, while in others it is completely removed and, afterwards, the material is sintered, so materials with different porosity and dimensions are obtained. After characterizing the materials, the kinetics for the reaction with ferricyanide is evaluated, being the binder-less materials the ones which react faster and reach larger degrees of oxidation. For the material with 1.0 mm thick comparable results to the ones already published are obtained (69 % capacity for LiFePO compared to the theoretical value). In the case of the 0.5 mm thick sintered solid, an outstanding performance is achieved, reaching almost the theoretical capacity (94 %) with a very high coulombic efficiency (>99 %) at 1 mA cm, results that were only obtained at much lower current densities in previous works. CONEX-Plus programme funded by Universidad CarlosIII de Madrid and the European Union’s Horizon 2020 research and innovation programme under the MarieSklodowska-Curie grant agreement No. 801538.The authors also thank the Agencia Española de Investigación/Fondo Europeo de Desarrollo Regional(FEDER/UE)for funding the project PID2019-106662RB-C43.This work has also beensupported by Comunidad de Madrid(Spain) though two project:multi annual agreement with UC3M (“Excelencia para el ProfesoradoUniversitario”– EPUC3M04)– Fifth regional research plan 2016–2020,and DROMADER-CM(Y2020/NMT6584) |
| Databáze: | OpenAIRE |
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