RT journal article
T1 Effect of the Heating Rate to Prevent the Generation of Iron Oxides during the Hydrothermal Synthesis of LiFePO4
A1 Ruiz Jorge, Francisco
A1 Benítez, Almudena
A1 García Jarana, María Belén
A1 Sánchez Oneto, Jezabel
A1 Portela Miguélez, Juan Ramón
A1 Martínez de la Ossa Fernández, Enrique José
A2 Ingeniería Química y Tecnología de Alimentos
K1 lithium iron phosphate
K1 hydrothermal synthesis
K1 heating rate
K1 morphology
K1 crystallinity and purity
AB Lithium-ion batteries (LIBs) have gained much interest in recent years because of the increasing energy demand and the relentless progression of climate change. About 30% of the manufacturing cost for LIBs is spent on cathode materials, and its level of development is lower than the negative electrode, separator diaphragm and electrolyte, therefore becoming the "controlling step". Numerous cathodic materials have been employed, LiFePO4 being the most relevant one mainly because of its excellent performance, as well as its rated capacity (170 mA center dot h center dot g(-1)) and practical operating voltage (3.5 V vs. Li+/Li). Nevertheless, producing micro and nanoparticles with high purity levels, avoiding the formation of iron oxides, and reducing the operating cost are still some of the aspects still to be improved. In this work, we have applied two heating rates (slow and fast) to the same hydrothermal synthesis process with the main objective of obtaining, without any reducing agents, the purest possible LiFePO4 in the shortest time and with the lowest proportion of magnetite impurities. The reagents initially used were: FeSO4, H3PO4, and LiOH, and a crucial phenomenon has been observed in the temperature range between 130 and 150 degrees C, being verified with various techniques such as XRD and SEM.
PB MDPI
SN 2079-4991
YR 2021
FD 2021-09
LK http://hdl.handle.net/10498/25836
UL http://hdl.handle.net/10498/25836
LA eng
NO A. Benitez thanks the financial support from the European Social Fund and Junta de Andalucia. Finally, the authors wish to acknowledge the technical staff from the University Institute of Nanochemistry (IUNAN) of the University of Cordoba. This research received no external funding.
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026