Insight mechanism of nano iron difluoride cathode material for high-energy lithium-ion batteries: a review

Zhang, Qiang; Wang, Jingxin; Sheng, Li; Wang, Li; Xie, Yingpeng; Hao, Yongsheng; Dong, Liangliang; He, Xiangming

doi:10.1007/s10008-022-05287-8

Cited by 4 publications

(2 citation statements)

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“…Electrode materials with higher theoretical energy density, such as sulfur-positive electrodes, are being actively explored. Metal fluorides have high theoretical energy density, attributed to a high capacity (>1 electron per metal ion) derived from a different conversion-type storage mechanism and a high conversion voltage derived from the high iconicity of the metal-fluorine bond [ 3 ]. Among all types of metal fluorides, FeF 2 is a typical conversion electrode material possessing a high energy density of 1519 Wh kg −1 [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…Metal fluorides have high theoretical energy density, attributed to a high capacity (>1 electron per metal ion) derived from a different conversion-type storage mechanism and a high conversion voltage derived from the high iconicity of the metal-fluorine bond [ 3 ]. Among all types of metal fluorides, FeF 2 is a typical conversion electrode material possessing a high energy density of 1519 Wh kg −1 [ 3 , 4 ]. In addition, nanocrystallization is very important to shorten the transport path of electrons and lithium ions and thus is beneficial to improve their electrochemical properties as lithium-ion battery cathode material [ 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

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A Novel Sugar-Assisted Solvothermal Method for FeF2 Nanomaterial and Its Application in LIBs

Zhang

Wang

et al. 2023

Materials

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Due to its quite high theoretical specific-energy density, FeF2 nanomaterial is a good candidate for the cathode material of lithium-ion batteries. The preparation of FeF2 nanomaterial is very important for its application. At present, the preparation process mostly involves high temperature and an inert atmosphere, which need special or expensive devices. It is very important to seek a low-temperature and mild method, without the need for high temperature and inert atmosphere, for the preparation and following application of FeF2 nanomaterial. This article reports a novel sugar-assisted solvothermal method in which the FeF3∙3H2O precursor is reduced into FeF2 nanomaterial by carbon derived from the dehydration and condensation of sugar. The obtained FeF2 nanomaterials are irregular granules of about 30 nm, with inner pores inside each granule. Electrochemical tests show the FeF2 nanomaterial’s potential as a lithium-ion battery cathode material.

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Section: Introductionmentioning

confidence: 99%