Spark Plasma Sintering of LiFePO(4): AC Field Suppressing Lithium Migration

Our work proposes a comparison between Spark Plasma Sintering of LiFePO(4) carried out using an Alternating Current (AC) and Direct Current (DC). It quantifies the Li-ion migration using DC, and it validates such hypothesis using impedance spectroscopy, X-ray photoelectron spectroscopy and inductive...

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Detalles Bibliográficos
Autores principales: Luo, Nan, Lin, Yong, Guo, Jian, Quattrocchi, Emanuele, Deng, Huaijiu, Dong, Jian, Ciucci, Francesco, Boi, Filippo, Hu, Chunfeng, Grasso, Salvatore
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198947/
https://www.ncbi.nlm.nih.gov/pubmed/34070590
http://dx.doi.org/10.3390/ma14112826
Descripción
Sumario:Our work proposes a comparison between Spark Plasma Sintering of LiFePO(4) carried out using an Alternating Current (AC) and Direct Current (DC). It quantifies the Li-ion migration using DC, and it validates such hypothesis using impedance spectroscopy, X-ray photoelectron spectroscopy and inductively coupled plasma optical emission spectroscopy. The use of an AC field seems effective to inhibit undesired Li-ion migration and achieve high ionic conductivity as high as 4.5 × 10(−3) S/cm, which exceeds by one order of magnitude samples processed under a DC field. These results anticipate the possibility of fabricating a high-performance all-solid-state Li-ion battery by preventing undesired Li loss during SPS processing.

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