Our work proposes a comparison between Spark Plasma Sintering of LiFePO 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 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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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8198947 | PMC |
| http://dx.doi.org/10.3390/ma14112826 | DOI Listing |
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