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    Effect of lognormal particle size distributions on particle spreading in additive manufacturing by Zhao, Ya, Chew, Jia Wei

    Published 2022
    “…The results reveal that: (i) the solid volume fraction of the initial packed particle bed in the delivery chamber increases then plateaus as the PSD width increases; (ii) regardless of PSD width, the solid volume fraction of the particle bed increases with spreading layer height before compression, but decreases with layer height after compression; (iii) the bed surface roughness increases with PSD width or layer height both before and after the compression of the spreading layer; (iv) the extent of increase in solid volume fraction during compression is correlated with the extent of decrease in bed surface roughness; and (v) the broader PSDs exhibit larger fluctuations of solid volume fraction of the particle bed and bed surface roughness due to greater variability in the arrangement of particles of different sizes. The results here have important implications on the design and operation of particle-based AM systems.…”
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    Journal Article
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    Operando investigation on the fast two-phase transition kinetics of LiFePO4/C composite cathodes with carbon additives for lithium-ion batteries by Shih, Jengywan, Lin, Guanyin, James Li, Ying Jeng, Hung, Tai-Feng, Jose, Rajan, Karuppiah, Chelladurai, Yang, ChunChen

    Published 2022
    “…Because, the 1D VGCF structure can provide rapid and long-pathways for electron transfer and regulate a better phase transition effect on LiFePO4 cathode compared to the other-dimensional carbon additives. Here, the olivine-type LiFePO4/C composite (LFP/C) cathode is basically derived from a sol-gel method, followed by a spray-dry technique to obtain a homogenous spherical morphology. …”
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    Article
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