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The lithium battery separator acts as a protective barrier between the positive and negative electrodes, conducting ions but not electrons. In the ideal state after electrolyte filling and formation, the separator should maintain complete and flat contact with the electrodes. However, when we disassemble batteries, we often find severe wrinkling of the separator. (This can also be clearly observed...
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As the global battery industry seeks alternatives to lithium-based chemistries, sodium-ion batteries have steadily moved from academic research into early-stage commercialization. Among various cathode candidates, NFPP (Na₃Fe₂(PO₄)₃) has gained increasing attention due to its balanced performance, structural stability, and supply-chain advantages. Rather than pursuing extreme energy density, NFPP ...
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