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The most prevalent conditions that interfere with optimal Li/SOCl2 cell performance are excessive anode passivation and cathode freeze-over. Anode passivation is the formation of a layer of LiCl, which is also known as the solid electrolyte interphase (SEI), on the anode surface. Cathode freeze-over is the formation of LiCl discharge products in the outer portion of the cathode, which blocks access to unused reaction sites.
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