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Figure 4 shows NMR measurements of electrolyte composition during cycling for anode-free cells that started with three different electrolytes: 0.9m (1M) LiPF6 (a,b), 0.9m (1M) LiDFOB (c,d) and 0.5m (0.6M) LiDFOB+0.5m (0.6M) LiBF4 (e,f). All electrolytes used FEC EC (44:56 weight ratio=1:2 volume ratio) solvent, and cycling conditions were the same as for the cells in Fig. 1: 40 ¡ãC, C/5 charge, C/2 discharge between 3.6V and 4.5V at 75 kPa. ÒÔÉÏÊÇÎÄÏ×ÖеÄÒ»¶Î»°£¬MÎÒÖªµÀ´ú±ímol/L µ«ÊÇÇ°Ãæ¸ömÊÇʲôµ¥Î»°¡ ´ú±íʲôÒâ˼°¡ С°×Çó½â°¡~ |
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