Dissolution of cathode active material of spent Li-ion ...
2016-5-1u2002·u2002The amount of LiCoO 2 used here (0.2 g) is worth of 0.02 M Co and 0.02 M Li. Thus, stoichiometrically, the tartaric acid (TA, 0.1–0.5 M) used here is much higher in concentration.TA acts as a chelating agent while the ascorbic acid (AA, 0.02 M) acts a reducing agent during the dissolution process.As shown in Fig. 2, rapid dissolution to the extent of 80% occurred in about …
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