A new synthesis approach to Co₃O₄ from spent lithium-ion battery is presented. With the aid of an oxalic acid-based DES, the Co₃O₄ catalyst is successfully fabricated. The versatile application of Co₃O₄ is highlighted by electrochemical conversion of raw PET bottles into high-purity formic acid and terephthalic acid products under ambient conditions.

中文翻译：

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废旧锂离子电池衍生的 Co3O4 用于电催化聚对苯二甲酸乙二醇酯塑料回收

提出了一种从废旧锂离子电池中合成Co ₃ O ₄的新方法。借助草酸基DES，成功制备了Co ₃ O _{4催化剂。 Co 3} O ₄的多功能应用突出体现在环境条件下将PET 瓶原料电化学转化为高纯度甲酸和对苯二甲酸产品。