Open AccessSeparation of Cathode Material from Aluminum Plate by Ultrasonic Action using Fenton’s Reagent
Author(s) -
Hui Huang,
Fangfang Liu,
Qunying Zhang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/835/1/012008
Subject(s) - polyvinylidene fluoride , cathode , materials science , reagent , lithium (medication) , lithium cobalt oxide , aluminium , ultrasonic sensor , composite material , chemical engineering , inorganic chemistry , chemistry , lithium ion battery , polymer , organic chemistry , medicine , power (physics) , physics , battery (electricity) , quantum mechanics , acoustics , engineering , endocrinology
Polyvinylidene fluoride (PVDF) has been used as a binder in lithium-ion batteries due to its high viscosity, which makes it difficult to separate the cathode material from the aluminum plate when recycling waste lithium-ion batteries. In this study, the peeling effect and mechanism of Fenton’s reagent on the cathode material and aluminum plate of spent lithium-ion batteries under the action of ultrasound has been researched. The results showed that when the ratio of Fe 2 +/H 2 O 2 was 1:40, temperature was 45 °C, time was 35 min, and liquid-solid ratio was 50:1, the removal rate of cathode material was 98.52%. The combined action of Fenton’s reagent and ultrasonic cavitation oxidized or promoted PVDF to combine with lithium cobalt oxide to form COF 3 , thereby separating the cathode material from the aluminum foil without changing the structure of lithium cobalt oxide cathode material. Nevertheless, this study may provide a processing method to separate the cathode material from the aluminum plate effectively.