TY - JOUR
T1 - Application of hydrothermal leaching technology to spent LIB cathode materials with citric acid using batch-type device and flow system
AU - Zheng, Qingxin
AU - Shibazaki, Kensuke
AU - Ogawa, Tetsufumi
AU - Kishita, Atsushi
AU - Hiraga, Yuya
AU - Watanabe, Masaru
N1 - Funding Information:
is work was supported by the Japan Science and Technology Agency (JST)-Mirai program [grant number JP18077450] and the Japan Society for the Promotion of Science (JSPS)-Grant-in-Aid for challenging Exploratory Research [grant number No. 18K18966]. e sample of NMC was kindly supplied by VOLTA Inc. (Shizuoka, Japan). We deeply appreciate the cooperation.
Funding Information:
This work was supported by the Japan Science and Technology Agency (JST)-Mirai program [grant number JP18077450] and the Japan Society for the Promotion of Science (JSPS)-Grant-in-Aid for challenging Exploratory Research [grant number No. 18K18966]. The sample of NMC was kindly supplied by VOLTA Inc. (Shizuoka, Japan). We deeply appreciate the cooperation.
PY - 2021/6/20
Y1 - 2021/6/20
N2 - Hydrothermal leaching of spent lithium-ion battery (LIB) cathode materials, Li(Ni, Mn, Co)O2 (NMC), was performed with citric acid using a batch-type device and a flow system in turn. Before the hydrothermal experiments, NMC cathode materials were pretreated and characterized. The effect of citric acid concentration on leaching efficiencies of metal components was investigated using the batch-type device. The preliminary experimental conditions for the continuous hydrothermal leaching using the flow system were assessed and pre-set, including the temperature of 200°C, the citric acid concentration of 0.4 mol/L, the pulp density of 10 g/L, and the flow rate of 30 mL/min. NMC cathode materials were leached continuously in hydrothermal water using the flow system. The leachate with a high leaching efficiency could be collected continuously since 65 min of feeding the slurry, and the maximum leaching efficiency of Li, Co, Ni, and Mn was 96%, 91%, 98%, and 94%, respectively.
AB - Hydrothermal leaching of spent lithium-ion battery (LIB) cathode materials, Li(Ni, Mn, Co)O2 (NMC), was performed with citric acid using a batch-type device and a flow system in turn. Before the hydrothermal experiments, NMC cathode materials were pretreated and characterized. The effect of citric acid concentration on leaching efficiencies of metal components was investigated using the batch-type device. The preliminary experimental conditions for the continuous hydrothermal leaching using the flow system were assessed and pre-set, including the temperature of 200°C, the citric acid concentration of 0.4 mol/L, the pulp density of 10 g/L, and the flow rate of 30 mL/min. NMC cathode materials were leached continuously in hydrothermal water using the flow system. The leachate with a high leaching efficiency could be collected continuously since 65 min of feeding the slurry, and the maximum leaching efficiency of Li, Co, Ni, and Mn was 96%, 91%, 98%, and 94%, respectively.
KW - Batch
KW - Citric Acid
KW - Flow System
KW - Hydrothermal Leaching
KW - LIB Cathode Materials
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U2 - 10.1252/jcej.20we182
DO - 10.1252/jcej.20we182
M3 - Article
AN - SCOPUS:85108876310
SN - 0021-9592
VL - 54
SP - 344
EP - 350
JO - Journal of Chemical Engineering of Japan
JF - Journal of Chemical Engineering of Japan
IS - 6
ER -
