Kinetic Study of Hydrothermal Leaching of Lithium Cobalt Oxide with Citric Acid

被引：8

作者：

AzumAi, Daiki ^{[1
]}

Aikawa, Tatsuya ^{[1
]}

Hiraga, Yuya ^{[2
]}

Watanabe, MaSaTU ^{[2
]}

Smith, Richard Lee, Jr. ^{[1
,2
]}

机构：

[1] Tohoku Univ, Grad Sch Environm Studies, Aoba Ku, 6-6-11-414 Aoba Aramaki, Sendai, Miyagi 9808579, Japan

[2] Tohoku Univ, Dept Chem Engn, Res Ctr Supercrit Fluid Technol, Aoba Ku, 6-6-11-414 Aoba, Sendai, Miyagi 9808579, Japan

来源：

KAGAKU KOGAKU RONBUNSHU | 2019年 / 45卷 / 04期

关键词：

Lithium Ion Battery; Acid Leaching; Citric Acid; High Pressure Water; Reaction Kinetics; ION BATTERIES; THERMODYNAMIC PROPERTIES; WATER SUBSTANCE; VALUABLE METALS; ORGANIC-ACIDS; RECOVERY; FORMULATION; LICOO2;

D O I：

10.1252/kakoronbunshu.45.147

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

With a view to constructing a resource circulation system for lithium ion batteries, we attempted to recover lithium and cobalt ions by hydrothermal citric acid leaching into water. Under reaction conditions in the range of 100-200 degrees C, 5-30 min, and 0.1-1.0 M citric acid, leaching efficiency of lithium and cobalt was found to increase with reaction temperature, time and citric acid concentration, and recovery of both metals exceeded 80%. To elucidate the reaction mechanism, leaching rate constants of lithium and cobalt were calculated based on the unreacted core or shrinking core model. It was found that the leaching behavior was expressed by the product layer controlled model in the unreacted core model, and the leaching rate constants of lithium and cobalt are approximately linearly dependent on the proton concentration.

引用

页码：147 / 157

页数：11

共 21 条

[1] Hydrothermal Leaching of LiCoO2 with Sulfuric Acid, Nitric Acid, and Citric Acid [J].