Hydrothermal Leaching of LiCoO2 with Sulfuric Acid, Nitric Acid, and Citric Acid

被引：17

作者：

Aikawa, Tatsuya ^{[1
]}

Watanabe, Masaru ^{[1
,2
]}

Aida, Taku M. ^{[1
]}

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

机构：

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

[2] Tohoku Univ, Grad Sch Engn, Dept Chem Engn, Aoba Ku, 6-6-11 Aoba, Sendai, Miyagi 9808579, Japan

来源：

KAGAKU KOGAKU RONBUNSHU | 2017年 / 43卷 / 04期

关键词：

Lithium Ion Battery; Recycle; Acid Leaching; Hydrothermal; Sulfuric Acid; Nitric Acid; Citric Acid; LITHIUM-ION BATTERIES; THERMODYNAMIC PROPERTIES; WATER SUBSTANCE; RECOVERY; FORMULATION; CONVERSION; COBALT;

D O I：

10.1252/kakoronbunshu.43.313

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Spent lithium ion batteries are a secondary resource of metals. To recover Li and Co ions into water, hydrothermal reactions were performed to leach cobalt and lithium from LiCoO2 at 150-300 degrees C for 10-60 min with 0.4 M of various acids. Sulfuric acid, nitric acid, and citric acid were introduced as leaching reagents. For 0.4 M of citric acid aqueous solution, over 90% of Li and Co ions could be leached at 150 degrees C within 10 min. Reduction of cobalt ion (Co3+ to Co2+) is considered to be necessary for dissolution of Co ion into water solution and citric acid acted reductant. Formation of Co citrate, which was detected by UV-vis spectroscopy, was the reason why citric acid was effective for leaching LiCoO2 with hydrothermal water.

引用

页码：313 / 318

页数：6

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