The recycling of expired aminocaproic acid injection for mint-leaf-like zinc aminocaproate

Author:

Hou Hongying1,Lan Jian1,Yao Yuan1,Meng Kun1,Huang Baoxiang1,Li Hao1

Affiliation:

1. Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, China

Abstract

In this work, a zinc (Zn) aminocaproate complex was extracted from expired aminocaproic acid injection by way of one-step facile chemical liquid-phase deposition for the first time, and the morphology, microstructure and electrochemical lithium (Li)-storage performances were also investigated. The results showed that the obtained zinc aminocaproate complex displayed a uniform mint-leaf-like flower morphology with a particle size of 300–500 nm. The reversible discharge specific capacities were 379.1 mAh/g at 100 mA/g and 100.6 mAh/g at 2000 mA/g, indicating high electrochemical lithium-storage performances. Conversion reaction and alloying/dealloying were confirmed to take part in the electrochemical lithium-storage mechanism. Seemingly, orderly hierarchical mint-leaf-like morphology may play an important role in improving the electrochemical lithium-storage capacity of the zinc aminocaproate complex anode. The satisfactory results may open a new path to develop the circular economy of expired waste aminocaproic acid injection which is very important for the environmental protection and sustainable development.

Publisher

Thomas Telford Ltd.

Subject

Materials Chemistry,Surfaces, Coatings and Films,Process Chemistry and Technology

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1. Editorial;Surface Innovations;2021-10

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