Insight into interaction of electrode particles from spent lithium-ion batteries assisted by pyrolysis

Hu, Shunxuan1,2; Li, Junguo1,2; Zhao, Binglong3,4; Jiang, Fenghao3; Liu, Ke1,3

2024-11-20

10.1016/j.colsurfa.2024.134877

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS   影响因子和分区

0927-7757

1873-4359

Pyrolysis-assisted dispersion for electrode particles from spent lithium-ion batteries (LiBs) is an extremely effective means to improve subsequent recovery efficiency. The relationship between interaction energy and surface properties of electrode particles has been constructed. The XRD results demonstrated that the mineral phases of both anode and cathode particles, mainly composed of graphite and LiCoO2 2 respectively, had little changes using a pyrolysis process at 550 degree celsius for 30 min. Nevertheless, pyrolysis treatment could remove the organic film of electrode particles to alter the surface properties effectively. With the organic film removal by pyrolysis, the subtraction value on the contact angle of cathode and anode particles was increased from 9.3 degrees degrees to 35.44 degrees, degrees , while the difference in charge ability was increased from 0.35 mV to 23.21 mV. The interaction energy calculations also illustrated that the electrostatic repulsion energy and hydrophilic repulsion energy both increased significantly, resulting in the total interaction energy of anode and cathode particles being 1.7 and 3.8 times that before pyrolysis. Furthermore, the total interaction energy, which determined the dispersing of electrode particles in suspension, mainly depended on the hydrophilic force. The findings might propose an alternative means for enhancing particle interaction to improve the recycling efficiency of electrode materials from spent LiBs by flotation.

Pyrolysis Electrode particles Spent lithium-ion battery Organic film Interaction energy Dispersion

SCI ; EI

英语

第一 ; 通讯

RevTech-SUSTech Joint RMS Technology Development Project[OR2109006] ; Shenzhen R D Fund["KYTDPT20181011104002","KQTD20180411143418361"] ; Geely-SUSTech Joint Advanced Biomass Gasification Technology Development Project[K2342Z221] ; Key R & D program of Shandong province, China[2022SFGC0304] ; Science and Technology Plan Project of Guizhou Province, China[2023190001] ; Shenzhen Fundamental Research Program[20231114170652002]

Chemistry

Chemistry, Physical

WOS:001280275500001

ELSEVIER

CHEMISTRY

Web of Science

1.Southern Univ Sci & Technol, Sch Innovat & Entrepreneurship, Shenzhen 518055, Peoples R China
2.GuiZhou Green Ind Technol Inst, Guiyang 550000, Peoples R China
3.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
4.Hong Kong Polytech Univ, Dept Mech Engn, Hung Hom, Kowloon, Hong Kong 999077, Peoples R China

Hu, Shunxuan,Li, Junguo,Zhao, Binglong,et al. Insight into interaction of electrode particles from spent lithium-ion batteries assisted by pyrolysis[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2024,701.

Hu, Shunxuan,Li, Junguo,Zhao, Binglong,Jiang, Fenghao,&Liu, Ke.(2024).Insight into interaction of electrode particles from spent lithium-ion batteries assisted by pyrolysis.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,701.

Hu, Shunxuan,et al."Insight into interaction of electrode particles from spent lithium-ion batteries assisted by pyrolysis".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 701(2024).