A Study on Electrical and Electrochemical Characteristics of Friction Stir Welded Lithium-Ion Battery Tabs for Electric Vehicles

被引：25

作者：

Mypati, Omkar ^{[1
]}

Mishra, Debasish ^{[2
]}

Sahu, Suryakanta ^{[2
]}

Pal, Surjya K. ^{[1
]}

Srirangam, Prakash ^{[3
]}

机构：

[1] Indian Inst Technol Kharagpur, Dept Mech Engn, Frict Stir Welding Lab, Kharagpur 721302, W Bengal, India

[2] Indian Inst Technol Kharagpur, Adv Technol Dev Ctr, Kharagpur 721302, W Bengal, India

[3] Univ Warwick, Warwick Mfg Grp, Coventry CV4 7AL, W Midlands, England

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2020年 / 49卷 / 01期

关键词：

Hybrid electric vehicles; lithium-ion battery; electrical conductivity; corrosion; friction stir welding; MECHANICAL-PROPERTIES; ALUMINUM; CORROSION; COPPER; AA6061-T6;

D O I：

10.1007/s11664-019-07711-8

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study attempts to join copper (Cu) and aluminium (Al) sheets in micro-thickness by using friction stir welding. These materials are being used as current collectors in lithium-ion (li-ion) battery which are employed as power sources for electric vehicles. Several experiments have been carried out, followed by the measurement of electrical conductivity by using a 4-probe setup and electrochemical analysis by using a potentiodynamic polarization test and an electro impedance spectroscopy test in lithium phosphorus hexafluoride (LiPF6), an electrolytic medium. The welded samples have been found to achieve an electrical conductivity of 9% less than the base Cu and the corrosion resistance of the welded samples has been found to be increasing because of the formation of inter-metallic compounds such as Al4Cu9, AlCu4 and AlCu at the weld interface. Among them AlCu4 has the highest hardness and the recovery elastic modulus than the rest.

引用

页码：72 / 87

页数：16

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