Understanding the Li diffusion mechanism and positive effect of current collector volume expansion in anode free batteries

Simple item page
dc.contributor.authorZhuang, Yen_AU
dc.contributor.authorZou, ZYen_AU
dc.contributor.authorLu, Ben_AU
dc.contributor.authorLi, YJen_AU
dc.contributor.authorWang, Den_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorShi, Sen_AU
dc.date.accessioned2021-07-14T19:52:44Zen_AU
dc.date.available2021-07-14T19:52:44Zen_AU
dc.date.issued2020-03-09en_AU
dc.date.statistics2021-07-06en_AU
dc.description.abstractIn anode free batteries (AFBs), the current collector acts as anode simultaneously and has large volume expansion which is generally considered as a negative effect decreasing the structural stability of a battery. Moreover, despite many studies on the fast lithium diffusion in the current collector materials of AFB such as copper and aluminum, the involved Li diffusion mechanism in these materials remains poorly understood. Through first-principles calculation and stress-assisted diffusion equations, here we study the Li diffusion mechanism in several current collectors and related alloys and clarify the effect of volume expansion on Li diffusion respectively. It is suggested that due to the lower Li migration barriers in aluminum and tin, they should be more suitable to be used as AFB anodes, compared to copper, silver, and lead. The Li diffusion facilitation in copper with a certain number of vacancies is proposed to explain why the use of copper with a thickness ≤ 100 nm as the protective coating on the anode improves the lifetime of the batteries. We show that the volume expansion has a positive effect on Li diffusion via mechanical–electrochemical coupling. Namely, the volume expansion caused by Li diffusion will further induce stress which in turn affects the diffusion. These findings not only provide in-depth insight into the operating principle of AFBs, but also open a new route toward design of improved anode through utilizing the positive effect of mechanical–electrochemical coupling. © 2020 Chinese Physical Society and IOP Publishing Ltden_AU
dc.identifier.citationZhuang, Y., Zou, Z., Lu, B., Li, Y., Wang, D., Avdeev, M., & Shi, S. (2020). Understanding the Li diffusion mechanism and positive effect of current collector volume expansion in anode free batteries. Chinese Physics B, 29(6), 068202. doi:10.1088/1674-1056/ab943cen_AU
dc.identifier.issn1674-1056en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleChinese Physics Ben_AU
dc.identifier.pagination068202en_AU
dc.identifier.urihttps://doi.org/10.1088/1674-1056/ab943cen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11063en_AU
dc.identifier.volume29en_AU
dc.language.isoenen_AU
dc.publisherIOP Publishingen_AU
dc.subjectLithiumen_AU
dc.subjectCopperen_AU
dc.subjectAluminiumen_AU
dc.subjectDiffusionen_AU
dc.subjectAlloysen_AU
dc.subjectElectric batteriesen_AU
dc.titleUnderstanding the Li diffusion mechanism and positive effect of current collector volume expansion in anode free batteriesen_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles