Zhu, Pengcheng, Gastol, Dominika E., Marshall, Jean, Sommerville, Roberto, Goodship, Vannessa and Kendrick, Emma (2021) A review of current collectors for lithium-ion batteries. Journal of Power Sources, 485 . 229321. doi:10.1016/j.jpowsour.2020.229321 ISSN 0378-7753.

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Abstract

Lithium-ion batteries are the state-of-the-art power source for most consumer electronic devices. Current collectors are indispensable components bridging lithium-ion batteries and external circuits, greatly influencing the capacity, rate capability and long-term stability of lithium-ion batteries. Conventional current collectors, Al and Cu foils have been used since the first commercial lithium-ion battery, and over the past two decades, the thickness of these current collectors has decreased in order to increase the energy density. However to improve the performance further, alternative materials and structures, as well as specific treatments such as etching and carbon coating, have also been investigated to enhance the electrochemical stability and electrical conductivity of current collectors, for next-generation lithium-ion batteries with higher capacities and longer service lifetime. This work reviews six types of materials for current collectors, including Al, Cu, Ni, Ti, stainless steel and carbonaceous materials, and compares these materials from five aspects of electrochemical stability, electrical conductivity, mechanical property, density and sustainability. The effects of three different structures of foil, mesh and foam as well as two treatments of chemical etching and coating are also discussed. Future opportunities are highlighted at the end of this review.

Item Type:	Journal Article
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Library of Congress Subject Headings (LCSH):	Lithium ion batteries , Lithium ion batteries -- Materials, Nanostructured materials
Journal or Publication Title:	Journal of Power Sources
Publisher:	Elsevier S.A.
ISSN:	0378-7753
Official Date:	15 February 2021
Dates:	Date Event 15 February 2021 Published 13 December 2020 Available 2 December 2020 Accepted
Volume:	485
Article Number:	229321
DOI:	10.1016/j.jpowsour.2020.229321
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Date of first compliant deposit:	14 December 2020
Date of first compliant Open Access:	13 December 2021
RIOXX Funder/Project Grant:	Project/Grant ID RIOXX Funder Name Funder ID FIRG005 Faraday Institution UNSPECIFIED FIRG006 Faraday Institution UNSPECIFIED TS/S004572/1 Innovate UK http://dx.doi.org/10.13039/501100006041

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