Comparison between cylindrical and prismatic lithium-ion cell costs using a process based cost model

JOURNAL OF POWER SOURCES

卷:340

Article

Ciez, Rebecca E.¹  Whitacre, J. F.^1,2 

[1] Carnegie Mellon Univ, Dept Engn & Publ Policy, 5000 Forbes Ave, Pittsburgh, PA 15213 USA

[2] Carnegie Mellon Univ, Dept Mat Sci & Engn, 5000 Forbes Ave, Pittsburgh, PA 15213 USA

关键词: Lithium-ion;    Production cost;    Cathode chemistry;    Cylindrical cell;   

DOI  :  10.1016/j.jpowsour.2016.11.054

来源: Elsevier

【 摘 要 】

The relative size and age of the US electric vehicle market means that a few vehicles are able to drive market-wide trends in the battery chemistries and cell formats on the road today. Three lithium-ion chemistries account for nearly all of the storage capacity, and half of the cells are cylindrical. However, no specific model exists to examine the costs of manufacturing these cylindrical cells. Here we present a process-based cost model tailored to the cylindrical lithium-ion cells currently used in the EV market. We examine the costs for varied cell dimensions, electrode thicknesses, chemistries, and production volumes. Although cost savings are possible from increasing cell dimensions and electrode thicknesses, economies of scale have already been reached, and future cost reductions from increased production volumes are minimal. Prismatic cells, which are able to further capitalize on the cost reduction from larger formats, can offer further reductions than those possible for cylindrical cells. (C) 2016 Published by Elsevier B.V.

【 授权许可】

Free