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Life cycle environmental assessment of lithium-ion and nickel metal hydride batteries for plug-in hybrid and battery electric vehicles.

Authors
  • Majeau-Bettez, Guillaume
  • Hawkins, Troy R
  • Strømman, Anders Hammer
Type
Published Article
Journal
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Publication Date
May 15, 2011
Volume
45
Issue
10
Pages
4548–4554
Identifiers
DOI: 10.1021/es103607c
PMID: 21506538
Source
Medline
License
Unknown

Abstract

This study presents the life cycle assessment (LCA) of three batteries for plug-in hybrid and full performance battery electric vehicles. A transparent life cycle inventory (LCI) was compiled in a component-wise manner for nickel metal hydride (NiMH), nickel cobalt manganese lithium-ion (NCM), and iron phosphate lithium-ion (LFP) batteries. The battery systems were investigated with a functional unit based on energy storage, and environmental impacts were analyzed using midpoint indicators. On a per-storage basis, the NiMH technology was found to have the highest environmental impact, followed by NCM and then LFP, for all categories considered except ozone depletion potential. We found higher life cycle global warming emissions than have been previously reported. Detailed contribution and structural path analyses allowed for the identification of the different processes and value-chains most directly responsible for these emissions. This article contributes a public and detailed inventory, which can be easily be adapted to any powertrain, along with readily usable environmental performance assessments.

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