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Title: Two and Three-Electrode Impedance Studies on 18650 Li-Ion Cells

Abstract

Two and three electrode impedance measurements were made on 18650 Li-ion cells at different QB temperatures ranging from 35 C to {minus}40 C. The ohmic resistance of the cell is nearly constant the temperature range studied although the total cell impedance increases by an order of magnitude in the same temperature range. In contrast to what is commonly believed, we show from our three-electrode impedance results that, the increase in cell impedance comes mostly from the cathode and not from the anode. Further, the anode and cathode contribute to both the impedance loops (in the NyQuist plot).

Authors:
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (US); Sandia National Labs., Livermore, CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
9718
Report Number(s):
SAND99-2093J
TRN: AH200125%%27
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Other Information: Submitted to Journal of the Electrochemical Society; PBD: 11 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; METAL-NONMETAL BATTERIES; ANODES; CATHODES; ELECTRIC CONDUCTIVITY; IMPEDANCE; LITHIUM; PERFORMANCE

Citation Formats

Nagasubramanian, Ganesan. Two and Three-Electrode Impedance Studies on 18650 Li-Ion Cells. United States: N. p., 1999. Web.
Nagasubramanian, Ganesan. Two and Three-Electrode Impedance Studies on 18650 Li-Ion Cells. United States.
Nagasubramanian, Ganesan. Wed . "Two and Three-Electrode Impedance Studies on 18650 Li-Ion Cells". United States. https://www.osti.gov/servlets/purl/9718.
@article{osti_9718,
title = {Two and Three-Electrode Impedance Studies on 18650 Li-Ion Cells},
author = {Nagasubramanian, Ganesan},
abstractNote = {Two and three electrode impedance measurements were made on 18650 Li-ion cells at different QB temperatures ranging from 35 C to {minus}40 C. The ohmic resistance of the cell is nearly constant the temperature range studied although the total cell impedance increases by an order of magnitude in the same temperature range. In contrast to what is commonly believed, we show from our three-electrode impedance results that, the increase in cell impedance comes mostly from the cathode and not from the anode. Further, the anode and cathode contribute to both the impedance loops (in the NyQuist plot).},
doi = {},
journal = {Journal of the Electrochemical Society},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}