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Title: Characterization of Electronic and Ionic Transport in Li 1- xNi 0.33Mn 0.33Co 0.33O 2 (NMC 333) and Li 1- xNi 0.50Mn 0.20Co 0.30O 2 (NMC 523) as a Function of Li Content

Despite the extensive commercial use of Li 1-xNi 1-y-zMn zCo yO 2 (NMC) as the positive electrode in Li-ion batteries, and its long research history, its fundamental transport properties are poorly understood. These properties are crucial for designing high energy density and high power Li-ion batteries. Here, the transport properties of NMC 333 and NMC 523 are investigated using impedance spectroscopy and DC polarization and depolarization techniques. The electronic conductivity is found to increase with decreasing Li-content (increasing state-of-charge) from ~10 –7 Scm –1 to ~10 –2 Scm –1 over Li concentrations x = 0.00 to 0.75, corresponding to an upper charge voltage of 4.8 V with respect to Li/Li +. The lithium ion diffusivity is at least one order of magnitude lower, and decreases with increasing x to at x = ~0.5. As a result, the ionic conductivity and diffusivity obtained from the two measurements techniques (EIS and DC) are in good agreement, and chemical diffusion is limited by lithium transport over a wide state-of-charge range.
Authors:
 [1] ;  [2]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Hamad Bin Khalifa Univ., Doha (Qatar)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Grant/Contract Number:
SC0012583
Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 163; Journal Issue: 8; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Research Org:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Delithiation; Electronic; Energy storage; Ionic; Lithium Battery; Semiconductors; Solid-State Ionics; Transport properties
OSTI Identifier:
1436504

Amin, Ruhul, and Chiang, Yet -Ming. Characterization of Electronic and Ionic Transport in Li1-xNi0.33Mn0.33Co0.33O2 (NMC333) and Li 1-xNi0.50Mn0.20Co0.30O2 (NMC523) as a Function of Li Content. United States: N. p., Web. doi:10.1149/2.0131608jes.
Amin, Ruhul, & Chiang, Yet -Ming. Characterization of Electronic and Ionic Transport in Li1-xNi0.33Mn0.33Co0.33O2 (NMC333) and Li 1-xNi0.50Mn0.20Co0.30O2 (NMC523) as a Function of Li Content. United States. doi:10.1149/2.0131608jes.
Amin, Ruhul, and Chiang, Yet -Ming. 2016. "Characterization of Electronic and Ionic Transport in Li1-xNi0.33Mn0.33Co0.33O2 (NMC333) and Li 1-xNi0.50Mn0.20Co0.30O2 (NMC523) as a Function of Li Content". United States. doi:10.1149/2.0131608jes. https://www.osti.gov/servlets/purl/1436504.
@article{osti_1436504,
title = {Characterization of Electronic and Ionic Transport in Li1-xNi0.33Mn0.33Co0.33O2 (NMC333) and Li 1-xNi0.50Mn0.20Co0.30O2 (NMC523) as a Function of Li Content},
author = {Amin, Ruhul and Chiang, Yet -Ming},
abstractNote = {Despite the extensive commercial use of Li1-xNi1-y-zMnzCoyO2 (NMC) as the positive electrode in Li-ion batteries, and its long research history, its fundamental transport properties are poorly understood. These properties are crucial for designing high energy density and high power Li-ion batteries. Here, the transport properties of NMC333 and NMC523 are investigated using impedance spectroscopy and DC polarization and depolarization techniques. The electronic conductivity is found to increase with decreasing Li-content (increasing state-of-charge) from ~10–7 Scm–1 to ~10–2 Scm–1 over Li concentrations x = 0.00 to 0.75, corresponding to an upper charge voltage of 4.8 V with respect to Li/Li+. The lithium ion diffusivity is at least one order of magnitude lower, and decreases with increasing x to at x = ~0.5. As a result, the ionic conductivity and diffusivity obtained from the two measurements techniques (EIS and DC) are in good agreement, and chemical diffusion is limited by lithium transport over a wide state-of-charge range.},
doi = {10.1149/2.0131608jes},
journal = {Journal of the Electrochemical Society},
number = 8,
volume = 163,
place = {United States},
year = {2016},
month = {5}
}