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Chemical Reactivity Descriptor for the Oxide-Electrolyte Interface in Li-Ion Batteries

Journal Article · · Journal of Physical Chemistry Letters
 [1];  [2];  [3];  [4];  [5];  [5];  [6]
  1. Univ. di Milano-Bicocca, Milano (Italy). Dept. of Material Science; Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Mechanical Engineering
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Mechanical Engineering
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Materials Science & Engineering
  4. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Research Lab. of Electronics; Kyoto Univ. (Japan). Dept. of Energy and Hydrocarbon Chemistry
  5. BMW Group, München (Germany)
  6. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Mechanical Engineering, Dept. of Materials Science & Engineering, and Research Lab. of Electronics

Understanding electrochemical and chemical reactions at the electrode–electrolyte interface is of fundamental importance for the safety and cycle life of Li-ion batteries. Positive electrode materials such as layered transition metal oxides exhibit different degrees of chemical reactivity with commonly used carbonate-based electrolytes. Here we employed density functional theory methods to compare the energetics of four different chemical reactions between ethylene carbonate (EC) and layered (LixMO2) and rocksalt (MO) oxide surfaces. EC dissociation on layered oxides was found energetically more favorable than nucleophilic attack, electrophilic attack, and EC dissociation with oxygen extraction from the oxide surface. In addition, EC dissociation became energetically more favorable on the oxide surfaces with transition metal ions from left to right on the periodic table or by increasing transition metal valence in the oxides, where higher degree of EC dissociation was found as the Fermi level was lowered into the oxide O 2p band.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1484008
Journal Information:
Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 16 Vol. 8; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

Unveiling Nickel Chemistry in Stabilizing High‐Voltage Cobalt‐Rich Cathodes for Lithium‐Ion Batteries journal November 2019
Interaction of Ultrathin Films of Ethylene Carbonate with Oxidized and Reduced Lithium Cobalt Oxide-A Model Study of the Cathode|Electrolyte Interface in Li-Ion Batteries journal December 2018
Kinetic Stability of Bulk LiNiO 2 and Surface Degradation by Oxygen Evolution in LiNiO 2 -Based Cathode Materials journal November 2018
Surface Degradation and Chemical Electrolyte Oxidation Induced by the Oxygen Released from Layered Oxide Cathodes in Li−Ion Batteries journal March 2019
Kinetics‐Controlled Degradation Reactions at Crystalline LiPON/Li x CoO 2 and Crystalline LiPON/Li‐Metal Interfaces journal March 2018
Fading Mechanisms and Voltage Hysteresis in FeF 2 -NiF 2 Solid Solution Cathodes for Lithium and Lithium-Ion Batteries journal January 2019
Non-flammable electrolyte enables Li-metal batteries with aggressive cathode chemistries journal July 2018
Bisalt ether electrolytes: a pathway towards lithium metal batteries with Ni-rich cathodes journal January 2019
Revealing electrolyte oxidation via carbonate dehydrogenation on Ni-based oxides in Li-ion batteries by in situ Fourier transform infrared spectroscopy journal January 2020
Anodic decomposition of surface films on high voltage spinel surfaces—Density function theory and experimental study journal December 2019
The Effect of Electrode-Electrolyte Interface on the Electrochemical Impedance Spectra for Positive Electrode in Li-Ion Battery journal November 2018
Development of Polymer Electrolyte and Cathode Material for Li-Batteries journal December 2018
Effect of Ambient Storage on the Degradation of Ni-Rich Positive Electrode Materials (NMC811) for Li-Ion Batteries journal January 2018
Probing Surface Chemistry Changes Using LiCoO 2 -only Electrodes in Li-Ion Batteries journal January 2018
Editors' Choice—Coating-Dependent Electrode-Electrolyte Interface for Ni-Rich Positive Electrodes in Li-Ion Batteries journal January 2019
Kinetics-Controlled Degradation Reactions at Crystalline LiPON/Li(x)CoO(2) and Crystalline LiPON/Li-metal Interfaces text January 2018

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