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Title: Surface structure and equilibrium particle shape of the LiMn 2 O 4 spinel from first-principles calculations

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [1]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

First-principles density functional calculations were used to calculate surface properties of the LiMn2O4 spinel. The calculations were benchmarked to obtain the correct semiconducting, Jahn-Teller distorted electronic ground state of bulk LiMn2O4 and, using the same parameters, the predominant low-index polar surface facets (100), (110), and (111) were calculated to study their structure and stability. Following an investigation of possible surface terminations as well as surface layer reconstructions we find that the (111) LMO surface stabilizes through a targeted site exchange of the undercoordinated surface Mn cations with fully coordinated tetrahedral subsurface Li cations, effectively creating a partial inverse spinel arrangement at the surface. This reconstruction renders the (111) facet the most stable among the investigated facets. Here, the equilibrium (Wulff) shape of a LiMn2O4 particle was constructed and exhibits a cubo-octahedral shape with predominant (1 1 1) facets, in agreement with common experimental findings for the spinel structure.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1511355
Alternate ID(s):
OSTI ID: 1102361
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 87, Issue 7; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 111 works
Citation information provided by
Web of Science

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Cited By (15)

Surface Structural Transition Induced by Gradient Polyanion-Doping in Li-Rich Layered Oxides: Implications for Enhanced Electrochemical Performance journal May 2016
Impact of High Valence State Cation Ti/Ta Surface Doping on the Stabilization of Spinel LiNi 0.5 Mn 1.5 O 4 Cathode Materials: A Systematic Density Functional Theory Investigation journal April 2018
Nonequilibrium Pathways during Electrochemical Phase Transformations in Single Crystals Revealed by Dynamic Chemical Imaging at Nanoscale Resolution journal December 2014
Suppressing Manganese Dissolution from Lithium Manganese Oxide Spinel Cathodes with Single-Layer Graphene journal June 2015
Computer Simulation of Cathode Materials for Lithium Ion and Lithium Batteries: A Review journal September 2018
Unravelling structural ambiguities in lithium- and manganese-rich transition metal oxides journal October 2015
Size-dependent kinetics during non-equilibrium lithiation of nano-sized zinc ferrite journal January 2019
A perspective on the high-voltage LiMn1.5Ni0.5O4 spinel cathode for lithium-ion batteries journal January 2014
First-principles study on thermodynamic stability of the hybrid interfacial structure of LiMn 2 O 4 cathode and carbonate electrolyte in Li-ion batteries journal January 2018
Effect of composition on the structure of lithium- and manganese-rich transition metal oxides journal January 2018
Influence of particle size on the apparent electrocatalytic activity of LiMn 2 O 4 for oxygen evolution journal January 2019
Understanding the loss of electrochemical activity of nanosized LiMn 2 O 4 particles: a combined experimental and ab initio DFT study journal January 2018
Ethylene carbonate adsorption on the major surfaces of lithium manganese oxide Li 1−x Mn 2 O 4 spinel (0.000 < x < 0.375): a DFT+ U -D3 study journal January 2020
Effects of surface stability on the morphological transformation of metals and metal oxides as investigated by first-principles calculations journal September 2015
Theoretical Insights into Oxidation States of Transition Metals at (001) and (111) LiNi 0.5 Mn 1.5 O 4 Spinel Surfaces journal January 2018

Figures / Tables (7)


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