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Title: Fast Mg2+ diffusion in Mo3(PO4)3O for Mg batteries

Journal Article · · ChemComm
DOI:https://doi.org/10.1039/c7cc02903a· OSTI ID:1475005
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [2];  [3];  [4];  [4]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Dept. of Materials Science and Engineering
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Leadership Computing Facility
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division; Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Engineering

In this work, we identify a new potential Mg battery cathode structure Mo3(PO4)3O, which is predicted to exhibit ultra-fast Mg2+ diffusion and relatively high voltage based on first-principles density functional theory calculations. Nudged elastic band calculations reveal that the migration barrier of the percolation channel is only ~80 meV, which is remarkably low, and comparable to the best Li-ion conductors. This low barrier is verified by ab initio molecular dynamics and kinetic Monte Carlo simulations. The voltage and specific energy are predicted to be ~1.98 V and ~173 W h kg-1, respectively. If confirmed by experiments, this material would have the highest known Mg mobility among inorganic compounds.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357
OSTI ID:
1475005
Journal Information:
ChemComm, Vol. 53, Issue 57; ISSN 1359-7345
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 21 works
Citation information provided by
Web of Science

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Cited By (5)

Modeling Diffusion in Functional Materials: From Density Functional Theory to Artificial Intelligence journal July 2019
Controlled hydroxy-fluorination reaction of anatase to promote Mg 2+ mobility in rechargeable magnesium batteries journal January 2018
Computational investigation of chalcogenide spinel conductors for all-solid-state Mg batteries journal January 2020
First-principles study of VPO 4 O as a cathode material for rechargeable Mg batteries journal January 2019
Potassium Salts Based Non-Aqueous Electrolytes for Electrical Double Layer Capacitors: A Comparison with LiPF 6 and NaPF 6 Based Electrolytes journal January 2018