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Title: Conduction below 100 °C in nominal Li 6ZnNb 4O 14

Abstract

The increasing demand for a safe rechargeable battery with a high energy density per cell is driving a search for a novel solid electrolyte with a high Li + or Na + conductivity that is chemically stable in a working Li-ion or Na-ion battery. Li 6ZnNb 4O 14 has been reported to exhibit a σ Li > 10 -2 S cm -1 at 250 °C, but to disproportionate into multiple phases on cooling from 850 °C to room temperature. An investigation of the room-temperature Li-ion conductivity in a porous pellet of a multiphase product of a nominal Li 6ZnNb 4O 14 composition is shown to have bulk σ Li 3.3 x 10 -5 S cm -1 at room temperature that increases to 1.4 x 10 -4 S cm -1 by 50 °C. 7Li MAS NMR spectra were fitted to two Lorentzian lines, one of which showed a dramatic increase with increasing temperature. As a result, a test for water stability indicates that Li + may move to the particle and grain surfaces to react with adsorbed water as occurs in the garnet Li + conductors.

Authors:
 [1];  [1];  [2]; ;  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Univ. of Texas, Austin, TX (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1237633
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Materials Science
Additional Journal Information:
Journal Volume: 51; Journal Issue: 1; Journal ID: ISSN 0022-2461
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; 36 MATERIALS SCIENCE

Citation Formats

Li, Yunchao, Paranthaman, Mariappan Parans, Gill, Lance W., Edward W. Hagaman, Wang, Yangyang, Sokolov, Alexei P., Dai, Sheng, Ma, Cheng, Chi, Miaofang, Veith, Gabriel M., Manthiram, Arumugam, and Goodenough, John B. Conduction below 100 °C in nominal Li6ZnNb4O14. United States: N. p., 2015. Web. doi:10.1007/s10853-015-9408-z.
Li, Yunchao, Paranthaman, Mariappan Parans, Gill, Lance W., Edward W. Hagaman, Wang, Yangyang, Sokolov, Alexei P., Dai, Sheng, Ma, Cheng, Chi, Miaofang, Veith, Gabriel M., Manthiram, Arumugam, & Goodenough, John B. Conduction below 100 °C in nominal Li6ZnNb4O14. United States. doi:10.1007/s10853-015-9408-z.
Li, Yunchao, Paranthaman, Mariappan Parans, Gill, Lance W., Edward W. Hagaman, Wang, Yangyang, Sokolov, Alexei P., Dai, Sheng, Ma, Cheng, Chi, Miaofang, Veith, Gabriel M., Manthiram, Arumugam, and Goodenough, John B. Tue . "Conduction below 100 °C in nominal Li6ZnNb4O14". United States. doi:10.1007/s10853-015-9408-z. https://www.osti.gov/servlets/purl/1237633.
@article{osti_1237633,
title = {Conduction below 100 °C in nominal Li6ZnNb4O14},
author = {Li, Yunchao and Paranthaman, Mariappan Parans and Gill, Lance W. and Edward W. Hagaman and Wang, Yangyang and Sokolov, Alexei P. and Dai, Sheng and Ma, Cheng and Chi, Miaofang and Veith, Gabriel M. and Manthiram, Arumugam and Goodenough, John B.},
abstractNote = {The increasing demand for a safe rechargeable battery with a high energy density per cell is driving a search for a novel solid electrolyte with a high Li+ or Na+ conductivity that is chemically stable in a working Li-ion or Na-ion battery. Li6ZnNb4O14 has been reported to exhibit a σ Li > 10-2 S cm-1 at 250 °C, but to disproportionate into multiple phases on cooling from 850 °C to room temperature. An investigation of the room-temperature Li-ion conductivity in a porous pellet of a multiphase product of a nominal Li6ZnNb4O14 composition is shown to have bulk σ Li 3.3 x 10-5 S cm-1 at room temperature that increases to 1.4 x 10-4 S cm-1 by 50 °C. 7Li MAS NMR spectra were fitted to two Lorentzian lines, one of which showed a dramatic increase with increasing temperature. As a result, a test for water stability indicates that Li+ may move to the particle and grain surfaces to react with adsorbed water as occurs in the garnet Li+ conductors.},
doi = {10.1007/s10853-015-9408-z},
journal = {Journal of Materials Science},
number = 1,
volume = 51,
place = {United States},
year = {2015},
month = {9}
}

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