Li0.625Al0.125H0.25Cl0.75O0.25 Superionic Conductor with Disordered Rock-Salt Structure
Abstract
Solid-state Li-ion conductors are of broad interest in electrochemical energy storage, especially in solid-state Li batteries that serve as a promising alternative for the next-generation safe and high-energy-density batteries. Exploring solid-state superionic conductors is significant for the development of solid-state Li batteries with high performance. Herein, we report a disordered rock-salt (A1B1)-structured solid electrolyte (Li0.625Al0.125H0.25)(Cl0.75O0.25) (abbr. LAHCO) that was synthesized using Li2OHCl and LiAlCl4 as precursors. Neutron diffraction reveals that Li, Al, and H atoms occupy the A sites and O and Cl atoms occupy the B sites in the A1B1 structure for pure LAHCO. The LAHCO compound with excess LiAlCl4 shows the highest Li+ ionic conductivity of ~10–4 S cm–1 at room temperature due to the disordering induced by configurational entropy as well as the entropy of mixing. Moreover, LAHCO–LiAlCl4 solid electrolyte exhibits a stable polarization voltage under a current density of 5–50 μA cm–2 in Li symmetric cells. Furthermore, this work not only explicates the importance of Li-ion conductors with a rock-salt structure but also contributes toward the development of solid-state Li-ion conductors for broad applications.
- Authors:
-
[2];
[4];
[5];
[2]
- Shanghai University (China); Univ. of Louisville, KY (United States)
- Univ. of Louisville, KY (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Shanghai University (China)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- OSTI Identifier:
- 1839969
- Alternate Identifier(s):
- OSTI ID: 1840198
- Grant/Contract Number:
- AC02-06CH11357; AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- ACS Applied Energy Materials
- Additional Journal Information:
- Journal Volume: 4; Journal Issue: 8; Journal ID: ISSN 2574-0962
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 25 ENERGY STORAGE; solid electrolyte; rock-salt structure; disordered; ionic conductivity; Li metal; entropy; precursors; chemical structure; electrical conductor
Citation Formats
Zhang, Qian, Arnold, William, Hood, Zachary D., Li, Yang, DeWees, Rachel, Chi, Miaofang, Chen, Zhiwen, Chen, Yan, and Wang, Hui. Li0.625Al0.125H0.25Cl0.75O0.25 Superionic Conductor with Disordered Rock-Salt Structure. United States: N. p., 2021.
Web. doi:10.1021/acsaem.1c01011.
Zhang, Qian, Arnold, William, Hood, Zachary D., Li, Yang, DeWees, Rachel, Chi, Miaofang, Chen, Zhiwen, Chen, Yan, & Wang, Hui. Li0.625Al0.125H0.25Cl0.75O0.25 Superionic Conductor with Disordered Rock-Salt Structure. United States. https://doi.org/10.1021/acsaem.1c01011
Zhang, Qian, Arnold, William, Hood, Zachary D., Li, Yang, DeWees, Rachel, Chi, Miaofang, Chen, Zhiwen, Chen, Yan, and Wang, Hui. Mon .
"Li0.625Al0.125H0.25Cl0.75O0.25 Superionic Conductor with Disordered Rock-Salt Structure". United States. https://doi.org/10.1021/acsaem.1c01011. https://www.osti.gov/servlets/purl/1839969.
@article{osti_1839969,
title = {Li0.625Al0.125H0.25Cl0.75O0.25 Superionic Conductor with Disordered Rock-Salt Structure},
author = {Zhang, Qian and Arnold, William and Hood, Zachary D. and Li, Yang and DeWees, Rachel and Chi, Miaofang and Chen, Zhiwen and Chen, Yan and Wang, Hui},
abstractNote = {Solid-state Li-ion conductors are of broad interest in electrochemical energy storage, especially in solid-state Li batteries that serve as a promising alternative for the next-generation safe and high-energy-density batteries. Exploring solid-state superionic conductors is significant for the development of solid-state Li batteries with high performance. Herein, we report a disordered rock-salt (A1B1)-structured solid electrolyte (Li0.625Al0.125H0.25)(Cl0.75O0.25) (abbr. LAHCO) that was synthesized using Li2OHCl and LiAlCl4 as precursors. Neutron diffraction reveals that Li, Al, and H atoms occupy the A sites and O and Cl atoms occupy the B sites in the A1B1 structure for pure LAHCO. The LAHCO compound with excess LiAlCl4 shows the highest Li+ ionic conductivity of ~10–4 S cm–1 at room temperature due to the disordering induced by configurational entropy as well as the entropy of mixing. Moreover, LAHCO–LiAlCl4 solid electrolyte exhibits a stable polarization voltage under a current density of 5–50 μA cm–2 in Li symmetric cells. Furthermore, this work not only explicates the importance of Li-ion conductors with a rock-salt structure but also contributes toward the development of solid-state Li-ion conductors for broad applications.},
doi = {10.1021/acsaem.1c01011},
journal = {ACS Applied Energy Materials},
number = 8,
volume = 4,
place = {United States},
year = {Mon Jul 19 00:00:00 EDT 2021},
month = {Mon Jul 19 00:00:00 EDT 2021}
}
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