Entropy stabilized cubic Li7La3Zr2O12 with reduced lithium diffusion activation energy: studied using solid-state NMR spectroscopy

Juntian Fan; Tao Wang; Craig A Bridges; Albina Y Borisevich; Carlos A Steren; Pengzhen Li; Bishnu P Thapaliya; Chi-Linh Do-Thanh; Zhenzhen Yang; Yating Yuan; Sheng Dai

doi:10.1039/d3ra02206d

Entropy stabilized cubic Li₇La₃Zr₂O₁₂ with reduced lithium diffusion activation energy: studied using solid-state NMR spectroscopy

RSC Adv. 2023 Jul 4;13(29):19856-19861. doi: 10.1039/d3ra02206d. eCollection 2023 Jun 29.

Authors

Juntian Fan^{1

2}, Tao Wang², Craig A Bridges², Albina Y Borisevich³, Carlos A Steren¹, Pengzhen Li⁴, Bishnu P Thapaliya², Chi-Linh Do-Thanh¹, Zhenzhen Yang², Yating Yuan², Sheng Dai^{1

2}

Affiliations

¹ Department of Chemistry, University of Tennessee Knoxville TN 37996 USA.
² Chemical Sciences Division, Oak Ridge National Laboratory Oak Ridge 37831 USA [email protected].
³ Center for Nanophase Materials Sciences, Oak Ridge National Laboratory Oak Ridge 37831 USA.
⁴ Department of Agricultural and Resource Economics, University of Tennessee Knoxville TN 37996 USA.

Abstract

Stabilizing cubic polymorph of Li₇La₃Zr₂O₁₂ at low temperatures is challenging and currently limited to mono- or dual-ion doping with aliovalent ions. Herein, a high-entropy strategy at the Zr sites was deployed to stabilize the cubic phase and lower the lithium diffusion activation energy, evident from the static ⁷Li and MAS ⁶Li NMR spectra.