@article{Liang2026, 
author = {Ying Liang and Chuangjie Guo and Ying Qi and Hetian Chen and Haocheng Yuan and Dengfeng Yu and Peipei Ding and Yue Li and Hong Liu and Yaoyu Ren and Xue Zhang and Ce-Wen Nan},
title = {Enhanced ion conductivity and stability against Li metal in Dy3+-doped Li2ZrCl6 electrolytes for high-performance all-solid-state batteries},
year = {2026},
journal = {Journal of Materiomics},
volume = {12},
number = {3},
keywords = {Solid-state batteries, Interfacial stability, Halide electrolyte, Heterovalent cation doping, Cost-effective materials},
url = {https://www.sciopen.com/article/10.1016/j.jmat.2026.101178},
doi = {10.1016/j.jmat.2026.101178},
abstract = {The development of chloride-based solid-state electrolytes faces significant challenges in achieving an optimal balance among ionic conductivity, compatibility with Li metal, and cost-effectiveness. Herein, a novel Dy3+-doped Li2ZrCl6 (Li2+xZr1−xDyxCl6) halide electrolyte is rationally designed via mechanochemical synthesis. By partially substituting Zr4+ with larger Dy3+, the optimized Li2.25Zr0.75Dy0.25Cl6 exhibits: (1) Superior ionic conductivity of 1.54 mS/cm (a 4.4-fold increase over pristine Li2ZrCl6) after low-temperature annealing, (2) 3D Li+ transport pathways confirmed by DFT calculations, and (3) suppressed reduction of Zr4+ at the Li metal interface, extending symmetric cell cycling to 500 h (0.2 mA/cm2). Synchrotron XAFS and XPS/TOF-SIMS analyses reveal that Dy3+ doping broadens Li+ migration channels and inhibits elemental Zr formation. The LiCoO2-based all-solid-state lithium batteries exhibit superior cycling stability (81.4% capacity retention at 1000 cycles) and outstanding rate performance (82.9 mA·h·g−1 at 3 C). This work presents a paradigm for designing efficient and economical halide solid-state electrolytes.}
}