@article{Zhou2026, 
author = {Shiyue Zhou and Yafang Zhang and Hanchao Sun and Hongsong Zhang and Jie Zhang and Wenpeng Li and Dai Yang and Chenye Wang and Wenjia Wu and Jingtao Wang},
title = {Solvent molecule layer assisted rapid lithium ion transport in MOF pore for wide-temperature solid-state lithium battery},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {3},
pages = {94908216},
keywords = {solid-state lithium battery, solid-state electrolyte, ionic conductivity, metal-organic framework, wide-temperature range},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94908216},
doi = {10.26599/NR.2025.94908216},
abstract = {Two-dimensional metal-organic frameworks (2D MOFs), coupling the individual advantages of organic polymer with excellent flexibility and processability, as well as inorganic crystal with well-ordered and temperature-independent structure, are emerging solid-state electrolyte (SSE) materials for wide-temperature solid-state lithium batteries. However, present MOFs have seldom been directly utilized as SSEs, due to the insurmountable transport energy barrier and resultant low ionic conductivity. Here, we report a lamellar MOF electrolyte with high ionic conductivity over wide-temperature ranges through confining N,N-dimethylformamide (DMF) solvent into the ordered pore channel of 2D MOF lamellar framework. We demonstrate that, the fine-tuned microstructure of pore walls could induce the rearrangement of DMF solvent layer, forming long-range ordered and stable solvent layer along pore walls. The solvent layer then acts as low-energy-barrier lithium ion transport path, affording MOF SSE high ionic conductivity over wide-temperature ranges (2.87 × 10−4–1.58 × 10−3 S·cm−1 at −20–100 °C), surpassing most of the currently reported solid-state electrolytes. The MOF SSE also exhibits high tLi+ of 0.81 and low activation energy of 0.106 eV. Consequently, the assembled LiFePO4|Li half-cell can stably cycle over wide-temperature ranges, retaining high discharge specific capacities of 158.4 mAh·g−1 at −20 °C and 171.2 mAh·g−1 at 60 °C, respectively, after 300 cycles. This work offers an innovative approach for the design of advanced ion conductors towards wide-temperature solid-state lithium batteries.}
}