MIL‐88B‐NH 2 (Fe)‐Based Fiber‐Reinforced Polymer Electrolytes for Li‐Metal Batteries
Year: 2026
Type: article
Abstract: The rational design of solid fillers is an effective route to improve the electrochemical performance of solid polymer electrolytes (SPEs). Here we demonstrate that an Fe‐based metal organic framework, MIL‐88B‐NH 2 (Fe), with a fibrous structure, enhances both interfacial stability and ion transport when incorporated into SPEs. MIL‐88B‐NH 2 (Fe) is rich in open metal sites, which increase the ionic conductivity and the Li + transference number. In addition, a stable Fe 3+ /Fe 2+ interfacial layer derived from the MOF metal nodes provides electrostatic shielding, helping to suppress Li dendrite growth and maintain uniform Li deposition. As a result, the designed SPEs achieve an ionic conductivity of 1.1 × 10 −3 S cm −1 at 60°C and a Li + transference number of 0.33, enabling uniform Li + flux and stable cycling. Pouch‐type cells retain 153.7 mAh g −1 after 1500 cycles at 0.5 C and 60°C, highlighting the practical robustness of this electrolyte design.
Source: Small Structures
Authors: Yifan Xu, Ting Zhang, Ruo Zhao, Zhiyu Chen, Lei Gao, Junliang Zhao, Yin Cui, Juncao Bian, Songbai Han
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,110
Awards: G1270780983, G8930576346
OpenAlex ID: W7149332017