@article{Xia2026, 
author = {Kang Xia and Zhengyin Yao and Zhen Liu and Shuyue Luo and Haoru Xie and Xurui Li and Xiang Yao and Guodong Liang and Peng Zhang},
title = {Hierarchical ionic networks in polymer electrolyte boost high-voltage solid-state Li batteries with stable interfaces and long cycling},
year = {2026},
journal = {Nano Research Energy},
volume = {5},
pages = {e9120181},
keywords = {solid-state lithium metal batteries, polymer electrolyte, hierarchical ionic networks, interfacial stability, high-voltage cycling stability},
url = {https://www.sciopen.com/article/10.26599/NRE.2025.9120181},
doi = {10.26599/NRE.2025.9120181},
abstract = {Solid-state lithium metal batteries (SLMBs) require quasi solid polymer electrolytes (QSSPEs) with high ionic conductivity, interfacial stability, and oxidative resistance. In this study, a QSSPE membrane (MP46, MG30:LiTFSI:succinonitrile=10:4:6 by weight) with a wide electrochemical window of 5.1 V is designed to address these challenges. Complementary infrared spectroscopy, small-angle X-ray scattering and electron microscopy analysis reveals a hierarchical ionic conductive network, comprising sphere-like nanostructures embedded in microphase-segregated architectures. This architecture enhances lithium-ion transport while maintaining mechanical integrity. The strong interfacial adhesion of MP46 with lithium metal supports stable lithium plating and stripping for over 800 h at 0.2 mA·cm–2, mitigating dendrite formation. When paired with LiFePO4 and LiCoO2 cathodes, MP46 sustains prolonged cycling, with capacity retention of 80.1% after 1400 cycles at 2 C and 92.1% after 200 cycles at 4.5 V, respectively. Pouch-type cells further demonstrate mechanical flexibility and operational safety under deformation. These results indicate that MP46 enables stable high-energy-density SLMBs, providing insights into the design of next-generation polymer electrolytes.}
}