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Updated: Jul 12, 2026
Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
Published on: March 7, 2018
High-Entropy Phosphide-Polymer Nanointerfaces Enable Adaptive Li+ Transport for High-Performance Solid-State Li Metal
Jindan Zhang1, Chuyi Cai1, Chenyuan Li1
1Fujian Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian, P. R. China.
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Solid polymer electrolytes (SPEs) hold broad prospects in solid-state lithium metal batteries due to their facile processability, favorable interfacial contact and flexibility, yet their practical application is severely hampered by low Li+ conductivity. Although introducing nanofillers in SPEs to promote Li+ decoupling can accelerate ion transport, interfacial heterogeneity of filler-polymer nanointerfaces causes an imbalance between their interaction forces toward Li+, hindering the Li+ transport. Herein, a high-entropy phosphide-polymer hybrid electrolyte (HEP-SPE) is developed. The HEPs provide strong Li+ interactions to counteract Li+-polymer coupling for rapid transport in site-matching nanointerfaces, while the high-entropy surface weakens electronic localization differences to reduce migration barriers, enabling adaptive rapid Li+ migration in site-mismatched nanointerfaces. Therefore, the HEP-SPE exhibits excellent ion transport (1.63 mS cm- 1 Li+ conductivity, 0.62 transference number) and promotes a stable electrolyte/anode interface. Symmetric batteries based on it stably cycle over 2600 and 1300 h at 0.2 and 0.5 mA cm- 2, respectively.
