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Updated: Jul 12, 2026
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Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing
Published on: March 7, 2018
Anion-Solvent Dual-Sieving Effect Revolutionizes Li Deposition Kinetics for Garnet-Based Solid-State Lithium
Jiaxin Wu1,2, Zichang You1,2, Huayan Huang1,2
1The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, P.R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 9, 2026
Summary
A new composite interlayer (BN-ASDSI) enhances solid-state battery performance by stabilizing the lithium metal interface and improving ion transport, enabling higher critical current densities and longer cycle life for next-generation energy storage.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Solid-state batteries (SSBs) offer high theoretical energy density but face challenges with Li/solid-state electrolyte interfaces.
- Interfacial issues include poor contact, lithium dendrites, side reactions, and polarization, hindering practical application.
- Existing solutions often fail to address multiple interfacial problems simultaneously.
Purpose of the Study:
- To develop a multifunctional composite interlayer (BN-ASDSI) to overcome Li/solid-state electrolyte interfacial limitations in SSBs.
- To improve lithium-ion transport, suppress dendrite formation, and enhance interfacial stability.
- To demonstrate the practical viability of BN-ASDSI for high-performance SSBs.
Main Methods:
- Fabrication of a composite interlayer (BN-ASDSI) using a polymer scaffold, sultone-based electrolyte, and boron nitride (BN).
- Investigation of interfacial mechanisms, including anion anchoring and solvent-repelling properties.
- Electrochemical testing of symmetric cells and full cells (LiFePO4 and LiNi0.83Co0.12Mn0.05O2 cathodes) to evaluate performance metrics.
Main Results:
- BN-ASDSI demonstrated an anion-anchoring effect, promoting Li+ transport and forming a LiF-rich interface for stable Li metal.
- Symmetric cells achieved an ultrahigh critical current density of 8.8 mA cm-2.
- LiFePO4 SSBs operated for 1500 cycles at 6C with >92% capacity retention; high-loading NMC SSBs achieved 3.2 mAh cm-2 at 1C with 93% retention after 80 cycles.
Conclusions:
- The BN-ASDSI interlayer effectively addresses critical interfacial issues in solid-state batteries.
- This composite interlayer significantly enhances ionic conductivity, interfacial stability, and overall battery performance.
- BN-ASDSI shows great promise for the development of practical, high-energy-density solid-state batteries.
