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Updated: Jun 4, 2026
06:58
Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Carbon Interlayer with Uniformly Anchored ZnO Nanoparticles: Surface-Energy-Driven Coble Creep for Practical
Joonhyeok Park1, Jeongheon Kim1, Seungwoo Lee1
1Department of Energy Engineering, Hanyang University, Seoul, Republic of Korea.
Summary
This study introduces a cost-effective zinc oxide-carbon composite interlayer for anode-free solid-state batteries (AFSSBs). The novel interlayer enhances energy density and electrochemical stability, addressing key challenges in AFSSB technology.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Anode-free solid-state batteries (AFSSBs) offer high energy density and safety but face challenges in cost and performance.
- Developing cost-effective materials and manufacturing methods is crucial for AFSSB commercialization.
Purpose of the Study:
- To demonstrate cost-effective and high-energy-density AFSSBs using a novel zinc oxide-carbon composite interlayer.
- To investigate the role of the composite interlayer in improving lithium deposition and battery cycling stability.
Main Methods:
- Synthesis of a zinc oxide-carbon composite interlayer (ZnO@C) using electron-beam (e-beam) irradiation.
- Characterization of the interlayer's nanoscale morphology and chemical anchoring of ZnO nanoparticles (NPs).
- Electrochemical testing of AFSSBs with the ZnO@C interlayer, including cycling performance and Coulombic efficiency.
Main Results:
- The ZnO@C interlayer features homogeneously dispersed, chemically anchored ZnO NPs (<5 nm) on a carbon host.
- ZnO NPs effectively lower the reaction energy barrier for lithium and act as a buffer layer.
- The interlayer promotes finer lithium nuclei formation, improving creep behavior and suppressing NP agglomeration.
- AFSSBs with ZnO@C anodes achieved stable Coulombic efficiency (>99.8%) and 69.6% cycle retention after 300 cycles.
Conclusions:
- The e-beam synthesized ZnO@C interlayer is a promising strategy for developing high-performance, cost-effective AFSSBs.
- Chemical anchoring of ZnO NPs is key to maintaining interlayer integrity and enhancing electrochemical stability.
- This approach significantly improves the energy density and cycle life of anode-free solid-state batteries.
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