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$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$

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Published on: November 10, 2014

Programmable DNA Interphase Layers for High-Performance Anode-Free Lithium Metal Batteries.

Zhaofeng Ouyang¹, Yan Wang¹, Shuo Wang¹

¹Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, and Key Laboratory of Green and High-End Utilization of Salt Lake Resources (Chinese Academy of Sciences), Shanghai Jiao Tong University, Shanghai, 200240, China.

Advanced Materials (Deerfield Beach, Fla.)

|March 29, 2024

Summary

Deoxyribonucleic acid (DNA) enables high-performance anode-free lithium metal batteries by creating a programmable interphase layer. This DNA layer improves lithium plating and stripping, enhancing cycling stability for advanced energy storage.

Keywords:

DNA interphase layer anode‐free battery high programmability high reversibility ultrathin interphase layer

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Area of Science:

Materials Science
Electrochemistry
Biomaterials

Background:

Anode-free lithium metal batteries offer high energy density but suffer from poor cycling and rate performance due to Li plating/stripping issues.
Developing stable interphase layers is crucial for overcoming the limitations of lithium metal batteries.

Purpose of the Study:

To investigate the potential of deoxyribonucleic acid (DNA) as a programmable interphase layer for anode-free lithium metal batteries.
To enhance the reversibility and kinetics of lithium plating and stripping.

Main Methods:

Utilizing DNA as an ultrathin interphase layer on copper foil.
Fabricating anode-free LiFePO4 full batteries with the DNA interphase.
Evaluating electrochemical performance, including cycling stability and Coulombic efficiency (CE).

Main Results:

DNA interphase facilitates homogeneous Li+ flux via transient Li-N bonds, improving plating/stripping kinetics.
Achieved excellent reversibility at a high areal current density of 15 mA cm-2.
Anode-free batteries with DNA interphase demonstrated high CEs (≈99.1%) over 400 cycles, a significant improvement over bare copper foil.

Conclusions:

DNA serves as a highly programmable and effective interphase material for anode-free lithium metal batteries.
This approach offers a new strategy for battery innovation, emphasizing programmability, sustainability, and electrochemical performance.