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A Bioinspired Coating for Stabilizing Li Metal Batteries.

Chenxu Wang¹, Chunhua Ying¹, Jing Shang¹

¹School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States.

ACS Applied Materials & Interfaces

|September 13, 2022

Summary

Researchers developed a bovine serum albumin (BSA) coating to stabilize lithium metal anodes in batteries. This protein coating regulates ion transport and suppresses dendrite growth, enhancing battery performance and stability.

Keywords:

battery bioinspired bovine serum albumin lithium anode protein

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Area of Science:

Materials Science
Electrochemistry
Biomaterials

Background:

Bovine serum albumin (BSA) possesses abundant charges and functional groups for metallic ion transport.
Metallic ion transport is crucial for stabilizing lithium metal anodes in lithium metal batteries (LMBs).

Purpose of the Study:

To develop a BSA protein coating for stabilizing lithium anodes.
To regulate Li+ transport and suppress lithium dendrite growth in LMBs.

Main Methods:

Coating application of BSA on lithium metal anode.
Experimental characterization of coating interactions and stability.
Electrochemical performance testing of Li|Cu, Li|Li, and LiFePO4|Li cells.

Main Results:

BSA coating demonstrates strong interactions with lithium metal and enhances electrolyte wetting.
Reduced electrolyte/lithium side reactions and significant suppression of lithium dendrite formation.
Improved electrochemical stability and performance in various battery configurations.

Conclusions:

BSA protein coating effectively stabilizes lithium metal anodes by leveraging its natural ion transport capabilities.
Protein-based materials offer a promising avenue for enhancing the electrochemical performance of energy storage systems.
This study provides a foundation for designing bio-inspired materials for advanced batteries.