A sodiophilic amyloid fibril modified separator for dendrite-free sodium metal batteries.

Wang, Jinming; Gao, Yan; Liu, Di; Zou, Guodong; Li, Lanjie; Fernandez, Carlos; Zhang, Qingrui; Peng, Qiuming

Abstract

Sodium (Na) batteries are being considered as prospective candidates for the next generation of secondary batteries in contrast to lithium-based batteries, due to their high raw material abundance, low cost, and sustainability. However, the unfavorable growth of Na metal deposition and severe interfacial reactions have prevented their large-scale applications. Here we propose a vacuum filtration strategy through amyloid fibril modified glass fiber separators to address these issues. The modified symmetric cell can be cycled for 1800 h, surpassing the performance of previously reported Na-based electrodes under an ester-based electrolyte. Moreover, the Na/ Na V (PO ) full cell with a sodiophilic amyloid fibril modified separator exhibits a capacity retention of 87.13% even after 1000 cycles. Both experimental and theoretical results show sodiophilic amyloid fibril homogenizes electric field and Na ion concentration, fundamentally inhibiting dendrite formation. Simultaneously, the glutamine amino acids in the amyloid fibril have the highest adsorption energy for Na, resulting in the formation of a stable Na N and NaN O -rich solid electrolyte interface film on the anode during cycling. This work provides not only a possible pathway to solve dendrite problem in metal batteries using environmental-friendly biomacromolecular materials, but also a new direction for expanding biomaterial applications.

Citation

WANG, J., GAO, Y., LIU, D., ZOU, G., LI, L., FERNANDEZ, C., ZHANG, Q., and PENG, Q. 2024. A sodiophilic amyloid fibril modified separator for dendrite-free sodium metal batteries. Advanced materials [online], 36(11), article 2304942. Available from: https://doi.org/10.1002/adma.202304942

• Journal Article Type: Article
• Acceptance Date: Jul 10, 2023
• Online Publication Date: Jul 12, 2023
• Publication Date: Mar 14, 2024
• Deposit Date: Jul 31, 2023
• Publicly Available Date: Jul 13, 2024
• Journal: Advanced materials
• Print ISSN: 0935-9648
• Electronic ISSN: 1521-4095
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 36
• Issue: 11
• Article Number: 2304942
• DOI: https://doi.org/10.1002/adma.202304942
• Keywords: Amyloid fibril; Na metal battery; Amino acids; SEI composition; Electric field distribution
• Public URL: https://rgu-repository.worktribe.com/output/2026720
• Related Public URLs: https://rgu-repository.worktribe.com/output/2028721 (Dataset)