Authors
Haichen Huang, Yaoyao Liu, Yushuang Yang, Lequan Deng, Xingmin Yu, Haoying Qi, Xianglin Yin, Yuanhua Sang, Jian-Jun Wang, Hong Liu, Hao Chen
Published in
Advanced materials (Deerfield Beach, Fla.). Pages e75287. Oct 05, 2026. Epub Oct 05, 2026.
Abstract
Aluminum-ion batteries (AIBs) are promising for large-scale energy storage owing to their elemental abundance, low cost, safety, and high anode capacity. However, their development is hindered by the limited reversibility of Al plating/stripping on Al metal anodes and cathode structural degradation under high-voltage operation, resulting in short cycle life and limited energy density. These challenges originate from an incomplete understanding of how interphase components and properties regulate electrode reactions. Here, we systematically investigate the interphase properties in AIBs and reveal that AlF3 exhibits the highest interfacial energy, mechanical strength against dendrite growth, and electrochemical stability with electron-blocking capability against parasitic reactions, making it an ideal artificial interphase component. Based on these findings, AlF3-enriched artificial interphases are constructed in Al||graphene batteries, enabling 99.9% Al plating/stripping Coulombic efficiency with uniform deposition morphology. The Al||graphene full cell delivers a high specific capacity of 122.6 mAh g-1, ultrahigh-rate capability (817 C, charged in 2.936 s), and long-term cyclability exceeding 100 000 cycles. This AlF3-enriched interphase strategy establishes fundamental principles for designing high-performance AIBs.
PMID:
42834465
Bibliographic data and abstract were imported from PubMed on 06 Oct 2026.
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