Authors
Shiming Chen, Kai Yang, Wenguang Zhao, Wei Yang, Jiangxiao Li, Chenyu Yang, Zhikang Deng, Yue Zuo, Xiaohu Wang, Zu-Wei Yin, Junyang Liu, Meng Zhang, Feng Pan, Luyi Yang
Published in
Advanced materials (Deerfield Beach, Fla.). Pages e74536. Aug 05, 2026. Epub Aug 05, 2026.
Abstract
Constructing a robust solid electrolyte interphase (SEI) is a proven strategy to enhance the performance of Si-based anodes by accommodating severe volume swings and suppressing interfacial side reactions. However, existing strategies that rely solely on either chemical coating or electrochemical formation struggle to reconcile SEI uniformity and long-term stability. Here, we propose a synergistic strategy that integrates the interfacial modification with in situ regulated electrolyte decomposition. A conformal layer composed of LiF and Li3PO4 is pre-formed on SiOx anodes, where LiF serves as a stable mechanical framework for the inorganic-rich SEI, and Li3PO4 selectively adsorbs fluoroethylene carbonate (FEC), favoring the polymerization of FEC-derived species via interfacial enrichment to form the high-molecular-weight organic species. These electrochemically generated SEI components effectively compensate for the damage to the initial coating caused by volume expansion, enabling the SEI to possess both structural integrity and resilience. Consequently, the modified SiOx anode exhibits benchmark electrochemical performance, delivering excellent cycling stability (1086 mA h g-1, 81% capacity retention for 300 cycles at 0.8 A g-1) and high-rate capability (1010 mAh g-1 at 2.4 A g-1). This work establishes a precedent for the dynamic repair interphase design paradigm for high-capacity anodes.
PMID:
42554439
Bibliographic data and abstract were imported from PubMed on 05 Aug 2026.
Read full publication at:
Please sign in
to see all details.
Advertisement
Stats
- Recommendations n/a n/a positive of 0 vote(s)
- Views 2
- Comments 0