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Achieving ultrahigh initial Coulombic efficiency in SnBi/C anode for sodium-ion batteries via interfacial engineering
Chunting Wang1, Qian Yao2, Long Su3
1School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P.R. China. yingchyan07@163.com.
Chemical Communications (Cambridge, England)
|April 22, 2026
Abstract
None:
The designed deep-eutectic Sn-Bi bimetallic carbon composite microspheres (SnBi/C) with abundant phase boundaries, effectively alleviate volume deformation during sodium (de)intercalation. Accordingly, the anode fabricated with poly(ethylene oxide) binder delivers an ultrahigh initial Coulombic efficiency of 95.4%, along with high reversible capacity and excellent cycling stability.
