Academic Journal of Materials & Chemistry, 2025, 6(1); doi: 10.25236/AJMC.2025.060107.
Zenan Zhou, Dongliang Yan
School of Materials and Environment, Guangxi Minzhu University, Nanning, Guangxi, China
Silicon monoxide (SiOx) material is considered a promising contender for anodes in high-power lithium-ion batteries owing to its high specific capacity. Nevertheless, the substantial volume fluctuation during the lithiation/delithiation cycles of SiOx anodes leads to reduced initial coulombic efficiency (ICE) and capacity retention, hindering its practical implementation. To tackle this challenge, researchers have pre-fabricated a sturdy ionic conductive interface abundant in LiF, Li2C2O4, LiBO2, and Li2B4O7 via a calcination process. This interface layer, distinguished by its high Young's modulus and swift Li+ conductivity, can efficiently accommodate the plastic deformation of SiOx anodes, curtail parasitic reactions, and preserve electrode integrity. The enhanced SiOx (M-SiOx500°C) anode demonstrates improved ICE, superior capacity retention, and outstanding rate capability. A complete cell paired with a LiNi0.8Mn0.1Co0.1O2 cathode maintains a capacity level of 89.7% after 200 cycles. This study highlights the importance of pre-fabricating artificial solid-electrolyte interphase (SEI) layers and modifying interfacial chemistry to enhance the performance of SiOx-based anodes, representing a notable step forward in the broad adoption of SiOx-based anodes.
Lithium difluorobis(oxalato)borate; Silicon suboxide; Lithium-ion Batteries; Interface engineering
Zenan Zhou, Dongliang Yan. Constructing Robust and Efficient Ionic Conductive Interfaces for Utilizing SiOx Anodes in Advanced Lithium-Ion Batteries with High Energy Density. Academic Journal of Materials & Chemistry(2025), Vol. 6, Issue 1: 59-65. https://doi.org/10.25236/AJMC.2025.060107.
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