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Reducing volume expansion in micro silicon anodes via aramid nanofibers for stable lithium-ion batteries
Qingqing Liu1, Wei Tang1, Chen Yang1
1College of Polymer Science & Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Cheng Du, 610065, P. R. China. fengchen@scu.edu.cn.
Chemical Communications (Cambridge, England)
|May 31, 2023
Abstract:
The aramid nanofibers form networks on micro silicon particles (ANF-SMPs) by cryofixation and acid-induced protonation, whose zongzi-like wrapping structure reduces volume expansion during (de)lithiation. The obtained ANF-SMP electrode achieves a high capacity retention of 90.7% after 100 cycles at 0.5C, which maps a promising future for anodes with a long lifespan.
