Reducing volume expansion in micro silicon anodes <i>via</i> aramid nanofibers for stable lithium-ion batteries
Qingqing Liu, Wei Tang, Chen Yang, Wenlong Cai, Feng Chen, Qiang Fu
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.
Topics & Concepts
AramidAnodeNanofiberSiliconVolume expansionLithium (medication)Materials scienceIonVolume (thermodynamics)Chemical engineeringNanotechnologyComposite materialChemistryOptoelectronicsElectrodeOrganic chemistryFiberThermodynamicsPhysicsInternal medicineMedicineEndocrinologyPhysical chemistryEngineeringAdvancements in Battery MaterialsSupercapacitor Materials and FabricationAdvanced Battery Materials and Technologies