Hierarchical porous framework of Si-based electrodes for minimal volumetric expansion.
basic_science · Level V
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- Record sourced from PubMed, PMID 24623468.
- Also identified by DOI 10.1002/adma.201305781.
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Abstract
A tunable hierarchical porous framework is fabricated to house the volumetric changes outputted by Si. The nSi@cPAN/cPAN electrodes only expand by 14.3% at full initial lithiation and remain within 23% expansion from its uncycled state after 20 cycles with remarkable cycling stability and high coulombic efficiencies in excess of 99.5%.