Unveiling the Critical Role of Polymeric Binders for Silicon Negative Electrodes in Lithium-Ion Full Cells
| Autor: | Yikai Wang, Tao Chen, Long Zhang, Jiagang Xu, Mohanad N. Al-Shroofy, Yang-Tse Cheng |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Silicon 020209 energy chemistry.chemical_element Nanoparticle Nanotechnology 02 engineering and technology 021001 nanoscience & nanotechnology Durability Ion chemistry.chemical_compound chemistry Nafion Electrode 0202 electrical engineering electronic engineering information engineering Forensic engineering Energy density General Materials Science Lithium 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 9:3562-3569 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.6b11121 |
| Popis: | Because of its natural abundance and high theoretical specific capacity (3579 mAh g–1, based on Li15Si4), silicon and its composites have been extensively studied as the negative electrode for future high energy density lithium-ion batteries. While rapid failure due to the significant volumetric strain of lithium–silicon reactions makes bulk silicon unsuitable for practical applications, silicon nanoparticles can sustain the large volume changes without fracturing. However, polymeric binders are usually required to maintain the structural integrity of electrodes made of particles. Recent lithium-ion half-cell tests have shown that lithium ion-exchanged Nafion (designated as Li–Nafion) and sodium alginate are highly promising binders for nanoparticle silicon electrodes. Nevertheless, there is scant information on the performance and durability of these electrodes in full cell tests which are likely to reveal the role of binders under more realistic conditions. This work focuses on understanding the role of... |
| Databáze: | OpenAIRE |
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