Abstract
Potential of silicon nanocages (Sin, n = 20, 24, 28, 32, 36, 40, 44, 48, 60, 70, 80 and 90) as anodes in batteries are examined. The thermal stability, ionization potentials, electron affinities, bond gap energies of Sin structures are investigated. Results shown when the numbers of Si atoms of nanocages are increased the IP, EGap and EA of Sin are decreased. The cell voltage and capacities of 12 silicon structures are investigated. The Vcell and CTheory of Sin in batteries in four sides of nanocage positions are higher than inner and outer positions. The Vcell of Sin structures in Li-ion batteries are 1.82–2.20 V and the CTheory of Sin structures in Li-IBs are 653.0–799.2 mAh/g. The Vcell and CTheory of Sin structures in this study are higher than Vcell and CTheory of graphite compounds, carbon nano structures and boron nitride nanotubes.
| Original language | English |
|---|---|
| Pages (from-to) | 10225-10235 |
| Number of pages | 11 |
| Journal | Silicon |
| Volume | 14 |
| Issue number | 16 |
| DOIs | |
| State | Published - Nov 2022 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Battery
- Cell voltage
- Electrode
- Nano
- Silicon
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