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Onion-Structured Si Anode Constructed with Coating by $Li_{4}Ti_{5}O_{12}$ and Cyclized-Polyacrylonitrile for Lithium-Ion Batteries
| Content Provider | MDPI |
|---|---|
| Author | Nurpeissova, Arailym Mukanova, Aliya Kalimuldina, Gulnur Umirov, Nurzhan Kim, Sung-Soo Bakenov, Zhumabay |
| Copyright Year | 2020 |
| Description | Low dimensional Si-based materials are very promising anode candidates for the next-generation lithium-ion batteries. However, to satisfy the ever-increasing demand in more powerful energy storage devices, electrodes based on Si materials should display high-power accompanied with low volume change upon operation. Thus far, there were no reports on the Si-based materials which satisfy the stated requirements. Hence, here, we report on modified onion-structured Si nanoparticles (SiNPs) co-coated with Li4Ti5O12 (LTO) and cyclized polyacrylonitrile (cPAN) to bring the synergistic effect enhancing the conductivity, tolerance to volume change and stable performance. Obtained results suggest that the nanoparticles were conformally coated with both materials simultaneously and the thicknesses of the films were in a range of a few nanometers. Electrochemical tests show that the modified SiNPs deliver a high initial capacity of 2443 mAh g−1 and stable capacity retention over 50 cycles with 95% Coulombic efficiency. |
| Starting Page | 1995 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano10101995 |
| Journal | Nanomaterials |
| Issue Number | 10 |
| Volume Number | 10 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2020-10-10 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Electrochemistry Silicon Nanoparticles Lto Cpan Onion-like Structure Nanostructures Energy Storage |
| Content Type | Text |
| Resource Type | Article |
