About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Energy Materials for Sustainable Development
|
| Presentation Title |
A Composite Anode of Silicon Oxycarbide and Reduced Graphene Oxide for Lithium-Ion Batteries |
| Author(s) |
Dillip Kumar Panda, Nawraj Sapkota, Gangadhar Jella, Ravindran Sujith, Apparao Rao, Rajendra Bordia |
| On-Site Speaker (Planned) |
Dillip Kumar Panda |
| Abstract Scope |
Silicon oxycarbides (SiOCs) are promising anode materials for high-energy lithium-ion batteries due to their high theoretical capacity and structural stability during cycling. However, their low electronic conductivity has posed a significant obstacle to the overall battery performance, consequently hindering their practical application. To address this, we designed high-performance anodes by integrating silicon (Si-rich) oxycarbide with chemically modified reduced graphene oxide (rGO). Notably, the SiOC-rGO anodes exhibit a high reversible capacity of ~987 mAh/g at 0.1 C surpassing the capacity of SiOC at 690 mAh/g under the same current density. After 1000 cycles, composite anodes show an excellent long-term cycling stability and a capacity of more than 600 mAh/g at a 0.1C-rate due to improved electronic conductivity, reduced charge-transfer resistance, shortened ions diffusion lengths within the composite structure. Results will also be presented on cyclic capacity retention at higher C rates. |