|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Materials for Energy Conversion and Storage
||Novel N-rGO Sandwiched Biphasic Sn-SnSb Alloy Nanocomposite for Use as High Performance Anode in Li-ion Battery
||Sambedan Jena, Arijit Mitra, S B Majumder, Siddhartha Das
|On-Site Speaker (Planned)
We report facile synthesis of a novel sandwich structured nanocomposite comprising of biphasic Sn-SnSb alloy (Sn 32 wt% and SnSb intermetallic 68 wt%) and nitrogen doped reduced graphene oxide (N-rGO), impregnated into electrodeposited microporous nickel foam current collector as a promising high-capacity anode for Li ion battery. The N-rGO nanosheets along with nickel foam provide effective electron and lithium diffusion pathways which result in exceptional improvement in the electrochemical characteristics of Sn-SnSb nanopowders and successfully act as stress buffer preventing both pulverization and delamination. This N-rGO sandwiched Sn-SnSb nanocomposite anode on nickel foam results in reversible first charge capacity of 790mAh/g and stable cycle retention with a capacity loss of 16% in the last 50 cycles @ 0.1A/g, while preserving its structural integrity as compared to its pristine Sn-SnSb alloy nanopowder counterpart.