|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Advanced Materials for Energy Conversion and Storage
||Novel Three Dimensional Porous Sn-Sb-Ni Anode on Ni Foam: Electrodeposition Synthesis and Lithium Storage Performance
||Srijan Sengupta, Arghya Patra, Arijit Mitra, Mainul Akhtar, Karabi Das, Subhasish Basu Majumder, Siddhartha Das
|On-Site Speaker (Planned)
We report a novel, active-inactive type Tin-Antimony-Nickel alloy with flaky morphology electrodeposited on 3D interconnected microporous Nickel foam (~30 μm pore diameter) as a promising high-specific-capacity anode for Li ion batteries. The multiphase composition (SnSb and Ni<SUB>3</SUB>Sn<SUB>4</SUB> “reactant” intermetallics dispersed in Tin “matrix” with 43.52% Sn, 24.70% SnSb, 14.03% Ni<SUB>3</SUB>Sn<SUB>4</SUB> and 17.75% Ni) alleviates the volumetric stress generated during cycling by lithiating at different potentials (0.84V, 0.66V, 0.57V, 0.42V, 0.39V and .35-.25V). Nickel foam provides effective electron pathways and successfully acts as a stress buffer preventing delamination and pulverisation. These combinations of properties in Tin-Antimony-Nickel anode on Nickel foam results in a higher reversible capacity (834.38 mAh/g at 200 mA/g after the 2<SUP>nd</SUP> cycle and 70% capacity retention after 100 cycles), superior rate capability and stable cycle retention while preserving its structural integrity in comparison to a Tin-Antimony-Nickel anode on a planar nickel foil as a current collector.
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