Researchers on the Northwestern Polytechnical College and Shaanxi Joint Lab of Graphene in China have synthesized onion-like nanospheres of carbon encapsulated few-layer MoS2 nanosheets to be used as an anode materials in Li-ion batteries.
The nanocomposite delivers a particular capability of 1119 mAh g−1 and exhibits glorious fee and biking efficiency. A paper on their work is printed within the Journal of Energy Sources.
The synthesis of the fabric relies on a easy polymerization and sulfidation/carbonation course of. Mo-containing polyoxometalate allows polymerization of polypyrrole accompanying with uniform encapsulation of Mo-nanoclusters.
The hybrid precursor confines the expansion of few-layer MoS2 nanosheets (≤5 layers) right into a N-doped carbon framework, which is of nice profit in enhancing conductivity and structural integrity.
Consequently, the nanospherical MoS2@C hybrid electrode manifests excessive Li-ion storage capability (1119 mAh g−1 at zero.1 A g−1), glorious fee functionality (616 mAh g−1 at 2 A g−1), and lengthy biking stability.
The substantial enchancment is rationalized by quick electrode kinetics and nice pseudocapacitive contribution.
The researchers counsel that their work might supply a robust engineering technique of MoS2@C nanomaterials for Li/Na-ion batteries and electrocatalysts.
Jian-Gan Wang, Huanyan Liu, Rui Zhou, Xingrui Liu, Bingqing Wei (2018) “Onion-like nanospheres organized by carbon encapsulated few-layer MoS2 nanosheets with enhanced lithium storage efficiency,” Journal of Energy Sources, Quantity 413, Pages 327-333 doi: 10.1016/j.jpowsour.2018.12.055