Array of nanosheets render ultrafast and high-capacity Na-ion storage by tunable pseudocapacitance
By Dongliang Chao, C. Zhu, Peihua Yang, Xiaohu Xia, Jilei Liu, Jin Wang, Xiaofeng Fan, S. Savilov, Jianyi Lin, H. Fan and 1 more. Nature Communications, 2016
1,290 citations recorded by the source corpus.
Sodium-ion batteries are a potentially low-cost and safe alternative to the prevailing lithium-ion battery technology. However, it is a great challenge to achieve fast charging and high power density for most sodium-ion electrodes because of the sluggish sodiation kinetics. Here we demonstrate a high-capacity and high-rate sodium-ion anode based on ultrathin layered tin(II) sulfide nanostructures, in which a maximized extrinsic pseudocapacitance contribution is identified and verified by kinetics analysis. The graphene foam supported tin(II) sulfide nanoarray anode delivers a high reversible capacity of ∼1,100 mAh g−1 at 30 mA g−1 and ∼420 mAh g−1 at 30 A g−1, which even outperforms its lithium-ion storage performance. The surface-dominated redox reaction rendered by our tailored ultrathin tin(II) sulfide nanostructures may also work in other layered materials for high-performance sodium-ion storage. Sodium ion batteries are a promising alternative to lithium ion technology, however their sluggish sodiation kinetics currently hinder performance. Here the authors fabricate ultrathin layered tin(II) sulfide nanostructures displaying a pseudocapacitance contribution for high capacity sodium ion anodes.
Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/05f817e9e07d989715c947657605dae5bdea405a
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.