%0 Journal Article
%T Heterostructured Bi2S3每Bi2O3 Nanosheets with a Built-In Electric Field for Improved Sodium Storage
%J -
%D 2018
%R https://doi.org/10.1021/acsami.8b01613
%X Constructing novel heterostructures has great potential in tuning the physical/chemical properties of functional materials for electronics, catalysis, as well as energy conversion and storage. In this work, heterostructured Bi2S3每Bi2O3 nanosheets (BS每BO) have been prepared through an easy water-bath approach. The formation of such unique BS每BO heterostructures was achieved through a controllable thioacetamide-directed surfactant-assisted reaction process. Bi2O3 sheets and Bi2S3 sheets can be also prepared through simply modifying the synthetic recipe. When employed as the sodium-ion battery anode material, the resultant BS每BO displays a reversible capacity of ‵630 mA h g每1 at 100 mA g每1. In addition, the BS每BO demonstrates improved rate capability and enhanced cycle stability compared to its Bi2O3 sheets and Bi2S3 sheets counterparts. The improved electrochemical performance can be ascribed to the built-in electric field in the BS每BO heterostructure, which effectively facilitates the charge transport. This work would shed light on the construction of novel heterostructures for high-performance sodium-ion batteries and other energy-related devices
%U https://pubs.acs.org/doi/10.1021/acsami.8b01613