Related Experiment Video
Updated: Dec 26, 2025
08:00
Chemical Synthesis of Porous Barium Titanate Thin Film and Thermal Stabilization of Ferroelectric Phase by Porosity-Induced Strain
Published on: March 27, 2018
11.5K
Boosting Sodium Storage in Two-Dimensional Phosphorene/Ti3C2T MXene Nanoarchitectures with Stable Fluorinated
Xin Guo1, Wenxue Zhang2, Jinqiang Zhang1
1Centre for Clean Energy Technology, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, New South Wales 2007, Australia.
ACS Nano
|March 10, 2020
Summary
Researchers developed a novel phosphorene/MXene hybrid anode for improved sodium-ion batteries. This new material offers enhanced capacity, faster charging, and a longer lifespan by stabilizing the electrode structure and improving ion transport.
Area of Science:
- Materials Science
- Electrochemistry
- Nanotechnology
Background:
- Two-dimensional (2D) materials and heterostructures are promising for advanced energy storage devices.
- Challenges remain in developing 2D heterostructures for energy storage, including low Coulombic efficiencies and underdeveloped architectures.
- Stable and efficient sodium storage requires optimized electrode materials and interfaces.
Purpose of the Study:
- To develop a novel phosphorene/MXene hybrid anode for stable and fast sodium storage.
- To investigate the structural and electrochemical properties of the phosphorene/MXene heterostructure for battery applications.
- To address limitations in current 2D heterostructures for energy storage.
Main Methods:
- Fabrication of a phosphorene/MXene hybrid anode with an *in situ* formed fluorinated interphase.
- Characterization using X-ray photoelectron spectroscopy (XPS) for in-depth surface analysis.
- Electrochemical testing to evaluate capacity, cycling performance, and rate capability.
- Density functional theory (DFT) calculations to understand sodium ion affinities and diffusion kinetics.
Main Results:
- The phosphorene/MXene hybrid anode demonstrated facilitated electron and sodium cation migration.
- An *in situ* formed fluorinated interphase stabilized the solid electrolyte interphase (SEI) through fluorine-rich compounds.
- DFT calculations confirmed enhanced sodium affinities and diffusion kinetics in the phosphorene/MXene heterostructure, especially phosphorene/Ti3C2F2.
- The hybrid electrode achieved a high reversible capacity (535 mAh g-1 at 0.1 A g-1) and excellent cycling stability (343 mAh g-1 after 1000 cycles at 1 A g-1 with 87% retention).
Conclusions:
- The phosphorene/MXene hybrid anode offers a promising solution for stable and fast sodium storage.
- The *in situ* fluorinated interphase plays a crucial role in enhancing electrochemical performance and cycling stability.
- This work advances the development of 2D heterostructures for high-performance sodium-ion batteries.
