Jump to main content
Jump to site search


Rational Design of Hierarchical FeSe2 Encapsulated with Bifunctional Carbon Cuboids as Advanced Anode for Sodium-ion Batteries

Abstract

Earth-abundant transition-metal selenides (TMSs) have aroused great interest for application in sodium-ion batteries (SIBs). Herein, we present Fe-based prussian blue analogs (PBA) modified by graphene oxide as precursors to synthesize FeSe2 nanoparticles within nitrogen-doped carbon (NC) matrix and graphene layer (FeSe2/NC@G). The bifunctional carbon wrapped FeSe2/NC@G shows excellent sodium-storage performance with a large reversible capacity of 331 mAh g-1 at 5.0 A g-1 and a high cyclability of 323 mAh g-1 at the current density of 2.0 A g-1 after 1000 cycles (82% capacity retention). Furthermore, full SIBs are also fabricated and demonstrate superior capacities and stabilities. The remarkable electrochemical properties are benefit from the formation of Fe-O-C chemical bond in the composite with enhanced electronic/ionic diffusion kinetics and structural integrity. This study paves the way for resultful synthesis of novel nanostructural TMSs in energy storage systems application.

Back to tab navigation

Supplementary files

Article information


Submitted
03 Sep 2020
Accepted
05 Oct 2020
First published
06 Oct 2020

Nanoscale, 2020, Accepted Manuscript
Article type
Paper

Rational Design of Hierarchical FeSe2 Encapsulated with Bifunctional Carbon Cuboids as Advanced Anode for Sodium-ion Batteries

S. Tao, S. Jiang, M. Xiang, J. Zhang, S. Chu, A. Marcelli, W. Chu, D. Wu, B. Qian and L. Song, Nanoscale, 2020, Accepted Manuscript , DOI: 10.1039/D0NR06359B

Social activity

Search articles by author

Spotlight

Advertisements