Jump to main content
Jump to site search


Engineering Metal Sulfide with Hierarchical Interfaces towards Advanced Sodium-ions Storage

Abstract

Antimony sulfide as energy-storage material with remarkable theoretical capacity have captured numerous interests, whereas it was restricted by volume expansion, dissolution of polysulfide and sluggish kinetics. Utilizing oxygen-function groups of phenolic resin, engineering Sb2S3 with hierarchical interfaces (Sb, S-doped carbon) are obtained, effectively facilitating the diffusion of ions and accommodation of volume change. Importantly, double-controlling synergistic effects of Sb shell and S-doped carbon would prolong the diffusion pathway of polysulfide, strongly bringing about advanced sodium-ions storage capability. As a result, it delivers a capacity retention rate of 97.1% at 0.1 A g-1 after 200 cycles. At 0.5, 1.0, 2.0 A g-1 after 150 cycles, it still maintains capacity of 422.6, 367, 311.1 mAh g-1, respectively. The detailed exploration of capacity confirm that the introduced hierarchical interfaces significantly promoted the faster transfer of electrons and the trapping of poly-sulfide accompanied with improved reversible conversion reaction. The quantitative analyses of capacitive contribution and EIS reveal that core-shell structure and S-doped carbon would fundamentally enhance the pseudocapacitive behaviors and boosted the transferring of electrons/ions. This rational design is expected to brighten the prospects for designing metal-sulfides as advanced anodes of sodium-ion batteries.

Back to tab navigation

Supplementary files

Article information


Submitted
19 Dec 2019
Accepted
07 Feb 2020
First published
10 Feb 2020

J. Mater. Chem. A, 2020, Accepted Manuscript
Article type
Paper

Engineering Metal Sulfide with Hierarchical Interfaces towards Advanced Sodium-ions Storage

W. Zhao, L. Zhang, F. Jiang, X. Chang, Y. Yang, P. Ge, W. Sun and X. Ji, J. Mater. Chem. A, 2020, Accepted Manuscript , DOI: 10.1039/C9TA13899D

Social activity

Search articles by author

Spotlight

Advertisements