Improving the Reaction Kinetics by Annealing MoS/PVP Nanoflowers for Sodium-Ion Storage

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2023 Apr 13

PMID 37049711

Authors

Yuan Li

Lingxing Zan

Jingbo Chen

Affiliations

Soon will be listed here.

Abstract

Under the ever-growing demand for electrochemical energy storage devices, developing anode materials with low cost and high performance is crucial. This study established a multiscale design of MoS/carbon composites with a hollow nanoflower structure (MoS/C NFs) for use in sodium-ion batteries as anode materials. The NF structure consists of several MoS nanosheets embedded with carbon layers, considerably increasing the interlayer distance. Compared with pristine MoS crystals, the carbon matrix and hollow-hierarchical structure of MoS/C exhibit higher electronic conductivity and optimized thermodynamic/kinetic potential for the migration of sodium ions. Hence, the synthesized MoS/C NFs exhibited an excellent capacity of 1300 mA h g after 50 cycles at a current density of 0.1 A g and 630 mA h g at 2 A g and high-capacity retention at large charge/discharge current density (80% after 600 cycles 2 A g). The suggested approach can be adopted to optimize layered materials by embedding layered carbon matrixes. Such optimized materials can be used as electrodes in sodium-ion batteries, among other electrochemical applications.

Citing Articles

MoS/SnS/CoS Heterostructures on Graphene: Lattice-Confinement Synthesis and Boosted Sodium Storage.

Zhang R, Dong Y, Su Y, Zhai W, Xu S Molecules. 2023; 28(16).

PMID: 37630224 PMC: 10458794. DOI: 10.3390/molecules28165972.

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