In situ implanting MnO nanoparticles into carbon nanorod-assembled microspheres enables performance-enhanced room-temperature Na-S batteries

Publication Name

Inorganic Chemistry Frontiers

Abstract

The accomplishment of high-performance room-temperature sodium-sulfur (RT Na-S) batteries necessitates multifunctional sulfur electrodes via decent materials design strategies, since they are suffering from a series of critical challenges in S conversion chemistry. Herein, a functionalized S cathode is fabricated through in situ implanting polar MnO nanoparticles into carbon microspheres self-assembled by porous nanorods. The one-dimensional (1D) carbon nanorods can assist in fast electron transfer while nanochannels among the well-aligned nanorods act as pathways for Na ion diffusion. More significantly, the embedded ultrafine polar MnO nanoparticles function as good polysulfide adsorbents due to their strong chemical affinity and can promote conversion kinetics. As such, RT Na-S batteries with the as-designed S cathode achieve great cyclability of 234 mA h g−1 over 1000 cycles at 2 A g−1 and superior rate capability of 418 mA h g−1 at 2 A g−1

Open Access Status

This publication is not available as open access

Volume

9

Issue

21

First Page

5486

Last Page

5494

Funding Number

DP210102215

Funding Sponsor

Australian Research Council

Share

COinS
 

Link to publisher version (DOI)

http://dx.doi.org/10.1039/d2qi01362b