Accéder au contenu
MilliporeSigma

Investigation on the Electrochemical Performances of Mn2O3 as a Potential Anode for Na-Ion Batteries.

Scientific reports (2020-06-10)
Nor Fazila Mahamad Yusoff, Nurul Hayati Idris, Muhamad Faiz Md Din, Siti Rohana Majid, Noor Aniza Harun, Md Mokhlesur Rahman
RÉSUMÉ

Currently, the development of the sodium-ion (Na-ion) batteries as an alternative to lithium-ion batteries has been accelerated to meet the energy demands of large-scale power applications. The difficulty of obtaining suitable electrode materials capable of storing large amount of Na-ion arises from the large radius of Na-ion that restricts its reversible capacity. Herein, Mn2O3 powders are synthesised through the thermal conversion of MnCO3 and reported for the first time as an anode for Na-ion batteries. The phase, morphology and charge/discharge characteristics of Mn2O3 obtained are evaluated systematically. The cubic-like Mn2O3 with particle sizes approximately 1.0-1.5 µm coupled with the formation of Mn2O3 sub-units on its surface create a positive effect on the insertion/deinsertion of Na-ion. Mn2O3 delivers a first discharge capacity of 544 mAh g-1 and retains its capacity by 85% after 200 cycles at 100 mA g-1, demonstrating the excellent cyclability of the Mn2O3 electrode. Therefore, this study provides a significant contribution towards exploring the potential of Mn2O3 as a promising anode in the development of Na-ion batteries.

MATÉRIAUX
Référence du produit
Marque
Description du produit

General Purpose Viscosity Standard; UKAS ISO/IEC17025 and ISO 17034 certified, viscosity 1273 mPa.s (25 °C)