High Stability and Long Cycle Life of Rechargeable Sodium-Ion Battery Using Manganese Oxide Cathode: A Combined Density Functional Theory (DFT) and Experimental Study.

ABSTRACT: Sodium-ion batteries (SIBs) can develop cost-effective and safe energy storage technology for substantial energy storage demands. In this work, we have developed manganese oxide (α-MnO₂) nanorods for SIB applications. The crystal structure, which is crucial for high-performance energy storage, is examined systematically for the metal oxide cathode. The intercalation of sodium into the α-MnO₂ matrix was studied using the theoretical density functional theory (DFT) studies. The DFT studies predict Na ions' facile diffusion kinetics through the MnO₂ lattice with an attractively low diffusion barrier (0.21 eV). When employed as a cathode material for SIBs, MnO₂ showed a moderate capacity (109 mAh·g^-1 at C/20 current rate) and superior life

SUBMITTER: Pandit B 

PROVIDER: S-EPMC8023529 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature