In Situ Growth of a Feather‐like MnO₂ Nanostructure on Carbon Paper for High‐Performance Rechargeable Sodium‐Ion Batteries

Abstract

Recently, sodium‐ion batteries have attracted great attention, owing to the rich resource and low cost. In the present work, a feather‐like MnO2 nanostructure was prepared directly on carbon paper by using a rapid and simple hydrothermal route for the first time. The formation mechanism was proposed by investigating the intermediate products during the reaction. When applied as an anode for a sodium‐ion battery, the feather‐like MnO2 nanostructure on carbon paper exhibited a high discharge capacity, good rate reversibility, and long‐term cycling stability. A high specific capacity of approximately 300 mAh g−1 could be obtained even after cycling 400 times with a current density of 0.1 A g−1. Furthermore, the Na+ storage mechanism of MnO2 on carbon paper in the sodium‐ion battery was also investigated in this work. Such high performance can be attributed to the porous structure of the substrate and high specific surface area of the feather‐like nanostructure.

Transition Metal Oxide Anodes for Electrochemical Energy Storage in Lithium‐ and Sodium‐Ion Batteries*

“…This MnO@C hybrid exhibited a reversible capacity of 260 mAh g −1 after 100 cycles at a specific current of 50 mA g −1 . [99] Li et al [100] reported feather-like MnO 2 grown on carbon paper by a hydrothermal method and applied this composite as negative active material for SIBs, providing a rather high reversible capacity of 300 mAh g −1 after 400 cycles at 0.1 A g −1 . Peng and coworkers [101] synthesized ultrafine MnO nanoparticles, with a particle size of 4 nm, anchored on nitrogen-doped CNTs (NDCT@MnO) as anode active material for SIBs.…”

Challenges and perspectives for manganese‐based oxides for advanced aqueous zinc‐ion batteries

“…In these structures, the basic structural unit MnO 6 octahedra is connected to each other by co‐angle/co‐edge, constructing chain, tunnel, layered structures with enough space accommodating foreign cations . Given this structural advantage, MnO 2 has been extensively investigated as favorable cathodes for batteries in the past several years, including Li‐ion batteries, Na‐ion batteries, K‐ion batteries, Mg‐ion batteries, and latest ZIB . Theoretically, MnO 2 can accommodate one Zn 2+ insertion per formula with a high theoretical capacity of approximately 616 mAh/g, in which the Mn 4+ is reduced to Mn 2+ .…”

New insights into the outstanding performances of nickel‐doped manganese oxide nanoparticles embedded in a 3D carbon nanopipes framework as anode for lithium and sodium‐ion batteries

“…The present capacity of the Ni(5)-Mn 3 O 4 (1) @CMK-5 electrode in SIBs is greater or analogous to other manganese oxide-supported electrodes publicized previously. 18,27,[65][66][67] The comparison of capacity of the current electrode with other publicized manganese oxide based electrode materials for SIBs was made in Table S3 (SI). The excellent capacity of the Ni(5)-Mn 3 O 4 (1) @CMK-5 anode in SIBs can also be attributed to enhanced electronic conductivity of Mn 3 O 4 NPs due to Ni doping and smaller NP size that helps in solid state Na + ion diffusion.…”