Validation of Na2MnSnO4/Graphene Anode for Potential Lithium‐Ion Battery Applications

• Published in: ChemElectroChem Vol. 8; no. 21; pp. 4054 - 4061
• Main Authors: Suresh babu, G. N., Kalaiselvi, N.
• Format: Journal Article
• Language: English
• Published: Weinheim John Wiley & Sons, Inc 02.11.2021
• Subjects: alloying; Anodes; conversion anode; Electrochemical analysis; Graphene; Lithium; Lithium-ion batteries; lithium-ion battery; Na2MnSnO4 graphene composite; Physiochemistry; Rechargeable batteries; Tin dioxide; urea assisted combustion
• ISSN: 2196-0216; 2196-0216
• DOI: 10.1002/celc.202100969

A novel class of Na2MnSnO4/G graphene composite existing as a hybrid containing SnO2 and NaMnO2 has been synthesized via urea assisted combustion (UAC) method at 900 °C and examined for its suitability in lithium‐ion battery assembly. This work shows the presence of uniform distribution of Na2MnSnO4 (NMS) particles interweaved within graphene layer which in turn enhances the electronic conductivity to realize appreciable electrochemical performance in lithium ion battery application. Na2MnSnO4/G (NMS/G) anode exhibits a capacity of 630 mA h g−1 for 100 cycles at 100 mA g−1 current density and under the high current of 0.5 A g−1, it exhibits as high as 426 mAh g−1 even after 2000 cycles. The title anode assumes importance as promising lithium ion battery anode, wherein the volume expansion and related issues of Sn have been addressed through the selection of custom designed electrode formulation and the preparation of Na2MnSnO4/G (NMS/G) composite with the desired physiochemical properties. Effect of engineered electrodes in alleviating the volume expansion related issues is elaborated in this communication. Na2MnSnO4 graphene (NMS/G) composite is synthesized via urea assisted combustion method at 900 °C. When used as an anode in lithium‐ion battery the NMS/G composite exhibits a capacity of 630 mA h g−1 for 100 cycles at 100 mA g−1 current density. Under high current of 0.5 A g−1, it exhibits a capacity 426 mAh g−1 even after 2000 cycles.