One-pot supercritical water synthesis of Bi2MoO6-RGO 2D heterostructure as anodes for Li-ion batteries

Two dimensional (2D) materials stacked with Van der waals bonding to obtain a heterostructure have always generated tailored physical and chemical properties. In this paper, the development and application of single-phase 2D Bi2MoO6-reduced graphene oxide (BMO-RGO) heterostructure by one-pot supercr...

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Bibliographic Details
Published in:	Ceramics international Vol. 47; no. 7; pp. 10274 - 10283
Main Authors:	Shetty, Manjunath, Schüßler, Christian, Shastri, Mahesh, Sabbanahalli, Chethan, Chitrabhanu, C.P., Murthy, M., Jagadeesh Babu, S., Tomai, Takaaki, Anantharaju, K.S., Shivaramu, Prasanna D., Rangappa, Dinesh
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-04-2021
Subjects:	Anodes Bi2MoO6 nanosheets Lithium-ion batteries RGO nanocomposite Supercritical water Lithium-ion batteries Bi2MoO6 nanosheets RGO nanocomposite Anodes Supercritical water
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Summary:	Two dimensional (2D) materials stacked with Van der waals bonding to obtain a heterostructure have always generated tailored physical and chemical properties. In this paper, the development and application of single-phase 2D Bi2MoO6-reduced graphene oxide (BMO-RGO) heterostructure by one-pot supercritical water (SCW) method is reported for the first time. The as-synthesized nanocomposite of BMO-RGO with single-phase orthorhombic crystal structure is confirmed by XRD. The 2D nanoflake morphology was observed under transmission electron microscopy (TEM). X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and Fourier transform infrared spectroscopy is performed to confirm the presence of BMO-RGO, RGO, and other functional groups, respectively. The specific capacities obtained through charge-discharge measurements from BMO and BMO-RGO heterostructure nanocomposites are compared and the optimization of RGO wt% is established. After 50 cycles, the capacity retention is around 202 mA h g−1 for BMO with 24 wt% RGO (BMO-24RGO) nanocomposite. This value is higher in comparison to pure BMO nanoflakes which have a capacity retention of 25 mA h g−1. These results show the influence of RGO content on the performance of electrochemical measurements when compared to pure BMO and BMO-24RGO electrodes. One-pot SCW synthesis is found to be a reliable method for the synthesis of BMO-RGO nanocomposite.
ISSN:	0272-8842 1873-3956
DOI:	10.1016/j.ceramint.2020.12.061