Metal organic framework derived iron oxides incorporated in thermochemically exfoliated graphene as high-performing anode of Li-ion batteries

Authors: Fu, H., Gao, B., Li, J., Qiao, Y., Wang, M., Feng, Z., Abdelkader, A. and Reza Kamali, A.

Journal: Separation and Purification Technology

Volume: 354

eISSN: 1873-3794

ISSN: 1383-5866

DOI: 10.1016/j.seppur.2024.128701

Abstract:

A straightforward and eco-friendly synthesis method is demonstrated for producing nanostructured iron oxide (NIO) and NIO modified with thermochemically exfoliated graphene (TEG), resulting in enhanced lithium-ion storage properties. The process involves solvothermal fabrication of a metal–organic framework (MOF), followed by mechanochemical-thermal modification with TEG, leading to the formation of nano-crosslinked TEG-modified NIO with enhanced oxygen vacancies, specific surface area, and porosity, thereby promoting lithium-ion storage performance. Specifically, the NIO-TEG nanocomposite exhibits a high specific reversible capacity of 975 mAh·g−1 with 96.3 % capacity retention after 200 cycles at 200 mA·g−1, surpassing NIO (without TEG) by 181 mAh·g−1. Moreover, after 400 cycles at 500 mA·g−1, the discharge capacity reaches 775.9 mAh·g−1 with a coulombic efficiency of 99.58 %. This study exhibits the potential scalability of NIO-TEG nanocomposites, which have interesting properties for diverse applications.

Source: Scopus