Abstract
NiMn2O4 (NMO) is a good alternative anode material for lithium-ion battery (LIB) application, due to its superior electrochemical activity. Current research shows that synthesis of NMO via citric acid-based combustion method envisaged application in the LIB, due to its good reversibility and rate performance. Phase purity and crystallinity of the material is controlled by calcination at different temperatures, and its structural properties are investigated by X-ray diffraction (XRD). Composition and oxidation state of NMO are further investigated by X-ray photoelectron spectroscopy (XPS). For LIB application, lithiation delithiation potential and phase transformation of NMO are studied by cyclic voltammetry curve. As an anode material, initially, the average discharge capacity delivered by NMO is 983 mA·h/g at 0.1 A/g. In addition, the NMO electrode delivers an average discharge capacity of 223 mA·h/g after cell cycled at various current densities up to 10 A/g. These results show the potential applications of NMO electrodes for LIBs.
Highlights
Li-ion battery (LIB) technology is widely used for energy storage application due to its long cycle life, high cell voltage, low self-discharge, high energy and power density, and relatively simple reaction mechanism [1]
2.3 V, but in the current research work, it was 2.03 V [27]. These results revealed that the synthesized material has higher energy density
NiMn2 O4 (NMO) nanomaterials are successfully synthesized via citric
Summary
Li-ion battery (LIB) technology is widely used for energy storage application due to its long cycle life, high cell voltage, low self-discharge, high energy and power density, and relatively simple reaction mechanism [1]. NiMn2 O4 (NMO) is one of the promising anode materials for LIBs owing to its higher conductivity and superior electrochemical activity compared to other metal oxides [9] It offers more redox-active sites due to the lattice position of both Mn and Ni [9,11]. It enhances cyclic stability and rate performance [9] It has more advantages such as abundant availability, low cost, non-toxic nature, and environmental friendliness [12]. Because of these considerations, spinel NMO is potential anode material for the generation of LIBs. Considering the significance of NMO and its properties, the solution combustion technique has proposed in the current research work. It leads to enhance specific capacity, cyclic stability, and coulombic efficiency [15]
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