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Strategic Integration of Cobalt-Free Layered–Spinel Cathodes via Solution Combustion Method for High-Performance Lithium-Ion Batteries

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Structurally integrated cobalt-free layered-spinel cathode material with the composition Li 1.2 Ni 0.24 Mn 0.56 O 2 (LNMO) was synthesized via the sucrose-assisted solution combustion method (SCM). The material was calcined at 650, 750, 850, and 950 °C, denoted as LNMO-650, LNMO-750, LNMO-850, and LNMO-950. Among these, the sample calcined at 850 °C exhibited excellent electrochemical performance due to the optimal phase composition achieved at this temperature. The synthesized LNMO materials are composed of both Li-rich layered (space group C 2/ m ) and spinel phases (space group Fd 3̅ m ) as evidenced by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), and cyclic voltammetry ( CV ) analyses. LNMO-850 delivers a maximum specific capacity of 283 mAh g –1 with an energy density of 952 Wh kg –1 at 20 mA g –1 . At a higher current density of 200 mA g –1, it retains 138 mAh g –1 with 97% Coulombic efficiency and an energy density of 456.4 Wh kg –1 in the 100th cycle. In addition, the LNMO-850 exhibits superior performance over temperatures ranging from 0 to 50 °C. Postcycling studies, such as ex-situ XRD, Raman, and HRSEM analysis, were carried out to evaluate the material’s structural stability and morphological robustness after prolonged cycling.

Source: ACS Omega

DOI: 10.1021/acsomega.5c06884

Authors: Prasanthi Ramesh, Subramanian Nithiananth, Kalaivani Raman, Helen Annal Therese

Institutions: SRM Institute of Science and Technology, Chungnam National University, Vels University

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,935