Work

Electrochemical performance of hydrothermally synthesized manganese dioxide as anode for lithium-ion batteries

Year: 2025

Type: article

Abstract: Three types of manganese dioxide with distinct morphologies were synthesized via a hydrothermal method. The phase composition, crystal structure, surface morphology, specific surface area, pore size parameters, oxygen vacancy content, and electrochemical properties of the samples were systematically characterized using X-ray diffraction (XRD), field-emission scanning electron microscopy (SEM), N₂ adsorption-desorption analysis, X-ray photoelectron spectroscopy (XPS), and electrochemical tests. The results revealed that the synthesized manganese dioxide samples belonged to the tetragonal α-MnO₂ phase but exhibited different morphologies, specific surface areas, and oxygen vacancy contents (urchin-like > needle-like > fiber-like). Electrochemical performance tests demonstrated that the urchin-like MnO₂ delivered a high reversible capacity (315 mAh g⁻¹ after 60 cycles at 100 mA g⁻¹), Coulombic efficiency (>99 %), superior rate capability, and excellent cycling stability. The enhanced electrochemical performance of urchin-like MnO₂ is attributed to its high oxygen vacancy content, which improves charge transfer kinetics and provides additional active sites for lithium-ion storage, making it a promising anode material for lithium-ion batteries.

Source: International Journal of Electrochemical Science

DOI: 10.1016/j.ijoes.2025.101003

Authors: Jintao Wang, Qiqi Zhang, Zhiyong Mao, Qilin Dai, Qingyan Cheng

Institutions: Hebei University of Technology, Jackson State 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: $1,670