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Updated: Jun 23, 2026
Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
Direct hydrothermal synthesis of ternary Li-Mn-O oxide ion-sieves
Qin-Hui Zhang1, Shu-Ying Sun, Shao-Peng Li
1State Key Lab of Chemical Engineering, College of Chemical Engineering, East China University of Science and Technology, Shanghai, P. R. China. qhzhang@ecust.edu.cn
Abstract:
Spinel-type ternary LiMn(2)O(4) oxide precursor was synthesized by direct hydrothermal synthesis of Mn(NO(3))(2), LiOH, and H(2)O(2) at 383 K for 8 h, a better technique for controlling the nanocrystalline structure with well-defined pore size distribution and high surface area than the traditional solid state reaction method. The final low-dimensional MnO(2) nanorod ion-sieve with a lithium ion selective adsorption property was further prepared by an acid treatment process to completely extract lithium ions from the Li-Mn-O lattice. The effects of hydrothermal reaction conditions on the nanostructure, chemical stability, and ion-exchange property of the LiMn(2)O(4) precursor and MnO(2) ion-sieve were systematically examined via powder X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), selected-area electron diffraction (SAED), and lithium ion selective adsorption measurements. The results show that this new kind of low-dimensional MnO(2) nanorod can be used for lithium extraction from aqueous environments, including brine, seawater, and waste water.
