青岛科技大学主页平台管理系统 chenkezheng--Home-- Multi-shelled porous LiNi0.5Mn1.5O4 microspheres as a 5 V cathode material for lithium-ion batteries

陈克正

Professor

Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

Team member

Paper Publications

Current position: Home > Scientific Research > Paper Publications

Multi-shelled porous LiNi0.5Mn1.5O4 microspheres as a 5 V cathode material for lithium-ion batteries

Release time:2021-03-15 Hits:

Key Words:Oxides; Precipitation; Nanostructures; Electrochemical properties

Abstract:Multi-shelled porous LiNi0.5Mn1.5O4 microspheres have been successfully synthesized by a co-precipitation approach combined with high-temperature calcinations. The compositions and structures of multi-shelled LiNi0.5Mn1.5O4 microspheres have been investigated by a variety of characterization methods. The LiNi0.5Mn1.5O4 microspheres are composed of a lot of concentric circular porous shells with constant O, Mn, and Ni concentration, which is ascribed to the fast outward diffusion of Mn and Ni atoms and the slow inward diffusion of O and Li atoms during the calcination process. Electrochemical measurements show that LiNi0.5Mn1.5O4 microspheres deliver good cycling stability and rate capability with discharge capacities of 137.1 (0.1 C), 133.9 (0.2 C), 124.2 (0.5 C), 114.9 (1 C), and 96.0 mAh g(-1) (2 C). The LiNi0.5Mn1.5O4 microspheres synthesized by the facile method may be a promising cathode candidate for high energy density lithium-ion batteries. (C) 2013 Elsevier B.V. All rights reserved.

Volume:143

Issue:2

Translation or Not:no

Pre One:Synthesis of magnetite-silica core-shell nanoparticles via direct silicon oxidation

Next One:Preparation and characterization of ZnS:Tb,Gd and ZnS:Er,Yb,Gd nanoparticles for bimodal magnetic-fluorescent imaging