High-performance LiNi0.5Mn1.5O4 spinel controlled by Mn3+ concentration and site disorder

Jie Xiao; Xilin Chen; Peter V Sushko; Maria L Sushko; Libor Kovarik; Jijun Feng; Zhiqun Deng; Jianming Zheng; Gordon L Graff; Zimin Nie; Daiwon Choi; Jun Liu; Ji-Guang Zhang; M Stanley Whittingham

doi:10.1002/adma.201104767

High-performance LiNi0.5Mn1.5O4 spinel controlled by Mn3+ concentration and site disorder

Adv Mater. 2012 Apr 24;24(16):2109-16. doi: 10.1002/adma.201104767. Epub 2012 Mar 19.

Authors

Jie Xiao¹, Xilin Chen, Peter V Sushko, Maria L Sushko, Libor Kovarik, Jijun Feng, Zhiqun Deng, Jianming Zheng, Gordon L Graff, Zimin Nie, Daiwon Choi, Jun Liu, Ji-Guang Zhang, M Stanley Whittingham

Affiliation

¹ Pacific Northwest National Laboratory, Richland, WA 99352, USA. Jie.Xiao@pnnl.gov

PMID: 22431364
DOI: 10.1002/adma.201104767

Abstract

The complex correlation between Mn(3+) ions and the disordered phase in the lattice structure of high voltage spinel, and its effect on the charge transport properties, are revealed through a combination of experimental study and computer simulations. Superior cycling stability is achieved in LiNi(0.45)Cr(0.05)Mn(1.5)O(4) with carefully controlled Mn(3+) concentration. At 250th cycle, capacity retention is 99.6% along with excellent rate capabilities.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Electric Power Supplies*
Electrochemistry
Electrodes
Manganese Compounds / chemistry*
Models, Molecular
Molecular Conformation
Nickel / chemistry*

Substances

Manganese Compounds
Nickel