High energy density layered-spinel hybrid cathodes for lithium ion rechargeable batteries

S. Basu*, P. P. Dahiya, Mainul Akhtar, S. K. Ray, Jeng-Kuei Chang, S. B. Majumder

*此作品的通信作者

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

High energy density Li2MnO3 (layered)–LiMn1.5Ni0.5O4 (spinel) composite cathodes have been synthesized using auto-combustion route. Rietveld refinements together with the analyses of high resolution transmission electron micrographs confirm the structural integration of Li2MnO3 nano-domains into the LiMn1.5Ni0.5O4 matrix of the composite cathodes. The discharge capacity of the composite cathodes are due to the intercalation of Li+ ion in the tetrahedral (8a) and octahedral (16c) sites of the spinel component and also the insertion of Li+ in the freshly prepared MnO2 lattice, formed after Li2O extraction from the Li2MnO3 domains. The capacity fading of the composite cathodes are explained to be due to the layered to spinel transition of the Li2MnO3 component and Li+ insertion into the octahedral site of the spinel lattices which trigger cubic to tetragonal phase transition resulting volume expansion which eventually retard the Li+ intercalation with cycling.

原文English
頁(從 - 到)148-156
頁數9
期刊Materials Science and Engineering B: Solid-State Materials for Advanced Technology
213
DOIs
出版狀態Published - 1 十一月 2016

指紋

深入研究「High energy density layered-spinel hybrid cathodes for lithium ion rechargeable batteries」主題。共同形成了獨特的指紋。

引用此