The effect of particle size and morphology on the rate capability of 4.7V LiMn1.5+δNi0.5−δO4 spinel lithium-ion battery cathodes

Autor:	M. Kunduraci, Glenn G. Amatucci
Rok vydání:	2008
Předmět:	General Chemical Engineering Inorganic chemistry Spinel Ionic bonding chemistry.chemical_element Quaternary compound engineering.material Electrochemistry Lithium-ion battery chemistry.chemical_compound Chemical engineering chemistry engineering Lithium Particle size Ethylene glycol
Zdroj:	Electrochimica Acta. 53:4193-4199
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2007.12.057
Popis:	The electrochemical impact of lithium-ion diffusivity on the discharge rate capabilities of cation ordered (P4332) and disordered (Fd3m) LiMn1.5+δNi0.5−δO4 spinels were studied. Potentiostatic Intermittent Titration (PITT) measurements revealed up to 2 orders-of-magnitude lower lithium diffusion coefficient for the ordered spinel polymorph. The optimum structure of the high voltage spinel is resolved with respect to these ionic studies and our previous electronic transport studies. Modification of the morphology and pore dimensions was accomplished through the tuning of the ethylene glycol used for the synthesis of nanostructured spinel in the modified Pechini process. Glycol will be shown to play a major role on the energy and power density of LiMn1.5+δNi0.5−δO4 electrodes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4388a5e8f5b5e692d27b7e153f0176a2 https://doi.org/10.1016/j.electacta.2007.12.057 Zobrazit plný text záznamu Full Text from ScienceDirect