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Lithium‐Ion‐Transfer Kinetics of Single LiMn 2 O 4 Particles
Author(s) -
Zampardi Giorgia,
BatchelorMcAuley Christopher,
Kätelhön Enno,
Compton Richard G.
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201610485
Subject(s) - spinel , lithium (medication) , kinetics , electrolyte , particle (ecology) , materials science , ion , composite number , chemical engineering , aqueous solution , electrode , inorganic chemistry , chemistry , composite material , metallurgy , physics , medicine , oceanography , organic chemistry , quantum mechanics , geology , engineering , endocrinology
A stochastic investigation of lithium deinsertion from individual 200‐nm‐sized particles of LiMn 2 O 4 reveals the rate‐determining step at high overpotentials to be the transfer of the cation across the particle–electrolyte interface. Measurement of the (electro)chemical behavior of the spinel is undertaken without forming a conductive composite electrode. The kinetics of the interfacial ion transfer defines a theoretical upper limit for the discharge rates of batteries using LiMn 2 O 4 in an aqueous environment.