Lithium-Ion-Transfer Kinetics of Single LiMn₂O₄ Particles

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• 作者：Dr. Giorgia Zampardi ; Dr. Christopher Batchelor-McAuley ; Dr. Enno K&auml ; telhö ; n and Prof. Dr. Richard G. Compton
• 刊名：Angewandte Chemie
• 出版年：2017
• 出版时间：January 9, 2017
• 年：2017
• 卷：129
• 期：2
• 页码：656-659
• 全文大小：456K
• ISSN：1521-3757

文摘

A stochastic investigation of lithium deinsertion from individual 200-nm-sized particles of LiMn₂O₄ 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 LiMn₂O₄ in an aqueous environment.