Microemulsion‐Assisted Synthesis of Nanosized LiMnO Spinel Cathodes for High‐Rate Lithium‐Ion Batteries. Issue 12 (27th October 2014)

• Record Type: Journal Article
• Authors: Rui, Xianhong; Sun, Wenping; Yan, Qingyu; Lim, Tuti Mariana; Skyllas–Kazacos, Maria
• Is Part Of: ChemPlusChem. Volume 79:Issue 12(2014:Dec.)
• Page Start: 1794
• Page End: 1798
• Publication Date: 2014-10-27
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201402267
• Languages: English
• ISSNs: 2192-6506

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Li_1.16Mn_1.84O₄ nanoparticles (50–90 nm) with cubic spinel structure are synthesized by combining a microemulsion process to produce ultrafine Mn(OH)₂ nanocrystals (3–8 nm) with a solid‐state lithiation step. The nanostructured lithium‐rich Li_1.16Mn_1.84O₄ shows stable cycling performance and superior rate capabilities as compared with the corresponding bulk material, for example, the nano‐sized Li_1.16Mn_1.84O₄ electrode shows stable reversible capacities of 74 mAh g⁻¹ during the 1000th cycle at a high rate of 40 C between 3.0 and 4.5 V. In addition, Li_1.16Mn_1.84O₄ nanoparticles also show high Li storage properties over an enlarged voltage window of 2.0–4.5 V with high capacities and stable cyclability, for example, delivering discharge capacities of 209 and 114 mAh g⁻¹ at rates of 1 and 20 C, respectively.</p> </abstract>