A stable Li-deficient oxide as high-performance cathode for advanced lithium-ion batteries. Issue 15 (22nd January 2015)

• Record Type: Journal Article
• Authors: Hou, Peiyu; Wang, Jie; Song, Jishun; Song, Dawei; Shi, Xixi; Wang, Xiaoqing; Zhang, Lianqi
• Is Part Of: Chemical communications. Volume 51:Issue 15(2015)
• Page Start: 3231
• Page End: 3234
• Publication Date: 2015-01-22
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c4cc09344e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : A stable Li-deficient Li0.35 Ni0.2 Co0.1 Mn0.7 O2− x surprisingly delivers large reversible capacity (251.3 mA h g −1 ), outstanding cycle life and a low median-voltage of 2.7 V in the range of 2.0–4.9 V. Abstract : Monodisperse Li-deficient Li0.35 Ni0.2 Co0.1 Mn0.7 O2− x spinel single crystals have been prepared for the first time. The Li-deficient oxide surprisingly delivers large reversible capacity (251.3 mA h g −1 ), outstanding cycle life and low median-voltage of 2.7 V in the range of 2.0–4.9 V. Importantly, high median-voltage (4.4 V) and superior rate capability are also obtained from 3.0 to 5.0 V. These results indicate that high-energy or high-power density can be achieved by controlling discharge cut-off voltage.