Comparative Study of the Cathode and Anode Performance of Li2MnSiO4 for Lithium-Ion Batteries. (10th January 2016)

• Record Type: Journal Article
• Authors: Liu, Shuang-Shuang; Song, Li-Jun; Yu, Bao-Jun; Wang, Cheng-Yang; Li, Ming-Wei
• Is Part Of: Electrochimica acta. Volume 188(2016)
• Page Start: 145
• Page End: 152
• Publication Date: 2016-01-10
• Subjects: Lithium manganese orthosilicate -- Anode material -- Cathode material -- Lithium-ion battery; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.11.144
• Languages: English
• ISSNs: 0013-4686

Abstract

Abstract: Carbon-coated Li2 MnSiO4 nanocrystallites are synthesized via a solid state reaction, and their cathode and anode performance is comparatively studied. The Li2 MnSiO4 cathode shows an initial charge/discharge capacity of 405/134 mAh g −1 at a current density of 16.6 mA g −1, and a low charge/discharge capacity of 93/66 mAh g −1 during the 20th cycle. Partial Li2 MnSiO4 cathode decomposes at 4.56 V ( vs Li + /Li) during the initial charge. Interestingly, the Li2 MnSiO4 anode exhibits a high initial discharge/charge capacity of 658/388 mAh g −1 at a current density of 20 mA g −1, and a discharge/charge capacity of 459/456 mAh g −1 during the 50th cycle. Li2 MnSiO4 anodes also have stable and good rate capabilities. The Li2 MnSiO4 crystallites as anode decompose during cycling, and their capacity increases simultaneously. It is proposed that Li2 MnSiO4 anode converts energy via a reversible conversion reaction.