Coaxial Manganese Dioxide@N-doped Carbon Nanotubes as Superior Anodes for Lithium Ion Batteries. (10th November 2015)

• Record Type: Journal Article
• Authors: Yue, Jie; Gu, Xin; Jiang, Xiaolei; Chen, Liang; Wang, Nana; Yang, Jian; Ma, Xiaojian
• Is Part Of: Electrochimica acta. Volume 182(2015)
• Page Start: 676
• Page End: 681
• Publication Date: 2015-11-10
• Subjects: lithium ion batteries -- N-doped carbon nanotubes -- manganese dioxide; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2015.09.150
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Highlights: MnO2 @N-dopedcarbonnanotube(N-CNT) composites are prepared by a facile process. MnO2 @N-CNT anodes exhibit better electrochemical properties than MnO2 @CNT. MnO2 @N-CNT anodes show a capacity of 1415 mAh g −1 at 100 mA g −1 after 150 cycles. Abstract: Carbon nanotube (CNT) has been widely applied to transition metal oxides anodes for lithium ion batteries, acting as a buffer, hollow backbone and conductive additive. Since the presence of N in carbon materials can enhance the reactivity and electrical conductivity, N-doped carbon nanotube (N-CNT) might be a better choice than pure CNT, which is exemplified by coaxial manganese dioxide@N-doped carbon nanotubes as a superior anode. The electrochemical properties of MnO2 @N-CNT are investigated in terms of cycling stability and rate capability. The nanocomposite can deliver a specific capacity of 1415 mAh g −1 after 100 cycles at the current density of 100 mA g −1, which is better than that of MnO2 @commercial CNT and MnO2 . The excellent performance might be related to the integration of hollow structure, one-dimensional nanoscale size as well as combination with N-doped carbon materials.