Issue 11, 2019

Construction of unique heterogeneous cobalt–manganese oxide porous microspheres for the assembly of long-cycle and high-rate lithium ion battery anodes

Abstract

Porous (Co, Mn)(Co, Mn)2O4-based microspheres (CM-11-Ms) and core–shell microspheres (CM-11-CSMs) were firstly synthesized via controlled pyrolysis of CoMn-precursor microspheres at different temperatures under nitrogen. During pyrolysis of the CoMn-precursor, the carbon derived from hexamethylenetetramine and polyethylene glycol transforms part of (Co, Mn)(Co, Mn)2O4 into MnO and Co3O4. As an anode for lithium ion batteries, CM-11-Ms exhibits a specific capacity of 745 mA h g−1 after 650 cycles at 1 A g−1, while CM-11-CSMs exhibits an enhanced lithium storage capacity of 2175.8 mA h g−1 even after 1000 cycles at 1 A g−1 without an evident capacity decay. The improved electrochemical properties could be attributed to the unique core–shell structure that accommodates the volume expansion during cycling, the high-rate lithiation-induced reactivation, and the synergy effects among (Co, Mn)(Co, Mn)2O4, Co3O4, and MnO.

Graphical abstract: Construction of unique heterogeneous cobalt–manganese oxide porous microspheres for the assembly of long-cycle and high-rate lithium ion battery anodes

Supplementary files

Article information

Article type
Paper
Submitted
16 Қыр. 2018
Accepted
07 Ақп. 2019
First published
08 Ақп. 2019

J. Mater. Chem. A, 2019,7, 6149-6160

Construction of unique heterogeneous cobalt–manganese oxide porous microspheres for the assembly of long-cycle and high-rate lithium ion battery anodes

B. Wu, Y. Xie, Y. Meng, C. Qian, Y. Chen, A. Yuan, X. Guo, H. Yang, S. Wan and S. Lin, J. Mater. Chem. A, 2019, 7, 6149 DOI: 10.1039/C8TA09028A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements